BLACKROCK CALIFORNIA INSURED MUNICIPAL 2008 TERM TRUST INC
N-30D, 2000-08-30
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--------------------------------------------------------------------------------
         THE BLACKROCK CALIFORNIA INSURED MUNICIPAL 2008 TERM TRUST INC.
                       SEMI-ANNUAL REPORT TO SHAREHOLDERS
                          REPORT OF INVESTMENT ADVISOR
--------------------------------------------------------------------------------


                                                                   July 31, 2000

Dear Shareholder:

      In the first half of the year, fears of an open-ended tightening policy by
the Federal Reserve peaked in May, which resulted in a subsequent  relief in the
market  as the U.S.  economy  seemed to  decelerate  significantly.  During  the
period, the Federal Reserve tightened short-term rates by 1.00% in an attempt to
engineer a "soft landing" for the U.S.  economy.  In the first six months of the
new millennium we have witnessed  unprecedented  volatility in both the Treasury
yield curve and the spread sectors.  The Treasury curve inverted  sharply in the
first quarter,  but as weak economic data emerged in the second quarter,  market
participants  embraced an economic  "soft  landing"  scenario  causing the yield
curve to steepen.  The downward revision in growth  expectations  allowed spread
sectors to rally in the month of June, but year-to-date  their performance still
trails Treasuries.

      While  fears  of a  hawkish  Federal  Reserve  and  consequent  risks of a
"hard-landing"  may not  materialize  immediately,  the risks are skewed in that
direction.  A longer period of subdued financial market performance is necessary
to  enable  the  labor  markets  to  build  up  slack,  which  is  an  important
pre-condition for the Fed to achieve its goal.

      This report contains a summary of market conditions during the semi-annual
period and a review of portfolio  strategy by your Trust's  managers in addition
to the  Trust's  unaudited  financial  statements  and a  detailed  list  of the
portfolio's  holdings.  Continued  thanks for your  confidence in BlackRock.  We
appreciate the opportunity to help you achieve your long-term investment goals.

Sincerely,


/s/ Laurence D. Fink                      /s/ Ralph L. Schlosstein

Laurence D. Fink                          Ralph L. Schlosstein
Chairman                                  President

                                       1
<PAGE>


                                                                   July 31, 2000


Dear Shareholder:

      We are  pleased  to  present  the  unaudited  semi-annual  report  for The
BlackRock  California  Insured  Municipal 2008 Term Trust Inc. ("the Trust") for
the six months ended June 30, 2000.  We would like to take this  opportunity  to
review the Trust's stock price and net asset value (NAV) performance,  summarize
developments in the fixed income markets and discuss recent portfolio management
activity.

      The Trust is a  non-diversified  closed-end  bond fund  whose  shares  are
traded on the New York  Stock  Exchange  under the  symbol  "BFC."  The  Trust's
investment  objective is to manage a portfolio of municipal debt securities that
will  return  $15 per share  (an  amount  equal to the  Trust's  initial  public
offering price) to investors on or about December 31, 2008, while providing high
current income exempt from regular federal and California  income tax. The Trust
seeks to achieve this  objective by investing in high credit  quality  ("AAA" or
insured to "AAA")  California  tax-exempt  general  obligation and revenue bonds
issued by city, county and state municipalities.

      The table below  summarizes the changes in the Trust's stock price and NAV
over the past six months:

                           -----------------------------------------------------
                             6/30/00   12/31/99    CHANGE      HIGH        LOW
--------------------------------------------------------------------------------
  STOCK PRICE               $14.50      $13.875     4.50%    $14.625    $13.8125
--------------------------------------------------------------------------------
  NET ASSET VALUE (NAV)     $16.29      $16.11      1.12%    $16.30     $15.80
--------------------------------------------------------------------------------

THE FIXED INCOME MARKETS

     The dynamic  expansion of the U.S. economy  continues  undaunted by Federal
Reserve Chairman Greenspan's attempt to brake the economy,  short of stalling it
into a recession. The labor markets remain tight, growth remains strong with 5%+
annualized  growth  rates  and  inflation  pressures  continue  to be  offset by
increased  productivity.  However,  the Fed remains cautious,  in their February
minutes it was noted that: "Other members  acknowledged that the Committee might
need to move more aggressively at a later meeting should imbalances  continue to
build and  inflation  expectations  clearly  begin to pick  up." At the  Federal
Reserve meeting in November, February and March the Fed raised the discount rate
by 0.25%  at each  meeting  and a 0.50%  increase  was made in May to bring  the
current discount rate to 6.50%.

     The Treasury Yield curve  experienced a complex set of dynamics,  which has
inverted  the curve and may  continue  to invert  the curve for the  foreseeable
future.  The yields on the short-end of the curve  increased  sharply during the
period in response to three Federal  Reserve  increases to the discount rate and
perceived future Fed actions in the coming months.  The long-end of the curve is
reacting to the  "official"  announcement  that the  Treasury  will buy back $30
billion  of  Treasuries  with  maturities  ranging  from 10 to 30 years.  With a
decreasing supply of available  Treasuries,  a balanced budget, and an unchanged
demand for longer  maturity  Treasuries,  we would  anticipate this condition to
continue.  This condition is further augmented by Treasury auction activity,  as
they reduce the  available  bonds on the long end of the curve they  continue to
add supply in the 1-10 year range through periodic auctions. For the semi-annual
period,  the yield of the  10-year  Treasury  security  declined  from  6.44% on
December 31, 1999 to 6.03% on June 30, 2000.

     Municipal bonds  outperformed  the taxable  domestic bond market during the
past six months,  returning  4.49% (as measured by the LEHMAN  MUNICIPAL  INDEX)
versus the LEHMAN AGGREGATE INDEX'S 3.98% on a pre-tax basis. Overall, the tone

                                       2
<PAGE>


in the  market  during  the  period  was  extremely  positive  as the  result of
continued strong demand from individual/retail investors coupled with a slowdown
in new issuance.  During 1999, households increased their holdings of individual
municipal  bonds  by over $40  billion  while  mutual  funds  saw net  outflows.
Offsetting the large amount of mutual fund outflows  during the first quarter of
2000 was a 22% decline in overall new  municipal  bond issuance YTD for the same
time period,  led by a 68% drop in refunding  volume.  Refunding volume was down
due to the relatively higher interest rates experienced during the first half of
2000 when  compared  to the first  half of 1999,  while new money  issuance  has
declined   because  the  strong   economy  has  led  to  full  coffers  at  most
municipalities.

     California's  dynamic economic expansion  continues.  In the second half of
1999 non-farm payroll grew 4% significantly  exceeding the national rate (2.1%).
This expansion is projected to continue at a 3.5% annual rate in 2000. The State
accounts for  approximately  40% of the  nation's  non-farm  employment  growth.
Unemployment  dropped to 4.6% in February  2000,  the state's  lowest rate since
February  1959,  and only 0.5%  above the  national  level.  Trade  values  from
California's  customs districts continue to expand with both exports and imports
growing at the Ports of Los Angeles, San Francisco and San Diego.

     The State's year-to-date  revenues are $2.5 billion over projections.  This
is primarily  attributed to the increase in personal income tax receipts,  which
may be a reflection of employees  exercising  their stock options.  Furthermore,
sales tax receipts  continue to show steady growth with an 8.2% increase in 1999
and projections for a 7.1% increase in 2000. The State's fiscal 2000 budget uses
conservative  assumptions,   which  provides  some  flexibility.   The  improved
liquidity   position  should  enable  California  to  weather  potential  future
volatility in its economically sensitive revenue stream.

THE TRUST'S PORTFOLIO AND INVESTMENT STRATEGY

     The Trust's portfolio is actively managed to diversify  exposure to various
sectors,  issuers,  revenue sources and security types.  BlackRock's  investment
strategy  emphasizes  a  relative  value  approach,  which  allows  the Trust to
capitalize upon changing  market  conditions by rotating  municipal  sectors and
coupons.  Additionally,  the Trust  emphasizes  securities  whose maturity dates
match the termination date of the Trust.

     Over the period,  trading activity in the Trust remained relatively low, as
many of the  securities  in the Trust's  portfolio  continued to trade at prices
above current cost.  As trading  activity that results in the Trust  realizing a
capital gain could require a taxable  distribution,  we continue to believe that
waiting to restructure  the portfolio in a higher  interest rate  environment is
the most prudent portfolio management strategy.  We added to the County/City and
State General Obligations and Utility sectors. At present, we are confident that
the  Trust is on  schedule  to  achieve  its  primary  investment  objective  of
returning $15 per share upon  termination  and will continue to seek  investment
opportunities in the municipal market.

     During the period the Trust  issued  $26,550,000  in  additional  preferred
shares.  The Trust  employs  leverage  to  enhance  its income by  borrowing  at
short-term  municipal rates and investing the proceeds in longer maturity issues
that have higher yields.  The degree to which the Trust can benefit from its use
of leverage  may affect its ability to pay high monthly  income.  As of June 30,
2000, the Trust's leverage amount was 38% of total assets.

                                       3
<PAGE>


     The  following  chart  compares  the Trust's  current and December 31, 1999
asset composition:

--------------------------------------------------------------------------------
         THE BLACKROCK CALIFORNIA INSURED MUNICIPAL 2008 TERM TRUST INC.
--------------------------------------------------------------------------------
   SECTOR                                JUNE 30, 2000     DECEMBER 31, 1999
--------------------------------------------------------------------------------
   Lease Revenue & Certificates
     of Participation                         23%                 26%
--------------------------------------------------------------------------------
   Water & Sewer                              18%                 20%
--------------------------------------------------------------------------------
   County, City & State                       17%                 12%
--------------------------------------------------------------------------------
   Transportation                             15%                 20%
--------------------------------------------------------------------------------
   Utility/Power                              10%                  6%
--------------------------------------------------------------------------------
   Special District                            7%                  7%
--------------------------------------------------------------------------------
   Hospital                                    4%                  5%
--------------------------------------------------------------------------------
   Tax Revenue                                 4%                  2%
--------------------------------------------------------------------------------
   Education                                   2%                  2%
--------------------------------------------------------------------------------

     We look  forward to managing  the Trust to benefit  from the  opportunities
available in the fixed income markets and to meet its investment objectives.  We
thank you for your investment in the BlackRock California Insured Municipal 2008
Term  Trust  Inc.  Please  feel free to contact  our  marketing  center at (800)
227-7BFM (7236) if you have specific  questions which were not addressed in this
report.

Sincerely,


/s/ Robert S. Kapito                     /s/ Kevin M. Klingert

Robert S. Kapito                         Kevin M. Klingert
Vice Chairman and Portfolio Manager      Managing Director and Portfolio Manager
BlackRock Advisors, Inc.                 BlackRock Advisors, Inc.


--------------------------------------------------------------------------------
         THE BLACKROCK CALIFORNIA INSURED MUNICIPAL 2008 TERM TRUST INC.
--------------------------------------------------------------------------------
   Symbol on New York Stock Exchange:                               BFC
--------------------------------------------------------------------------------
   Initial Offering Date:                                   September 18, 1992
--------------------------------------------------------------------------------
   Closing Stock Price as of 6/30/00:                             $14.50
--------------------------------------------------------------------------------
   Net Asset Value as of 6/30/00:                                 $16.29
--------------------------------------------------------------------------------
   Yield on Closing Stock Price as of 6/30/00 ($14.50)(1):          5.33%
--------------------------------------------------------------------------------
   Current Monthly Distribution per Common Share(2):              $0.064375
--------------------------------------------------------------------------------
   Current Annualized Distribution per Common Share(2):           $0.7725
--------------------------------------------------------------------------------

----------

(1)  Yield on  Closing  Stock  Price  is  calculated  by  dividing  the  current
     annualized distribution per share by the closing stock price per share.

(2)  Distribution is not constant and is subject to change.

                                       4
<PAGE>


--------------------------------------------------------------------------------
THE BLACKROCK CALIFORNIA INSURED MUNICIPAL 2008 TERM TRUST INC.
PORTFOLIO OF INVESTMENTS JUNE 30, 2000 (UNAUDITED)
--------------------------------------------------------------------------------

<TABLE>
<CAPTION>
-----------------------------------------------------------------------------------------------------------------------------------
           PRINCIPAL
            AMOUNT                                                                                   OPTION CALL            VALUE
 RATING*     (000)                                 DESCRIPTION                                       PROVISIONS+          (NOTE 1)
-----------------------------------------------------------------------------------------------------------------------------------
<S>        <C>          <C>                                                                          <C>                <C>
                        LONG-TERM INVESTMENTS--159.5%
                        CALIFORNIA--149.6%
                        California Hlth. Fac. Fin. Auth. Rev.,
   AAA     $ 6,850        Marin Gen. Hosp., Ser. A, 5.75%, 8/01/09, FSA ......................         8/03 @ 102       $  7,124,685
   AAA       2,000        Sutter Hlth. Care Sys., 5.70%, 8/15/09, MBIA .......................         8/06 @ 102          2,114,360
                        California St., G.O.,
   AAA       3,000        5.50%, 4/01/09, MBIA ...............................................        No Opt. Call         3,168,570
   AAA       3,000        5.50%, 2/01/10, MBIA ...............................................        No Opt. Call         3,169,920
   AAA       2,000        6.25%, 9/01/08, FGIC ...............................................        No Opt. Call         2,211,000
   AAA      15,000        6.30%, 9/01/08, MBIA ...............................................        No Opt. Call        16,632,900
                        California St. Pub. Wks. Brd.,
   AAA       2,100        Energy Efficiency, Ser. A, 5.625%, 10/01/08, AMBAC .................        10/05 @ 102          2,223,123
   AAA      10,255++      Lease Rev., 6.40%, 9/01/01, MBIA ...................................            N/A             10,696,375
   AAA       9,165      California St. Wide Cmnty. Dev. Auth., Lease Rev.,
                          6.00%, 10/01/10, AMBAC .............................................        10/02 @ 102          9,609,502
   AAA       2,600      Castaic Lake Wtr. Agcy. C.O.P., Wtr. Sys. Impvt. Proj., Ser. A,
                          7.25%, 8/01/10, MBIA ...............................................        No Opt. Call         3,084,536
   AAA       5,515++    Central Coast Wtr. Auth. Rev., St. Wtr. Proj. Reg. Fac.,
                          6.40%, 10/01/02, AMBAC .............................................            N/A              5,861,673
   AAA       5,500      Clovis Unified Sch. Dist., Ser. B, Zero Coupon, 8/01/08, FGIC ........            ETM              3,715,580
   AAA      13,740      East Bay Mun. Utils. Dist., Wtr. Sys. Rev., 6.00%, 6/01/09, AMBAC ....         6/02 @ 102         14,350,743
   AAA       4,025      Elsinore Valley Mun. Wtr. Dist., C.O.P., Ser. A, 6.00%,
                          7/01/09, FGIC ......................................................        No Opt. Call         4,393,730
                        Los Angeles Cnty. Asset Leasing Corp. Rev., AMBAC,
   AAA       2,910        5.95%, 12/01/07 ....................................................        No Opt. Call         3,161,744
   AAA       8,090        6.00%, 12/01/08 ....................................................        No Opt. Call         8,808,473
   AAA       8,600        6.05%, 12/01/09 ....................................................        No Opt. Call         9,415,108
   AAA       1,000      Los Angeles Elec. Rev., 5.75%, 9/01/12, FGIC .........................         9/03 @ 102          1,040,670
   AAA       5,765++    Los Angeles Wastewtr. Sys. Rev., Ser. B, 6.25%, 6/01/02, AMBAC .......            N/A              6,076,483
   AAA       3,075++    Marysville Hosp. Rev., Fremont-Rideout Hlth. Group, Ser. A,
                          6.20%, 1/01/03, AMBAC ..............................................            N/A              3,265,927
   AAA       8,000++    Modesto Irrig. Dist. Fin. Rev., Domestic Wtr. Proj., Ser. A,
                          6.00%, 9/01/02, AMBAC ..............................................            N/A              8,425,680
                        Northern California Pwr. Agcy., Multiple Cap. Fac. Rev., Ser. A, MBIA,
   AAA         430++      6.40%, 8/01/02 .....................................................            N/A                455,731
   AAA         570        6.40%, 8/01/07 .....................................................         8/02 @ 102            602,712
   AAA       1,280++      6.50%, 8/01/02 .....................................................            N/A              1,359,104
   AAA       1,725        6.50%, 8/01/08 .....................................................         8/02 @ 102          1,827,724
   AAA       1,000      Orange Cnty. Local Trans. Auth. Sales Tax Rev.,
                          6.00%, 2/15/09, MBIA ...............................................        No Opt. Call         1,088,380
   AAA       5,600      Pittsburg Redev. Agcy. Tax Alloc. Rev., Los Medanos Cmnty. Dev. Proj.,
                          5.50%, 8/01/07, FGIC ...............................................         8/02 @ 102          5,801,040
   AAA       3,075++    Riverside Cnty., Trans. Comm. Sales Tax Rev., Ser. A,
                          6.50%, 6/01/01, MBIA ...............................................            N/A              3,196,094
                        Sacramento Mun. Utils. Dist., Elec. Rev., Ser. C,
   AAA         825        5.75%, 11/15/07, MBIA ..............................................            ETM                891,083
   AAA       1,675        5.75%, 11/15/07, MBIA ..............................................        11/02 @ 102          1,754,496
   AAA       3,750        5.75%, 11/15/08, FGIC ..............................................            ETM              3,880,837
   AAA       2,500        5.75%, 11/15/08, FGIC ..............................................        11/02 @ 102          2,610,025
   AAA       3,950        5.75%, 11/15/09, MBIA ..............................................            ETM              4,237,362
   AAA         750        5.75%, 11/15/09, MBIA ..............................................        11/02 @ 102            781,635
   AAA       5,700      San Bernardino Cnty. C.O.P., Arpt. Impvt., 6.00%, 7/01/07, MBIA ......         7/02 @ 102          5,979,471
   AAA       5,000      San Bernardino Cnty. Trans. Auth., Sales Tax Rev.,
                          6.00%, 3/01/10, FGIC ...............................................            ETM              5,207,500
   AAA      11,000      San Diego Cnty. C.O.P., 5.625%, 9/01/12, AMBAC .......................        No Opt. Call        11,506,770
                        San Diego Cnty. Regl. Trans. Cmnty. Sales Tax Rev., Ser. A,
   AAA       2,500        6.00%, 4/01/08, FGIC ...............................................            ETM              2,576,150
   AAA       7,830        6.00%, 4/01/08, MBIA ...............................................            ETM              8,068,502
   AAA       7,650      San Diego Redev. Agcy. Rev., Tax Allocation-Centre City Proj.,
                          6.00%, 9/01/08, AMBAC ..............................................         9/02 @ 102          8,026,304
</TABLE>

                       See Notes to Financial Statements.

                                       5
<PAGE>


<TABLE>
<CAPTION>
-----------------------------------------------------------------------------------------------------------------------------------
           PRINCIPAL
            AMOUNT                                                                                   OPTION CALL            VALUE
 RATING*     (000)                                 DESCRIPTION                                       PROVISIONS+          (NOTE 1)
-----------------------------------------------------------------------------------------------------------------------------------
<S>        <C>          <C>                                                                          <C>               <C>
                        San Jose Arpt. Rev., MBIA,
   AAA     $ 8,010        6.00%, 3/01/09 .....................................................         3/03 @ 102      $  8,428,443
   AAA       3,000        6.00%, 3/01/10 .....................................................         3/03 @ 102         3,160,590
   AAA       3,755        6.10%, 3/01/07 .....................................................         3/03 @ 102         3,982,778
   AAA       2,865++    Santa Clara Cnty. Fin. Auth., Fac. Replacement Proj. A,
                          6.50%, 11/15/04, AMBAC .............................................            N/A             3,155,654
   AAA       2,820        Santa Rosa Wtr. Rev., Ser. B, 6.20%, 9/01/09, FGIC .................        9/02 @ 101.5        2,952,596
   AAA       5,000      So. California Rapid Trans. Dist., C.O.P.,Workers Comp. Fund,
                          6.00%, 7/01/10, MBIA ...............................................        1/01 @ 102.5        5,159,150
                        So. California Rapid Trans. Dist. Rev., Spec. Benefit Assmt.
                          Dist. A1, AMBAC,
   AAA       5,750        5.50%, 9/01/09 .....................................................         9/02 @ 100         5,836,882
   AAA       5,500        6.00%, 9/01/08 .....................................................         9/02 @ 102         5,770,545
   AAA       8,500      Sonoma Cnty. C.O.P., Cap. Rites-Detention Fac.,
                          6.00%, 11/15/10, AMBAC .............................................        11/02 @ 102         8,925,000
   AAA       2,000      Univ. of California Rev., Multi-Purpose Projs.,
                          Ser. F-1989, 5.00%, 9/01/11, FGIC ..................................         9/06 @ 101         2,014,700
   AAA       3,460++    West and Central Basin Fin. Auth. Rev., 6.125%, 8/01/02, AMBAC .......            N/A             3,648,397
   AAA       2,160      West Sacramento Fin. Auth. Rev., Wtr. Sys. Impvt.,
                          5.25%, 8/01/08, FGIC ...............................................         8/02 @ 102         2,205,576
                                                                                                                       ------------
                                                                                                                        253,642,013
                                                                                                                       ------------
                        PUERTO RICO--9.9%
                        Puerto Rico Elec. Pwr. Auth. Rev., Ser. DD, FSA,
   AAA       5,280        5.00%, 7/01/09 .....................................................        7/08 @ 101.5        5,349,696
   AAA       7,000        5.00%, 7/01/10 .....................................................        7/08 @ 101.5        7,084,630
   AAA       4,000      Puerto Rico Mun. Fin. Agcy., Ser. A, 5.625%, 8/01/10, FSA ............         8/09 @ 101         4,242,800
                                                                                                                       ------------
                                                                                                                         16,677,126
                                                                                                                       ------------
                        TOTAL LONG-TERM INVESTMENTS (COST $254,151,238) ......................                          270,319,139
                                                                                                                       ------------

                        SHORT-TERM INVESTMENT**--0.4%
  A-1+         700      Irvine, Impt. BD. Act 1915, Spec. Assmt. Dist. 97-17, 4.15%,
                          7/03/00, FRDD (cost $700,000) ......................................            N/A               700,000
                                                                                                                       ------------
                        TOTAL INVESTMENTS--159.9% (COST $254,851,238) ........................                          271,019,139
                        Other assets in excess of liabilities--1.8% ..........................                            3,038,030
                        Liquidation value of preferred stock--(61.7)% ........................                         (104,550,000)
                                                                                                                       ------------
                        NET ASSETS APPLICABLE TO COMMON SHAREHOLDERS--100% ...................                         $169,507,169
                                                                                                                       ============
</TABLE>

----------

*    Using the higher of Standard & Poor's, Moody's or Fitch's rating.

**   For  purposes  of  amortized  cost  valuation,  the  maturity  date of this
     instrument  is  considered  to be the earlier of the next date on which the
     security  can be  redeemed  at par,  or the next  date on which the rate of
     interest is adjusted.

+    Option  call  provisions:  date  (month/year)  and  price  of the  earliest
     optional call or redemption.  There may be other call provisions at varying
     prices at later dates.

++   This bond is prerefunded. See glossary for definition.

<TABLE>
-----------------------------------------------------------------------------------------------------------------------------------
                              THE FOLLOWING ABBREVIATIONS ARE USED IN PORTFOLIO DESCRIPTIONS:
           <S>                                                         <C>
            AMBAC -- American Municipal Bond Assurance Corporation     FRDD -- Floating Rate Daily Demand**
           C.O.P. -- Certificate of Participation                       FSA -- Financial Security Assurance
              ETM -- Escrowed to Maturity                              G.O. -- General Obligation
             FGIC -- Financial Guaranty Insurance Company              MBIA -- Municipal Bond Insurance Association
-----------------------------------------------------------------------------------------------------------------------------------
</TABLE>

                       See Notes to Financial Statements.

                                       6
<PAGE>


--------------------------------------------------------------------------------
THE BLACKROCK CALIFORNIA INSURED
MUNICIPAL 2008 TERM TRUST INC.
STATEMENT OF ASSETS AND LIABILITIES
JUNE 30, 2000 (UNAUDITED)
--------------------------------------------------------------------------------

ASSETS
Investments, at value (cost $254,851,238)
  (Note 1) .....................................................    $271,019,139
Interest receivable ............................................       4,397,043
Other assets ...................................................          13,975
                                                                    ------------
                                                                     275,430,157
                                                                    ------------

LIABILITIES
Dividends payable--common stock ................................         669,957
Due to Custodian ...............................................         239,240
Offering costs payable--preferred stock ........................         235,635
Investment advisory fee payable (Note 2) .......................          78,773
Dividends payable--preferred stock .............................          27,117
Administration fee payable (Note 2) ............................          22,506
Other accrued expenses .........................................          99,760
                                                                    ------------
                                                                       1,372,988
                                                                    ------------
NET INVESTMENT ASSETS ..........................................    $274,057,169
                                                                    ============
Net investment assets were comprised of:
  Common Stock:
    Par value (Note 4) .........................................    $    104,071
    Paid-in capital in excess of par ...........................     144,047,319
  Preferred Stock (Note 4) .....................................     104,550,000
                                                                    ------------
                                                                     248,701,390
  Undistributed net investment income ..........................       9,187,878
  Net unrealized appreciation ..................................      16,167,901
                                                                    ------------
  Net investment assets, June 30, 2000 .........................    $274,057,169
                                                                    ============
  Net assets applicable to common
    shareholders ...............................................    $169,507,169
                                                                    ============
Net asset value per common share:
  ($169,507,169 / 10,407,093 shares of
  common stock issued and outstanding) .........................          $16.29
                                                                          ======

--------------------------------------------------------------------------------
THE BLACKROCK CALIFORNIA INSURED
MUNICIPAL 2008 TERM TRUST INC.
STATEMENT OF OPERATIONS
SIX MONTHS ENDED JUNE 30, 2000 (UNAUDITED)
--------------------------------------------------------------------------------

NET INVESTMENT INCOME
Income
  Interest and discount earned .................................    $  7,391,162
                                                                    ------------
Expenses
  Investment advisory ..........................................         458,443
  Administration ...............................................         130,984
  Auction agent ................................................         128,000
  Reports to shareholders ......................................          56,000
  Custodian ....................................................          35,000
  Legal ........................................................          32,000
  Directors ....................................................          21,000
  Independent accountants ......................................          18,500
  Registration .................................................          12,000
  Transfer agent ...............................................          11,000
  Miscellaneous ................................................          35,441
                                                                    ------------
  Total expenses ...............................................         938,368
                                                                    ------------
Net investment income ..........................................       6,452,794
                                                                    ------------
UNREALIZED GAIN ON
INVESTMENTS
Net change in unrealized appreciation on
  investments ..................................................       1,667,863
                                                                    ------------


NET INCREASE IN NET INVESTMENT
ASSETS RESULTING FROM OPERATIONS ...............................    $  8,120,657
                                                                    ============

See Notes to Financial Statements.

                                       7
<PAGE>


--------------------------------------------------------------------------------
THE BLACKROCK CALIFORNIA INSURED MUNICIPAL 2008 TERM TRUST INC.
STATEMENTS OF CHANGES IN NET INVESTMENT ASSETS (UNAUDITED)
--------------------------------------------------------------------------------

                                                  SIX MONTHS ENDED  YEAR ENDED
                                                      JUNE 30,     DECEMBER 31,
                                                        2000           1999
                                                    ------------   ------------
INCREASE (DECREASE) IN NET INVESTMENT ASSETS
OPERATIONS:
  Net investment income ..........................  $  6,452,794   $ 12,199,431
  Net change in unrealized appreciation
    on investments ...............................     1,667,863    (12,439,396)
                                                    ------------   ------------
  Net increase (decrease) in net investment
    assets resulting from operations .............     8,120,657       (239,965)
                                                    ------------   ------------
DIVIDENDS:
  To common shareholders from net
    investment income ............................    (4,019,653)    (8,039,333)
  To preferred shareholders from net
    investment income ............................    (1,693,049)    (2,182,935)
                                                    ------------   ------------
    Total dividends ..............................    (5,712,702)   (10,222,268)
                                                    ------------   ------------
CAPITAL STOCK TRANSACTIONS:
  Net proceeds from additional
    issuance of preferred shares .................    25,977,490             --
                                                    ------------   ------------
    Total increase (decrease) ....................    28,385,445    (10,462,233)
                                                    ------------   ------------

NET INVESTMENT ASSETS
Beginning of period ..............................   245,671,724    256,133,957
                                                    ------------   ------------
End of period (including undistributed
  net investment income of $9,187,878
  and $8,447,786, respectively) ..................  $274,057,169   $245,671,724
                                                    ============   ============

                       See Notes to Financial Statements.

                                       8
<PAGE>


--------------------------------------------------------------------------------
THE BLACKROCK CALIFORNIA INSURED MUNICIPAL 2008 TERM TRUST INC.
FINANCIAL HIGHLIGHTS (UNAUDITED)
--------------------------------------------------------------------------------

<TABLE>
<CAPTION>
                                                 SIX MONTHS ENDED                       YEAR ENDED DECEMBER 31,
                                                      JUNE 30,        ------------------------------------------------------------
                                                        2000            1999         1998         1997         1996         1995
                                                      --------        --------     --------     --------     --------     --------
<S>                                                   <C>             <C>          <C>          <C>          <C>          <C>
PER COMMON SHARE OPERATING PERFORMANCE:
Net asset value, beginning of the period ..........   $  16.11        $  17.12     $  16.69     $  15.86     $  15.92     $  13.66
                                                      --------        --------     --------     --------     --------     --------
Net investment income .............................        .62            1.17         1.18         1.15         1.11         1.12
Net realized and unrealized gain (loss)
  on investments ..................................        .16           (1.20)         .25          .69         (.16)        2.27
                                                      --------        --------     --------     --------     --------     --------
Net increase (decrease) from investment
  operations ......................................        .78            (.03)        1.43         1.84          .95         3.39
                                                      --------        --------     --------     --------     --------     --------
Dividend and distributions:
  Dividends from net investment income to:
    Common shareholders ...........................       (.38)           (.77)        (.77)        (.77)        (.77)        (.85)
    Preferred shareholders ........................       (.16)           (.21)        (.23)        (.24)        (.24)        (.28)
  Distributions from net realized gain
    on investments to:
    Common shareholders ...........................         --              --           --           --           **           --
    Preferred shareholders ........................         --              --           --           --           **           --
  Distributions in excess of net realized gain
    on investments to:
    Common shareholders ...........................         --              --           --           --           **           **
    Preferred shareholders ........................         --              --           --           --           **           **
                                                      --------        --------     --------     --------     --------     --------
Total dividends and distributions .................       (.54)           (.98)       (1.00)       (1.01)       (1.01)       (1.13)
                                                      --------        --------     --------     --------     --------     --------
Capital charge with respect to issuance
  of preferred shares .............................       (.06)             --           --           --           --           --
                                                      --------        --------     --------     --------     --------     --------
Net asset value, end of period* ...................   $  16.29        $  16.11     $  17.12     $  16.69     $  15.86     $  15.92
                                                      ========        ========     ========     ========     ========     ========
Market value, end of period* ......................   $  14.50        $  13.88     $  15.94     $  15.25     $  14.63     $  13.63
                                                      ========        ========     ========     ========     ========     ========
TOTAL INVESTMENT RETURN+ ..........................       7.35%          (8.40)%       9.77%        9.90%       13.67%       20.57%
                                                      ========        ========     ========     ========     ========     ========
RATIOS TO AVERAGE NET ASSETS OF COMMON
  SHAREHOLDERS:
Expenses++ ........................................       1.12%+++         .98%         .91%         .98%        1.03%        1.02%
Net investment income before preferred
  stock dividends++ ...............................       7.74%+++        7.01%        6.96%        7.11%        7.11%        7.46%
Preferred stock dividends .........................       2.03%+++        1.25%        1.36%        1.48%        1.56%        1.85%
Net investment income available to common
  shareholders ....................................       5.71%+++        5.76%        5.60%        5.63%        5.55%        5.61%

SUPPLEMENTAL DATA:
Average net assets of common shareholders
  (in thousands) ..................................   $167,629        $174,070     $175,760     $167,984     $161,839     $156,774
Portfolio turnover ................................          0%              0%           0%           0%           3%          13%
Net assets of common shareholders, end of period
  (in thousands) ..................................   $169,507        $167,672     $178,134     $173,711     $165,038     $165,719
Preferred stock outstanding (in thousands) ........   $104,550        $ 78,000     $ 78,000     $ 78,000     $ 78,000     $ 78,000
Asset coverage per share of preferred stock,
  end of period ...................................   $ 65,539        $ 78,765     $ 82,111     $ 80,701     $ 77,919     $ 78,133
</TABLE>

----------

*    Net asset value and market value are  published in BARRON'S on Saturday and
     THE WALL STREET JOURNAL on Monday.

**   Actual  amount  paid from  realized  gains to  preferred  shareholders  was
     $0.00136  per common share for the year ended  December  31,  1996,  and to
     common shareholders was $0.004363 per share for the year ended December 31,
     1996.  Actual amount paid in excess of net realized gain on  investments to
     preferred  shareholders  was $0.0004  and $0.0007 per common  share for the
     years  ended  December  31,  1996 and  1995,  respectively,  and to  common
     shareholders was $0.0013 and $0.0021 per share for the years ended December
     31, 1996 and 1995, respectively.

+    Total investment  return is calculated  assuming a purchase of common stock
     at the  current  market  price on the first  day and a sale at the  current
     market  price  on the  last  day  of the  period  reported.  Dividends  and
     distributions,  if any, are assumed for purposes of this calculation, to be
     reinvested at prices obtained under the Trust's dividend reinvestment plan.
     Total  investment  return does not  reflect  brokerage  commissions.  Total
     investment returns for periods less than one full year are not annualized.

++   Ratios are  calculated  on the basis of income and expenses  applicable  to
     both the common and preferred shares and stock  dividends,  relative to the
     average net assets of common shareholders. Ratios do not reflect the effect
     of dividend payments to preferred shareholders.

+++  Annualized

The information above represents the unaudited operating  performance data for a
share of common stock outstanding,  total investment  return,  ratios to average
net  assets  and  other  supplemental  data  for  the  periods  indicated.  This
information has been determined based upon financial information provided in the
financial statements and market value data for Trust's common shares.

                       See Notes to Financial Statements.

                                       9
<PAGE>


--------------------------------------------------------------------------------
THE BLACKROCK CALIFORNIA INSURED
MUNICIPAL 2008 TERM TRUST INC.
NOTES TO FINANCIAL STATEMENTS (UNAUDITED)
--------------------------------------------------------------------------------

NOTE 1. ORGANIZATION & ACCOUNTING POLICIES

The BlackRock  California  Insured  Municipal 2008 Term Trust Inc. (the "Trust")
was  organized  in  Maryland on August 7, 1992 as a  non-diversified  closed-end
management  investment company.  The Trust's investment objective is to manage a
portfolio of high quality securities that will return $15 per share to investors
on or about December 31, 2008 while providing current income exempt from regular
federal  and  California  State  income  taxes.  The  ability of issuers of debt
securities  held by the  Trust to meet  their  obligations  may be  affected  by
economic  developments in the state, a specific industry or region. No assurance
can be given that the Trust's investment objective will be achieved.

     The following is a summary of significant  accounting  policies followed by
the Trust.

SECURITIES VALUATION:  Municipal securities  (including  commitments to purchase
such  securities  on a  "when-issued"  basis)  are valued on the basis of prices
provided  by  dealers or  pricing  services  approved  by the  Trust's  Board of
Directors.  In determining the value of a particular security,  pricing services
may use certain  information  with respect to transactions  in such  securities,
quotations from bond dealers,  market transactions in comparable  securities and
various  relationships  between  securities in  determining  values.  Short-term
securities  are valued at amortized  cost.  Any  securities  or other assets for
which such current  market  quotations  are not readily  available are valued at
fair value as determined in good faith under procedures established by and under
the general supervision and responsibility of the Trust's Board of Directors.

SECURITIES  TRANSACTIONS  AND INVESTMENT  INCOME:  Securities  transactions  are
recorded  on the trade  date.  Realized  and  unrealized  gains and  losses  are
calculated  on the  identified  cost basis.  Interest  income is recorded on the
accrual  basis and the Trust  amortizes  premium  and  accretes  original  issue
discount on securities purchased using the interest method.

FEDERAL  INCOME  TAXES:  It is the  Trust's  intention  to  continue to meet the
requirements  of the Internal  Revenue Code  applicable to regulated  investment
companies  and to distribute  sufficient  net income to  shareholders.  For this
reason and because  substantially  all of the Trust's  gross income  consists of
tax-exempt interest, no Federal income tax provision is required.

DIVIDENDS  AND  DISTRIBUTIONS:   The  Trust  declares  and  pays  dividends  and
distributions to common  shareholders  monthly from net investment  income,  net
realized short-term capital gains and other sources, if necessary. Net long-term
capital  gains,  if any,  in excess  of loss  carryforwards  may be  distributed
annually.  Dividends and  distributions  are recorded on the  ex-dividend  date.
Dividends and distributions to preferred shareholders are accrued and determined
as described in Note 4.

ESTIMATES: The preparation of financial statements in conformity with accounting
principles   generally  accepted  in  the  United  States  of  America  requires
management to make estimates and assumptions that affect the reported amounts of
assets and  liabilities  and disclosure of contingent  assets and liabilities at
the date of the financial  statements  and the reported  amounts of revenues and
expenses  during the reporting  period.  Actual  results could differ from those
estimates.

DEFERRED  COMPENSATION PLAN: Under a deferred  compensation plan approved by the
Board of Directors on February 24, 2000,  non-interested  Directors may elect to
defer receipt of all or a portion of their annual compensation.

     Deferred amounts earn a return as though equivalent dollar amounts had been
invested in common shares of other  BlackRock  funds  selected by the Directors.
This has the same economic  effect as if the Directors had invested the deferred
amounts in such other BlackRock funds.

     The deferred  compensation  plan is not funded and  obligations  thereunder
represent  general unsecured claims against the general assets of the Trust. The
Trust may, however,  elect to invest in common shares of those funds selected by
the Directors in order to match its deferred compensation obligations.

NOTE 2. AGREEMENTS

The Trust has an Investment  Advisory Agreement with BlackRock  Advisors,  Inc.,
(the "Advisor"), which is a wholly-owned subsidiary of BlackRock, Inc., which in
turn is an indirect  majority-owned  subsidiary of PNC Financial Services Group,
Inc. The Trust has an  Administration  Agreement with Princeton  Administrators,
L.P. (the "Administrator"),  an indirect wholly-owned affiliate of Merrill Lynch
& Co., Inc.

     The  investment  advisory  fee paid to the Advisor is  computed  weekly and
payable  monthly at an annual  rate of 0.35% of the Trust's  average  weekly net
investment assets.

                                       10
<PAGE>


The  administration  fee paid to the  Administrator  is also computed weekly and
payable  monthly at an annual  rate of 0.10% of the Trust's  average  weekly net
investment assets.

     Pursuant to the agreements,  the Advisor provides continuous supervision of
the investment  portfolio and pays the compensation of officers of the Trust who
are  affiliated  persons of the Advisor.  The  Administrator  pays occupancy and
certain  clerical and accounting  costs of the Trust.  The Trust bears all other
costs and expenses.

NOTE 3. PORTFOLIO SECURITIES

Purchases of investment  securities,  other than short- term investments for the
period ended June 30, 2000 aggregated  $26,875,480.  There were no sales,  other
than short-term investments, during the period ended June 30, 2000.

     The Federal  income tax basis of the Trust's  investments  at June 30, 2000
was the  same  as the  basis  for  financial  reporting,  and  accordingly,  net
unrealized      appreciation     was     $16,167,901      (gross      unrealized
appreciation--$16,182,461, gross unrealized depreciation--$14,560).

NOTE 4. CAPITAL

There are 200 million  shares of $.01 par value  common  stock  authorized.  The
Trust may classify or reclassify any unissued shares of common stock into one or
more series of preferred stock. Of the 10,407,093  common shares  outstanding at
June 30, 2000, the Advisor owned 7,093 shares.  As of June 30, 2000,  there were
4,182  preferred  shares  outstanding as follows:  Series  W28--1,560 and Series
W7--2,622, which includes 1,062 shares of Series W7 issued on March 10, 2000.

     On March 10, 2000, the Trust  reclassified 1,062 shares of common stock and
issued an additional 1,062 shares of Series W7 preferred shares.  The additional
shares  issued have  identical  rights and  features of the  existing  Series W7
preferred shares. Estimated offering costs of $307,010 and underwriting discount
of $265,500 have been charged to paid-in capital in excess of the common shares.

     Dividends on Series W7 are cumulative at a rate which is reset every 7 days
based on the results of an auction.  Dividends on Series W28 are also cumulative
at a rate  which is reset  every 28 days  based on the  results  of an  auction.
Dividend rates ranged from 2.20% to 5.10% during the period ended June 30, 2000.

     The Trust may not declare  dividends or make other  distributions on shares
of common stock or purchase any such shares if, at the time of the  declaration,
distribution  or  purchase,  asset  coverage  with  respect  to the  outstanding
Preferred Stock would be less than 200%.

     The Preferred  Stock is redeemable at the option of the Trust,  in whole or
in part, on any dividend  payment date at $25,000 per share plus any accumulated
or unpaid dividends whether or not declared. The Preferred Stock is also subject
to  mandatory  redemption  at $25,000 per share plus any  accumulated  or unpaid
dividends,  whether or not  declared  if certain  requirements  relating  to the
composition  of the  assets  and  liabilities  of the  Trust as set forth in the
Articles of Incorporation are not satisfied.

     The holders of Preferred  Stock have voting  rights equal to the holders of
common stock (one vote per share) and will vote  together with holders of shares
of common stock as a single class. However,  holders of Preferred Stock are also
entitled to elect two of the Trust's  directors.  In  addition,  the  Investment
Company Act of 1940 requires that along with approval by stockholders that might
otherwise  be  required,  the  approval  of the  holders  of a  majority  of any
outstanding  preferred stock,  voting separately as a class would be required to
(a) adopt any plan of  reorganization  that would adversely affect the Preferred
Stock, and (b) take any action requiring a vote of security holders,  including,
among other  things,  changes in the Trust's  subclassification  as a closed-end
investment company or changes in its fundamental investment restrictions.

NOTE 5. DIVIDENDS

On June 30, 2000,  the Board of Directors of the Trust  declared a dividend from
undistributed  earnings of $0.064375 per common share payable  August 1, 2000 to
shareholders of record on July 14, 2000.

     For the  period  July 1,  2000 to July  31,  2000,  dividends  declared  on
Preferred Stock totalled $329,784 in aggregate for the two outstanding Preferred
Stock series.

                                       11
<PAGE>

--------------------------------------------------------------------------------
         THE BLACKROCK CALIFORNIA INSURED MUNICIPAL 2008 TERM TRUST INC.
                           DIVIDEND REINVESTMENT PLAN
--------------------------------------------------------------------------------

     Pursuant  to  the  Trust's   Dividend   Reinvestment   Plan  (the  "Plan"),
shareholders may elect to have all  distributions of dividends and capital gains
reinvested  by State Street Bank and Trust  Company (the "Plan  Agent") in Trust
shares  pursuant to the Plan.  Shareholders  who do not  participate in the Plan
will receive all  distributions  in cash paid by check in United States  dollars
mailed  directly  to the  shareholders  of record  (or if the shares are held in
street or other nominee  name,  then to the nominee) by the transfer  agent,  as
dividend disbursing agent.

     The Plan Agent serves as agent for the  shareholders in  administering  the
Plan.  After the Trust  declares a dividend or determines to make a capital gain
distribution,  the Plan Agent will, as agent for the  participants,  receive the
cash  payment and use it to buy Trust  shares in the open market on the New York
Stock Exchange or elsewhere for the participants'  accounts.  The Trust will not
issue any new shares under the Plan.

     Participants  in the Plan may withdraw from the Plan upon written notice to
the Plan Agent and will receive  certificates  for whole Trust shares and a cash
payment for any fraction of a Trust share.

     The Plan Agent's fees for the handling of the reinvestment of dividends and
distributions  will be paid by the Trust.  However,  each participant will pay a
pro rata  share of  brokerage  commissions  incurred  with  respect  to the Plan
Agent's open market  purchases in connection with the  reinvestment of dividends
and  distributions.  The automatic  reinvestment of dividends and  distributions
will not relieve  participants  of any federal income tax that may be payable on
such dividends or distributions.

     The Trust  reserves the right to amend or terminate  the Plan as applied to
any dividend or  distribution  paid  subsequent to written  notice of the change
sent to all  shareholders  of the Trust at least 90 days  before the record date
for the dividend or distribution.  The Plan also may be amended or terminated by
the Plan Agent upon at least 90 days' written notice to all  shareholders of the
Trust.  All  correspondence  concerning  the Plan should be directed to the Plan
Agent at (800) 699-1BFM. The address is on the front of this report.

                                       12
<PAGE>


--------------------------------------------------------------------------------
         THE BLACKROCK CALIFORNIA INSURED MUNICIPAL 2008 TERM TRUST INC.
                             ADDITIONAL INFORMATION
--------------------------------------------------------------------------------

     ANNUAL MEETING OF TRUST  SHAREHOLDERS.  There have been no material changes
in the Trust's investment  objectives or policies that have not been approved by
the  shareholders  or to its charter or by-laws or in the principal risk factors
associated  with  investment  in the  Trust.  There  have been no changes in the
persons who are  primarily  responsible  for the  day-to-day  management  of the
Trust's Portfolio.

     The Annual Meeting of Trust  Shareholders  was held May 18, 2000 to vote on
the following matters:

     (1)  To elect two Directors as follows:

     DIRECTORS                               CLASS         TERM         EXPIRING
     -------                                 -----         -----         -------
     Richard E. Cavanagh .................     I          3 years         2003
     James Clayburn La Force, Jr. ........     I          3 years         2003

     Directors whose term of office  continues beyond this meeting are Andrew F.
     Brimmer, Kent Dixon, Frank J. Fabozzi,  Laurence D. Fink, Walter F. Mondale
     and Ralph L. Schlosstein.

     (2)  To ratify the selection of Deloitte & Touche LLP as independent public
          accountants of the Trust for the fiscal year ending December 31, 2000.

     Shareholders  elected the two  Directors  and  ratified  the  selection  of
     Deloitte & Touche LLP. The results of the voting was as follows.

                                       VOTES FOR*   VOTES AGAINST*  ABSTENTIONS*
                                        --------      -----------    ----------
     Richard E. Cavanagh ............      3,119          --             --
     James Clayburn La Force, Jr. ...  8,622,621          --          149,434
     Ratification of
       Deloitte & Touche LLP ........  8,627,069        75,483         69,503

----------

*    The votes represent  common and preferred  shareholders  voting as a single
     class except for the election of Richard E. Cavanagh who was elected by the
     preferred shareholders.

                                       13
<PAGE>


--------------------------------------------------------------------------------
         THE BLACKROCK CALIFORNIA INSURED MUNICIPAL 2008 TERM TRUST INC.
                               INVESTMENT SUMMARY
--------------------------------------------------------------------------------

THE TRUST'S INVESTMENT OBJECTIVE

The  BlackRock   California  Insured  Municipal  2008  Term  Trust's  investment
objective  is  to  provide  current  income  exempt  from  regular  federal  and
California  income tax and to return $15 per share (the initial public  offering
price per share) to investors on or about December 31, 2008.

WHO MANAGES THE TRUST?

BlackRock  Advisors,  Inc.  (the  "Advisor")  is  an  SEC-registered  investment
advisor.  As  of  June  30,  2000,   BlackRock  and  its  affiliates   (together
"BlackRock")  managed  over $177  billion  on behalf of taxable  and  tax-exempt
clients  worldwide.  Strategies  include fixed  income,  equity and cash and may
incorporate both domestic and  international  securities.  Domestic fixed income
strategies  utilize the  government,  mortgage,  corporate  and  municipal  bond
sectors. BlackRock manages twenty-two closed-end funds that are traded on either
the New York or American stock  exchanges,  and a $28 billion family of open-end
funds.  BlackRock manages over 629 accounts,  domiciled in the United States and
overseas.

WHAT CAN THE TRUST INVEST IN?

The Trust  intends  to invest  at least  80% of its total  assets in  California
municipal  obligations  insured as to the timely  payment of both  principal and
interest. The Trust may invest up to 20% of total assets in uninsured California
municipal  obligations  which  are rated Aaa by  Moody's  or AAA by S&P,  or are
determined  by the  Advisor  to be of  comparable  credit  quality  (guaranteed,
escrowed or backed in trust).

WHAT IS THE ADVISOR'S INVESTMENT STRATEGY?

The Advisor will seek to meet the Trust's  investment  objective by managing the
assets of the Trust so as to return the initial  offering  price ($15 per share)
at maturity.  The Advisor will implement a conservative  strategy that will seek
to closely  match the  maturity of the assets of the  portfolio  with the future
return of the initial investment at the end of 2008. At the Trust's termination,
BlackRock expects that the value of the securities which have matured,  combined
with the value of the  securities  that are sold,  if any, will be sufficient to
return the initial offering price to investors. On a continuous basis, the Trust
will seek its  objective  by  actively  managing  its  portfolio  of  California
municipal  obligations  and  retaining a small  amount of income  each year.

In addition to seeking the return of the  initial  offering  price,  the Advisor
also seeks to provide  current income exempt from regular federal and California
income tax to  investors.  The  portfolio  managers will attempt to achieve this
objective  by investing  in  securities  that  provide  competitive  income.  In
addition, leverage will be used to enhance the income of the portfolio. In order
to maintain competitive yields as the Trust approaches maturity and depending on
market  conditions,  the Advisor will attempt to purchase  securities  with call
protection  or  maturities  as close to the Trust's  maturity  date as possible.
Securities with call protection should provide the portfolio with some degree of
protection against  reinvestment risk during times of lower prevailing  interest
rates. Since the Trust's primary goal is to return the initial offering price at
maturity,  any cash that the Trust  receives  prior to its maturity date will be
reinvested in securities with maturities  which coincide with the remaining term
of  the  Trust.  Since  shorter-term   securities   typically  yield  less  than
longer-term  securities,  this  strategy  will likely result in a decline in the
Trust's income over time. It is important to note that the Trust will be managed
so as to preserve the integrity of the return of the initial  offering price. If
market conditions, such as high interest rate volatility, force a choice between
current  income and  risking  the return of the initial  offering  price,  it is
likely that the return of the initial offering price will be emphasized.

HOW ARE THE TRUST'S  SHARES  PURCHASED  AND SOLD?  DOES THE TRUST PAY  DIVIDENDS
REGULARLY?

The  Trust's  shares are traded on the New York Stock  Exchange  which  provides
investors with  liquidity on a daily basis.  Orders to buy or sell shares of the
Trust must be placed through a registered broker or financial advisor. The Trust
pays monthly dividends which are typically paid on the first business day of the
month. For shares held in the shareholder's name, dividends may be reinvested in
additional shares of the Trust through the Trust's transfer agent,  State Street
Bank and Trust Company. Investors who wish to hold shares in a brokerage account
should check with their financial  advisor to determine  whether their brokerage
firm offers dividend reinvestment services.

                                       14
<PAGE>


LEVERAGE CONSIDERATIONS IN A TERM TRUST

Under current  market  conditions,  leverage  increases the income earned by the
Trust.  The Trust employs leverage  primarily  through the issuance of preferred
stock.  Leverage  permits  the Trust to  borrow  money at  short-term  rates and
reinvest that money in longer-term  assets which typically offer higher interest
rates.  The  difference  between the cost of the  borrowed  funds and the income
earned on the proceeds that are invested in longer term assets is the benefit to
the  Trust  from  leverage.

Leverage also increases the duration (or price  volatility of the net assets) of
the Trust,  which can improve the  performance  of the Trust in a declining rate
environment,  but can cause net  assets to decline  faster  than the market in a
rapidly rising rate environment.  The Advisor's portfolio managers  continuously
monitor and  regularly  review the  Trust's  use of  leverage  and the Trust may
reduce,  or unwind,  the amount of leverage employed should the Advisor consider
that reduction to be in the best interests of the shareholders.

SPECIAL CONSIDERATIONS AND RISK FACTORS RELEVANT TO TERM TRUSTS

THE TRUST IS  INTENDED  TO BE A  LONG-TERM  INVESTMENT  AND IS NOT A  SHORT-TERM
TRADING VEHICLE.

RETURN OF INITIAL  INVESTMENT.  Although the objective of the Trust is to return
its initial offering price upon termination, there can be no assurance that this
objective will be achieved.

DIVIDEND  CONSIDERATIONS.  The income and dividends paid by the Trust are likely
to  decline  to some  extent  over the term of the Trust due to the  anticipated
shortening  of the  dollar-weighted  average  maturity  of the  Trust's  assets.

LEVERAGE.  The Trust utilizes  leverage  through the issuance of preferred stock
which involves  special risks.  The Trust's net asset value and market value may
be more volatile due to its use of leverage.

MARKET PRICE OF SHARES.  The shares of closed-end  investment  companies such as
the Trust trade on the New York Stock  Exchange  (NYSE symbol:  BFC) and as such
are subject to supply and demand influences.  As a result, shares may trade at a
discount or a premium to their net asset value.

ILLIQUID  SECURITIES.  The Trust may  invest in  securities  that are  illiquid,
although  under current  market  conditions the Trust expects to do so to only a
limited  extent.   Investing  in  these   securities   involves  special  risks.

ANTITAKEOVER  PROVISIONS.  Certain antitakeover provisions will make a change in
the Trust's  business or management  more difficult  without the approval of the
Trust's Board of Directors and may have the effect of depriving  shareholders of
an  opportunity  to sell their shares at a premium above the  prevailing  market
price.

MUNICIPAL OBLIGATIONS.  Municipal obligations include debt obligations issued by
states,  cities, and local authorities,  and possessions and certain territories
of the United States to obtain funds for various public purposes,  including the
construction of public  facilities,  the refinancing of outstanding  obligations
and the obtaining of funds for general operating expenses and for loans to other
public  institutions  and  facilities.  The value of municipal  debt  securities
generally  varies  inversely with changes in prevailing  market  interest rates.
Depending  on the amount of call  protection  that the  securities  in the Trust
have, the Trust may be subject to certain  reinvestment risks in environments of
declining interest rates.

ALTERNATIVE  MINIMUM TAX (AMT).  The Trust may invest in  securities  subject to
AMT. The Trust currently holds no securities that are subject to AMT.

                                       15
<PAGE>


--------------------------------------------------------------------------------
         THE BLACKROCK CALIFORNIA INSURED MUNICIPAL 2008 TERM TRUST INC.
                                    GLOSSARY
--------------------------------------------------------------------------------

CLOSED-END FUND:           Investment  vehicle  which  initially  offers a fixed
                           number of shares and trades on a stock exchange.  The
                           fund  invests  in  a  portfolio  of   securities   in
                           accordance with its stated investment  objectives and
                           policies.

DISCOUNT:                  When a fund's  net asset  value is  greater  than its
                           stock  price,  the  fund is said to be  trading  at a
                           discount.

DIVIDEND:                  Income  generated by  securities  in a portfolio  and
                           distributed  to   shareholders   after  deduction  of
                           expenses. This Trust declares and pays dividends on a
                           monthly basis.

DIVIDEND REINVESTMENT:     Shareholders may have all  distributions of dividends
                           and  capital  gains  automatically   reinvested  into
                           additional shares of the Trust.

MARKET PRICE:              Price  per  share  of  a  security   trading  in  the
                           secondary market.  For a closed-end fund, this is the
                           price at which  one  share of the fund  trades on the
                           stock  exchange.  If you were to buy or sell  shares,
                           you would pay or receive the market price.

NET ASSET VALUE (NAV):     Net  asset  value is the  total  market  value of all
                           securities  and other assets held by the Trust,  plus
                           income   accrued   on  its   investment,   minus  any
                           liabilities  including accrued  expenses,  divided by
                           the total  number of  outstanding  shares.  It is the
                           underlying  value of a single  share on a given  day.
                           Net asset  value for the Trust is  calculated  weekly
                           and  published  in BARRON'S on Saturday  and THE WALL
                           STREET JOURNAL on Monday.

PREMIUM:                   When a fund's  stock  price is  greater  than its net
                           asset  value,  the  fund is said to be  trading  at a
                           premium.

PRE-REFUNDED BONDS:        These  securities  are  collateralized  by  the  U.S.
                           Government  securities  which are held in escrow  and
                           are  used  to  pay  principal  and  interest  on  the
                           tax-exempt  issue and to  retire  the bond in full at
                           the date indicated, typically at a premium to par.

                                       16
<PAGE>


--------------------------------------------------------------------------------
                            BLACKROCK ADVISORS, INC.
                           SUMMARY OF CLOSED-END FUNDS
--------------------------------------------------------------------------------

TAXABLE TRUSTS
--------------------------------------------------------------------------------

                                                                STOCK   MATURITY
PERPETUAL TRUSTS                                                SYMBOL    DATE
                                                                ------   ------
The BlackRock Income Trust Inc.                                   BKT      N/A
The BlackRock North American Government Income Trust Inc.         BNA      N/A
The BlackRock High Yield Trust                                    BHY      N/A

TERM TRUSTS
The BlackRock Target Term Trust Inc.                              BTT     12/00
The BlackRock 2001 Term Trust Inc.                                BTM     06/01
The BlackRock Strategic Term Trust Inc.                           BGT     12/02
The BlackRock Investment Quality Term Trust Inc.                  BQT     12/04
The BlackRock Advantage Term Trust Inc.                           BAT     12/05
The BlackRock Broad Investment Grade 2009 Term Trust Inc.         BCT     12/09


TAX-EXEMPT TRUSTS
--------------------------------------------------------------------------------

                                                                STOCK   MATURITY
PERPETUAL TRUSTS                                                SYMBOL    DATE
                                                                ------   ------
The BlackRock Investment Quality Municipal Trust Inc.             BKN      N/A
The BlackRock California Investment Quality Municipal Trust Inc.  RAA      N/A
The BlackRock Florida Investment Quality Municipal Trust          RFA      N/A
The BlackRock New Jersey Investment Quality Municipal Trust Inc.  RNJ      N/A
The BlackRock New York Investment Quality Municipal Trust Inc.    RNY      N/A
The BlackRock Pennsylvania Strategic Municipal Trust              BPS      N/A
The BlackRock Strategic Municipal Trust                           BSD      N/A

TERM TRUSTS
The BlackRock Municipal Target Term Trust Inc.                    BMN     12/06
The BlackRock Insured Municipal 2008 Term Trust Inc.              BRM     12/08
The BlackRock California Insured Municipal 2008 Term Trust Inc.   BFC     12/08
The BlackRock Florida Insured Municipal 2008 Term Trust           BRF     12/08
The BlackRock New York Insured Municipal 2008 Term Trust Inc.     BLN     12/08
The BlackRock Insured Municipal Term Trust Inc.                   BMT     12/10

                                       17
<PAGE>


--------------------------------------------------------------------------------
                            BLACKROCK ADVISORS, INC.
                                   AN OVERVIEW
--------------------------------------------------------------------------------

     BlackRock  Advisors,  Inc. (the "Advisor") is an SEC-registered  investment
advisor.  As of  June  30,  2000,  the  Advisor  and its  affiliates  (together,
"BlackRock")  managed $177 billion on behalf of taxable and  tax-exempt  clients
worldwide.  Strategies include fixed income, equity and cash and may incorporate
both  domestic  and  international  securities.   BlackRock  manages  twenty-two
closed-end  funds  that are  traded on  either  the New York or  American  stock
exchanges,  and a $28 billion family of open-end funds.  BlackRock  manages over
629 accounts, domiciled in the United States and overseas.

     BlackRock's fixed income product was introduced in 1988 by a team of highly
seasoned  fixed  income   professionals.   These   professionals  had  extensive
experience   creating,   analyzing   and  trading  a  variety  of  fixed  income
instruments,  including the most complex structured securities. In fact, several
individuals  at BlackRock  were  responsible  for  developing  many of the major
innovations  in  the  mortgage-backed   and  asset-backed   securities  markets,
including   the  creation  of  the  first  CMO,  the  floating   rate  CMO,  the
senior/subordinated pass-through and the multi-class asset-backed security.

     BlackRock  is unique  among  asset  management  and  advisory  firms in the
emphasis it places on the  development of proprietary  analytical  capabilities.
Over one  quarter of the  firm's  professionals  are  dedicated  to the  design,
maintenance  and use of these  systems,  which are not  otherwise  available  to
investors. BlackRock's proprietary analytical tools are used for evaluating, and
designing fixed income investment  strategies for client portfolios.  Securities
purchased include mortgages,  corporate bonds,  municipal bonds and a variety of
hedging instruments.

     BlackRock  has  developed  investment  products  that respond to investors'
needs and has been  responsible  for several  major  innovations  in  closed-end
funds. In fact,  BlackRock  introduced the first  closed-end  mortgage fund, the
first taxable and tax-exempt  closed-end funds to offer a finite term, the first
closed-end  fund to  achieve a AAA rating by  Standard  & Poor's,  and the first
closed-end  fund to invest  primarily in North American  Government  securities.
Currently,  BlackRock's closed-end funds have dividend reinvestment plans, which
are designed to provide  ongoing  demand for the stock in the secondary  market.
BlackRock  manages a wide range of  investment  vehicles,  each having  specific
investment objectives and policies.

     In view of our  continued  desire to provide a high level of service to all
our shareholders, BlackRock maintains a toll-free number for your questions. The
number is (800) 227-7BFM (7236).  We encourage you to call us with any questions
that you may have about your BlackRock  funds and we thank you for the continued
trust that you place in our abilities.


                      IF YOU WOULD LIKE FURTHER INFORMATION
           PLEASE DO NOT HESITATE TO CALL BLACKROCK AT (800) 227-7BFM

                                       18
<PAGE>


---------
BLACKROCK
---------

DIRECTORS
Laurence D. Fink, CHAIRMAN
Andrew F. Brimmer
Richard E. Cavanagh
Kent Dixon
Frank J. Fabozzi
James Clayburn La Force, Jr.
Walter F. Mondale
Ralph L. Schlosstein

OFFICERS
Ralph L. Schlosstein, PRESIDENT
Keith T. Anderson, VICE PRESIDENT
Michael C. Huebsch, VICE PRESIDENT
Robert S. Kapito, VICE PRESIDENT
Kevin M. Klingert, VICE PRESIDENT
Richard M. Shea, VICE PRESIDENT/TAX
Henry Gabbay, TREASURER
James Kong, ASSISTANT TREASURER
Karen H. Sabath, SECRETARY

INVESTMENT ADVISOR
BlackRock Advisors, Inc.
400 Bellevue Parkway
Wilmington, DE 19809
(800) 227-7BFM

ADMINISTRATOR
Princeton Administrators, L.P.
P.O.Box 9095
Princeton, NJ 08543-9095
(800) 543-6217

CUSTODIAN AND TRANSFER AGENT
State Street Bank and Trust Company
One Heritage Drive
North Quincy, MA 02171
(800) 669-1BFM

AUCTION AGENT
Deutsche Bank
4 Albany Street
New York, NY 10006

INDEPENDENT AUDITORS
Deloitte & Touche LLP
Two World Financial Center
New York, NY 10281-1434

LEGAL COUNSEL
Skadden, Arps, Slate, Meagher & Flom LLP
Four Times Square
New York, NY 10036

LEGAL COUNSEL -- INDEPENDENT DIRECTORS
Debevoise & Plimpton
875 Third Avenue
New York, NY 10022

     The accompanying  financial statements as of June 30, 2000 were not audited
and accordingly, no opinion is expressed on them.

     This  report  is for  shareholder  information.  This  is not a  prospectus
intended for use in the purchase or sale of any securities.

                        THE BLACKROCK CALIFORNIA INSURED
                         MUNICIPAL 2008 TERM TRUST INC.
                       c/o Princeton Administrators, L.P.
                     P.O. Box 9095, Princeton, NJ 08543-9095
                                 (800) 543-6217

                                                                     09247G 10 8
                                                                     09247G 20 7
[RECYCLE LOGO] Printed on recycled paper                             09247G 30 6



    ---------
    BLACKROCK
THE ---------
CALIFORNIA INSURED
MUNICIPAL 2008
TERM TRUST INC.
---------------------
SEMI-ANNUAL REPORT
JUNE 30, 2000

[GRAPHIC OMITTED]



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