BLACKROCK NEW JERSEY INVESTMENT QUALITY MUNICIPAL TRUST INC
N-30D, 2000-06-29
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        THE BLACKROCK NEW JERSEY INVESTMENT QUALITY MUNICIPAL TRUST INC.
                       SEMI-ANNUAL REPORT TO SHAREHOLDERS
                         REPORT OF INVESTMENT ADVISOR
--------------------------------------------------------------------------------
                                                                    May 31, 2000
Dear Shareholder:

     The Federal  Reserve  continued  to  aggressively  tighten in an attempt to
achieve its objective of a  soft-landing  for the explosive U.S.  economy.  As a
result,  the Federal  Reserve  tightened  short-term  rates by 0.75%  during the
period and raised rates by another  0.50% at the May FOMC  meeting to 6.50%.  In
the  first  four  months  of  the  new   millennium  we  have  been  witness  to
unprecedented  volatility  in both  the  Treasury  yield  curve  and the  spread
sectors.  The Treasury curve inverted  sharply as  expectations of continued Fed
tightening in the wake of an insatiable U.S.  economy,  while  anticipation of a
significant buyback at the long end of the maturity spectrum led to lower yields
on long  Treasuries.  The yield curve inversion along with the premium placed on
the  dwindling  outstanding  Treasuries  caused a dramatic  underperformance  of
spread sectors relative to the performance of the Treasury  sectors,  especially
in the 10- to 30-year part of the curve.

     At this juncture,  the general  implication for spread product is negative,
but the potential for spread widening is more limited. Most of the negatives for
high quality spread product in terms of relative  supply  differentials  between
Treasuries  and  non-Treasuries  as well as equity market  volatility  have been
priced  into  the  market.  Given  current  market  conditions,  we  maintain  a
significant  overweight in high quality  spread  product.  Treasuries  are fully
valued even  considering  the strong  technicals in the market.  While near-term
volatility is virtually  guaranteed by an active Federal  Reserve,  a successful
soft landing of the economy would ultimately result in a healthier U.S. economy.

     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>


                                                                   May 31, 2000
Dear Shareholder:

     We are  pleased  to  present  the  unaudited  semi-annual  report  for  The
BlackRock New Jersey  Investment  Quality Municipal Trust Inc. ("the Trust") for
the six months ended April 30, 2000. We would like to take this  opportunity  to
review the Trust's stock price and net asset value (NAV) performance,  summarize
market developments and discuss recent portfolio management activity.

     The Trust is a non-diversified, actively managed closed-end bond fund whose
shares are traded on the American  Stock  Exchange  under the symbol "RNJ".  The
Trust's  investment  objective is to provide high current  income that is exempt
from  regular  federal and New Jersey state  income  taxes  consistent  with the
preservation of capital.  The Trust seeks to achieve this objective by investing
in  investment  grade  (rated  "AAA"  to "BBB" by a major  rating  agency  or of
equivalent  quality)  municipal debt securities  issued by local  municipalities
throughout New Jersey.

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

                        --------------------------------------------------------
                         4/30/00    10/31/99   CHANGE        HIGH         LOW
--------------------------------------------------------------------------------
 STOCK PRICE             $11.625     $12.25     (5.1)%     $12.4375     $11.50
--------------------------------------------------------------------------------
 NET ASSET VALUE (NAV)   $13.51      $13.52    (0.07)%     $13.77       $13.19
--------------------------------------------------------------------------------

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 Reserves  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 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 rose from 6.02% on October 31, 1999 to 6.22% on
April 30, 2000.

     Municipal bonds  outperformed  the taxable  domestic bond market during the
past six months,  returning  2.63% (as measured by the LEHMAN  MUNICIPAL  INDEX)
versus the LEHMAN AGGREGATE INDEX'S 1.42% on a pre-tax basis.  Overall, the tone
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 43% decline in overall new municipal  bond issuance led by a 90% drop
in refunding  volume.  Refunding  volume was down due to the  relatively  higher
interest  rates  experienced  during the first quarter 2000 when compared to the
first quarter  1999,  while new money  issuance has declined  because the strong
economy has led to full  coffers at most  municipalities.  Currently,  municipal
bonds  across  the  entire  maturity  spectrum  are  at  their  most  attractive
relationships to their Treasury market counterparts.

                                       2
<PAGE>


     New Jersey's  diverse and strong  economy  continues  to fuel  moderate job
creation.  The  widespread  expansion  supports New Jersey's 43% increase in per
capita  disposable  personal income during the 1990's,  making it the highest in
the  mid-Atlantic  region and second  amongst the states.  Although  the State's
unemployment  rate has remained low and relatively  stable,  3.9% in March 2000,
the  State's  labor  force  is  projected  to  increase  7.6% by 2006  outpacing
anticipated  population  increases  of 5.6%  during  the same time  period.  The
decline in  manufacturing  jobs is  expected to continue  while  service  sector
employment expands.

     The State's economic growth supports New Jersey's strong financial position
despite Governor Whitman's six-year history of income,  business,  and corporate
tax reductions. The State's general obligation bonds' creditworthiness continues
to be enhanced with the annually increasing Rainy Day fund, (+17% 1998-1999) and
the larger unreserved General Fund balance,  which together were 5.2% of General
Fund revenues in FY1999 and are budgeted to be yet greater in FY2000.

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,
credits and coupons.

     Additionally, 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.  At the
end of the  semi-annual  period,  the Trust's  leverage  amount was 35% of total
assets.

     As municipal credit spreads remained tight during the reporting  period, we
continued to emphasize  higher rated  securities over the lower rated investment
grade  sector.  We continue to believe  that credit  spreads will return to more
historical  levels in the near  future and as such the Trust  should be rewarded
for its higher  credit  quality  bias.  The Trust has continued its bias towards
premium coupon  securities over discount priced  securities,  as premium coupons
offer better  price  performance  during  periods of rising  interest  rates and
similar performance to discounts when interest rates fall.

     The following charts compare the Trust's current and October 31, 1999 asset
composition and credit quality allocations:


--------------------------------------------------------------------------------
                                SECTOR BREAKDOWN
--------------------------------------------------------------------------------
 SECTOR                                       APRIL 30, 2000   OCTOBER 31, 1999
--------------------------------------------------------------------------------
  Special Tax                                       25%               19%
--------------------------------------------------------------------------------
  Transportation                                    24%               25%
--------------------------------------------------------------------------------
  Hospital                                          14%               10%
--------------------------------------------------------------------------------
  Power                                              7%                7%
--------------------------------------------------------------------------------
  Housing                                            5%                5%
--------------------------------------------------------------------------------
  Resource Recovery                                  5%                5%
--------------------------------------------------------------------------------
  School                                             5%                5%
--------------------------------------------------------------------------------
  Special District                                   5%               --
--------------------------------------------------------------------------------
  University                                         5%               10%
--------------------------------------------------------------------------------
  Water & Sewer                                      5%               --
--------------------------------------------------------------------------------
  Lease Revenue                                     --                14%
--------------------------------------------------------------------------------

                                       3
<PAGE>


--------------------------------------------------------------------------------
   CREDIT RATING*                           APRIL 30, 2000     OCTOBER 31, 1999
--------------------------------------------------------------------------------
  AAA/Aaa                                          73%                73%
--------------------------------------------------------------------------------
  AA/Aa                                            15%                15%
--------------------------------------------------------------------------------
  A/A                                               5%                 5%
--------------------------------------------------------------------------------
  BBB/Baa                                           7%                 7%
--------------------------------------------------------------------------------

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

     We look  forward to  continuing  to manage  the Trust to  benefit  from the
opportunities  available to investors in the investment grade municipal  market.
We thank you for your  investment  and  continued  interest in The BlackRock New
Jersey  Investment  Quality  Municipal  Trust Inc.  Please feel free to call our
marketing  center at (800)  227-7BFM  (7236) if you have any 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 NEW JERSEY INVESTMENT QUALITY MUNICIPAL TRUST INC.
--------------------------------------------------------------------------------
  Symbol on American Stock Exchange:                           RNJ
--------------------------------------------------------------------------------
  Initial Offering Date:                                   May 28, 1993
--------------------------------------------------------------------------------
  Closing Stock Price as of 4/30/00:                         $11.625
--------------------------------------------------------------------------------
  Net Asset Value as of 4/30/00:                             $13.51
--------------------------------------------------------------------------------
  Yield on Closing Stock Price as of 4/30/00 ($11.625)(1):     6.29%
--------------------------------------------------------------------------------
  Current Monthly Distribution per Share(2):                 $ 0.0609
--------------------------------------------------------------------------------
  Current Annualized Distribution per Share(2):              $ 0.7308
--------------------------------------------------------------------------------

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

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

                                       4
<PAGE>

--------------------------------------------------------------------------------
THE BLACKROCK NEW JERSEY INVESTMENT QUALITY MUNICIPAL TRUST INC.
PORTFOLIO OF INVESTMENTS APRIL 30, 2000 (Unaudited)
--------------------------------------------------------------------------------

<TABLE>
<CAPTION>
            PRINCIPAL
              AMOUNT                                                                                  OPTION CALL       VALUE
 RATING*      (000)                                     DESCRIPTION                                    PROVISION+      (NOTE 1)
---------------------------------------------------------------------------------------------------------------------------------
<S>         <C>         <C>                                                                        <C>              <C>
                        LONG-TERM INVESTMENTS-152.3%
                        NEW JERSEY-137.8%
 AAA        $  1,000    Delaware River Port Auth. of PA & NJ, Rev., 5.75%, 1/01/26, FSA ..........   1/10 at 100     $   981,550
 AAA           1,000++  Essex Cnty. Util. Auth. Solid Waste Rev., Ser. A, 5.60%, 4/01/06, FSA ....       N/A           1,041,080
                        New Jersey Econ. Dev. Auth.,
 AAA           1,000     Mkt. Trans. Fac., Ser. A, 5.875%, 7/01/11, MBIA .........................    7/04 at 102      1,037,600
 AAA             900     Trans. Proj. Ser. A, 5.75%, 5/01/10, FSA ................................   No Opt. Call        935,649
 BBB-            500     Trigen-Trenton Proj., 6.20%, 12/01/10 ...................................   12/03 at 102        494,900
                        New Jersey Hlth. Care Fac. Fin. Auth. Rev.,
 A3            1,000     Hackensack Univ. Med. Ctr., 6.00%, 1/01/25 ..............................    1/10 at 101        955,330
 AAA           1,000     Riverview Med. Ctr., 5.50%, 7/01/13, AMBAC ..............................    7/04 at 102      1,035,170
 AAA           1,000     St. Josephs Hosp. & Med. Ctr., 5.75%, 7/01/16, CONNIE LEE ...............    7/06 at 102        999,950
 AAA           1,000++  New Jersey Sports & Exposition Auth. Rev., Conv. Ctr. Luxury Tax,
                         Ser. A, 6.00%, 7/01/02, MBIA ............................................       N/A           1,042,540
 AAA           1,000    New Jersey St. Ed. Fac. Auth. Rev., Rowan College, Ser. E,
                         5.875%, 7/01/16, AMBAC ..................................................    7/06 at 101      1,015,820
 AAA           1,000    New Jersey St. Hsg. & Mtge. Fin., Home Buyer, Ser. O, 6.35%,
                         10/01/27, MBIA .......................................................... 10/05 at 101.5      1,008,010
 AAA           1,000    New Jersey St. Tpke. Auth. Rev., Ser. C, 6.50%, 1/01/16, AMBAC ...........   No Opt. Call      1,104,290
                        New Jersey St. Trans. Sys. Auth., Trust Fund, Ser. B, MBIA,
 AAA           1,000     5.50%, 6/15/15 ..........................................................    6/05 at 102        992,600
 AAA           1,000     5.75%, 6/15/14 ..........................................................    6/05 at 102      1,013,830
 AA            1,000++  North Brunswick Twnshp. Brd. of Ed., 6.30%, 2/01/05 ......................       N/A           1,052,490
 Aaa           1,000    Passaic Valley New Jersey Sewage Com., Sewer Sys., Ser. E,
                         5.75%, 12/01/21, AMBAC ..................................................   12/09 at 101        987,730
                        Port Auth. of NY & NJ,
 AA-           1,000     5.75%, 12/15/20 .........................................................    6/05 at 101        983,260
 AA-           1,000     Ser. 74, 6.75%, 8/01/26 .................................................    8/01 at 101      1,026,020
                        South Jersey Trans. Auth., Trans. Sys. Rev., Ser. B, MBIA,
 AAA             570++   6.00%, 11/01/02 .........................................................       N/A             595,479
 AAA             430     6.00%, 11/01/12 .........................................................   11/02 at 102        440,496
                                                                                                                     -----------
                                                                                                                      18,743,794
                                                                                                                     -----------
                        PUERTO RICO-14.5%
 AAA           1,000    Puerto Rico Commonwealth, 5.40%, 7/01/25, FSA ............................  7/06 at 101.5        944,800
 BBB+          1,000    Puerto Rico Elec. Pwr. Auth. Rev., Ser. U, 6.00%, 7/01/14 ................    7/04 at 102      1,025,020
                                                                                                                     -----------
                                                                                                                       1,969,820
                                                                                                                     -----------
</TABLE>

                       See Notes to Financial Statements.

                                       5
<PAGE>


<TABLE>
<CAPTION>
-----------------------------------------------------------------------------------------------------------------
           PRINCIPAL
            AMOUNT                                                                    OPTION CALL       VALUE
 RATING*     (000)                             DESCRIPTION                             PROVISION+     (NOTE 1)
-----------------------------------------------------------------------------------------------------------------
<S>       <C>        <C>                                                             <C>           <C>
                     TOTAL LONG-TERM INVESTMENTS-152.3% (COST $20,107,211)..........                $ 20,713,614
                     Other assets in excess of liabilities-2.8% ....................                     389,678
                     Liquidation value of preferred stock-(55.1)% ..................                  (7,500,000)
                                                                                                    ------------
                     NET ASSETS APPLICABLE TO COMMON SHAREHOLDERS-100% .............                $ 13,603,292
                                                                                                    ============

</TABLE>

----------

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

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

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


--------------------------------------------------------------------------------
         THE FOLLOWING ABBREVIATIONS ARE USED IN PORTFOLIO DESCRIPTIONS:
               AMBAC - American Municipal Bond Assurance Corporation
          CONNIE LEE - College Construction Loan Insurance Association
                 FSA - Financial Security Assurance
                MBIA - Municipal Bond Insurance Association
--------------------------------------------------------------------------------

                       See Notes to Financial Statements.

                                       6
<PAGE>


--------------------------------------------------------------------------------
THE BLACKROCK NEW JERSEY INVESTMENT
QUALITY MUNICIPAL TRUST INC.
STATEMENT OF ASSETS AND LIABILITIES
APRIL 30, 2000 (Unaudited)
--------------------------------------------------------------------------------

ASSETS
Investments, at value (cost $20,107,211) (Note 1) ..............    $20,713,614
Cash ...........................................................         90,901
Interest receivable ............................................        393,536
                                                                    -----------
                                                                     21,198,051
                                                                    -----------
LIABILITIES
Dividends payable-common stock .................................         61,332
Investment advisory fee payable (Note 2) .......................          6,135
Dividends payable-preferred stock ..............................          4,725
Administration fee payable (Note 2) ............................          1,753
Other accrued expenses .........................................         20,814
                                                                    -----------
                                                                         94,759
                                                                    -----------
NET INVESTMENT ASSETS ..........................................    $21,103,292
                                                                    ===========
Net investment assets were comprised of:
 Common stock:
  Par value (Note 4) ...........................................         10,071
  Paid-in capital in excess of par .............................     13,907,459
 Preferred stock (Note 4) ......................................      7,500,000
                                                                    -----------
                                                                     21,417,530
 Undistributed net investment income ...........................        188,516
 Accumulated net realized loss .................................     (1,109,157)
 Net unrealized appreciation ...................................        606,403
                                                                    -----------
Net investment assets, April 30, 2000 ..........................    $21,103,292
                                                                    ===========
Net assets applicable to common shareholders ...................    $13,603,292
                                                                    ===========
Net asset value per share:
 ($13,603,292 \d 1,007,093 shares of common
 stock issued and outstanding) .................................         $13.51
                                                                         ======

--------------------------------------------------------------------------------
THE BLACKROCK NEW JERSEY INVESTMENT
QUALITY MUNICIPAL TRUST INC.
STATEMENT OF OPERATIONS
SIX MONTHS ENDED APRIL 30, 2000 (Unaudited)
--------------------------------------------------------------------------------

NET INVESTMENT INCOME

Income
  Interest and discount earned .................................      $ 598,932
                                                                      ---------

Expenses
  Investment advisory ..........................................         36,889
  Administration ...............................................         10,540
  Auction Agent ................................................         10,000
  Directors ....................................................          6,000
  Reports to shareholders ......................................          6,000
  Transfer agent ...............................................          5,500
  Independent accountants ......................................          3,500
  Legal ........................................................          2,500
  Custodian ....................................................          1,500
  Miscellaneous ................................................          7,610
                                                                      ---------
  Total expenses ...............................................         90,039
                                                                      ---------
Net investment income ..........................................        508,893
                                                                      ---------


REALIZED AND UNREALIZED GAIN (LOSS)
ON INVESTMENTS (NOTE 3)
Net realized loss on investments ...............................       (228,282)
Net change in unrealized appreciation
 on investments ................................................        197,546
                                                                      ---------
Net loss on investments ........................................        (30,736)
                                                                      ---------

NET INCREASE IN NET INVESTMENT ASSETS
RESULTING FROM OPERATIONS ......................................      $ 478,157
                                                                      =========


                       See Notes to Financial Statements.

                                       7
<PAGE>

--------------------------------------------------------------------------------
THE BLACKROCK NEW JERSEY INVESTMENT QUALITY MUNICIPAL TRUST INC.
STATEMENTS OF CHANGES IN NET INVESTMENT ASSETS (Unaudited)
--------------------------------------------------------------------------------

                                                 SIX MONTHS ENDED   YEAR ENDED
                                                     APRIL 30,      OCTOBER 31,
                                                       2000            1999
                                                   -----------     -----------
INCREASE (DECREASE) IN NET INVESTMENT ASSETS
OPERATIONS:
 Net investment income .........................   $   508,893     $ 1,009,418
 Net realized gain (loss) on investments .......      (228,282)        118,835
 Net change in unrealized appreciation
  on investments ...............................       197,546      (1,595,512)
                                                   -----------     -----------
 Net increase (decrease) in net investment
  assets resulting from operations .............       478,157        (467,259)

DIVIDENDS:
 To common shareholders from net
  investment income ............................      (367,942)       (735,877)
 To preferred shareholders from net
  investment income ............................      (126,450)       (231,867)
                                                   -----------     -----------
 Total dividends ...............................      (494,392)       (967,744)
                                                   -----------     -----------
  Total decrease ...............................       (16,235)     (1,435,003)
                                                   -----------     -----------
NET INVESTMENT ASSETS
Beginning of period ............................    21,119,527      22,554,530
                                                   -----------     -----------
End of period (including undistributed
 net investment income of $188,516 and
 $174,015, respectively) .......................   $21,103,292     $21,119,527
                                                   ===========     ===========

                       See Notes to Financial Statements.

                                       8
<PAGE>

--------------------------------------------------------------------------------
THE BLACKROCK NEW JERSEY INVESTMENT QUALITY MUNICIPAL TRUST INC.
FINANCIAL HIGHLIGHTS (Unaudited)
--------------------------------------------------------------------------------

<TABLE>
<CAPTION>
                                                       SIX MONTHS ENDED                     YEAR ENDED OCTOBER 31,
                                                            APRIL 30,      -------------------------------------------------------
                                                              2000           1999        1998        1997        1996        1995
                                                            -------        -------     -------     -------     -------     -------
<S>                                                         <C>            <C>         <C>         <C>         <C>         <C>
PER COMMON SHARE OPERATING PERFORMANCE:
Net asset value, beginning of period ....................   $ 13.52        $ 14.95     $ 14.19     $ 13.48     $ 13.46     $ 11.44
                                                            -------        -------     -------     -------     -------     -------
 Net investment income ..................................       .51           1.00        1.00         .99         .99         .99
 Net realized and unrealized gain (loss)
  on investments ........................................      (.03)         (1.47)        .71         .66         .01        2.09
                                                            -------        -------     -------     -------     -------     -------
Net increase (decrease) from investment
  operations ............................................       .48           (.47)       1.71        1.65        1.00        3.08
                                                            -------        -------     -------     -------     -------     -------
Dividends and distributions:
 Dividends from net investment income to:
   Common shareholders ..................................      (.37)          (.73)       (.71)       (.69)       (.71)       (.77)
   Preferred shareholders ...............................      (.12)          (.23)       (.24)       (.25)       (.26)       (.29)
 Distributions in excess of net realized
  gain on investments to:
   Common shareholders ..................................        --             --          --          **        (.01)         --
   Preferred shareholders ...............................        --             --          --          **          **          --
                                                            -------        -------     -------     -------     -------     -------
Total dividends and distributions .......................      (.49)          (.96)       (.95)       (.94)       (.98)      (1.06)
                                                            -------        -------     -------     -------     -------     -------
Net asset value, end of period* .........................   $ 13.51        $ 13.52     $ 14.95     $ 14.19     $ 13.48     $ 13.46
                                                            =======        =======     =======     =======     =======     =======
Per share market value, end of period* ..................   $11.625        $ 12.25     $14.125     $12.875     $11.875     $ 11.75
                                                            =======        =======     =======     =======     =======     =======
TOTAL INVESTMENT RETURN+ ................................     (2.17)%        (8.77)%     15.56%      14.77%       6.26%      18.37%
RATIOS TO AVERAGE NET ASSETS OF COMMON
SHAREHOLDERS
Expenses++ ..............................................      1.33%+++       1.29%       1.35%       1.48%       1.57%       1.55%
Net investment income before preferred
 stock dividends++ ......................................      7.54%+++       6.94%       6.88%       7.28%       7.37%       7.89%
Preferred stock dividends ...............................      1.87%+++       1.59%       1.68%       1.85%       1.92%       2.28%
Net investment income available to
 common shareholders ....................................      5.67%+++       5.35%       5.20%       5.43%       5.45%       5.61%
SUPPLEMENTAL DATA:
Average net assets of common shareholders
 (in thousands) .........................................   $13,578        $14,550     $14,663     $13,761     $13,408     $12,580
Portfolio turnover ......................................        23%            17%          0%          0%         85%        163%
Net assets of common shareholders, end of
 period (in thousands) ..................................   $13,603        $13,620     $15,055     $14,294     $13,574     $13,556
Asset coverage per share of preferred
 stock, end of period ...................................   $70,360        $70,409     $75,191     $72,654     $70,252     $70,188
Preferred stock outstanding (in thousands) ..............   $ 7,500        $ 7,500     $ 7,500     $ 7,500     $ 7,500     $ 7,500
</TABLE>

----------

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

**   Actual  amount paid to common  shareholders  for the year ended October 31,
     1997 was  $0.00015  per share,  and the  actual  amount  paid to  preferred
     shareholders was $0.00005 per common share. Actual amount paid to preferred
     shareholders  for the year ended  October  31,  1996 was $0.0029 per common
     share.

+    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.
     This calculation does not reflect brokerage  commissions.  Total investment
     return for a period less than one full year is not annualized.

++   Ratios are  calculated  on the basis of income and expenses  applicable  to
     both the common and preferred  shares relative to the average net assets of
     common 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 the Trust's common shares.

                       See Notes to Financial Statements.

                                       9
<PAGE>

--------------------------------------------------------------------------------
THE BLACKROCK NEW JERSEY INVESTMENT
QUALITY MUNICIPAL TRUST INC.
NOTES TO FINANCIAL STATEMENTS (Umaudited)
--------------------------------------------------------------------------------

NOTE 1. ORGANIZATION & ACCOUNTING POLICIES

The BlackRock New Jersey  Investment  Quality Municipal Trust Inc. (the "Trust")
was  organized  in Maryland on April 12, 1993 as a  non-diversified,  closed-end
management  investment company.  The Trust's investment objective is to manage a
portfolio of investment  quality  securities while providing high current income
exempt from regular  federal and New Jersey state income tax consistent with the
preservation  of capital.  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. 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.

     Short-term  securities  which  mature  in 60  days or less  are  valued  at
amortized  cost,  if their term to maturity  from date of purchase is 60 days or
less.  Short-term  securities with a term to maturity  greater than 60 days from
date of  purchase  are valued at current  market  quotations  until  maturity or
disposition.

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  accretes  original issue discounts or amortizes
premium 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 generally
accepted  accounting  principles  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 Prudential Investments Fund
Management LLC ("PIFM"),  a wholly-owned  subsidiary of The Prudential Insurance
Company of America.

     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. The

                                       10
<PAGE>


administration  fee  paid to PIFM 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.  PIFM pays occupancy and certain clerical
and accounting costs of the Trust. The Trust bears all other costs and expenses.

NOTE 3. PORTFOLIO SECURITIES

Purchases and sales of investment securities, other than short-term investments,
for the period  ended  April 30,  2000  aggregated  $4,868,560  and  $4,808,106,
respectively.

     The federal  income tax basis of the Trust's  investments at April 30, 2000
was  $20,111,752  and,  accordingly,  net unrealized  appreciation  was $601,862
(gross unrealized appreciation-$621,502, gross unrealized depreciation-$19,640).

     For federal income tax purposes,  the Trust had a capital loss carryforward
at October 31, 1999 of  approximately  $876,000 of which $589,000 will expire in
2002, $281,000 will expire in 2003 and $6,000 will expire in 2004.  Accordingly,
no capital gains  distribution is expected to be paid to shareholders  until net
gains have been realized in excess of such amount.

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 1,007,093  common shares  outstanding at
April 30, 2000, the Advisor owned 7,093 shares. As of April 30, 2000, there were
300 shares of Preferred Stock Series T7 outstanding.

     Dividends on Series T7 are cumulative at a rate which is reset every 7 days
based on the results of an auction.  Dividend  rates  ranged from 3.00% to 4.60%
during the six months ended April 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

Subsequent  to April 30, 2000,  the Board of  Directors of the Trust  declared a
dividend from undistributed earnings of $0.0609 per common share payable June 1,
2000 to shareholders of record on May 15, 2000.

     For the period May 1, 2000 to May 31, 2000 dividends  declared on Preferred
Stock totalled $29,210 in aggregate for the outstanding Preferred Stock.

                                       11
<PAGE>


--------------------------------------------------------------------------------
        THE BLACKROCK NEW JERSEY INVESTMENT QUALITY MUNICIPAL TRUST INC.
                           DIVIDEND REINVESTMENT PLAN
--------------------------------------------------------------------------------

     Pursuant  to  the  Trust's   Dividend   Reinvestment   Plan  (the  "Plan"),
shareholders are  automatically  enrolled 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 elect not to
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 American
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 NEW JERSEY INVESTMENT QUALITY MUNICIPAL 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 three Directors as follows:

          DIRECTOR                               CLASS     TERM       EXPIRING
          --------                               -----     ----       --------
          Andrew F. Brimmer ..................    III     3 years       2003
          Kent Dixon .........................    III     3 years       2003
          Laurence D. Fink ...................    III     3 years       2003

          Directors  whose term of office  continues  beyond  this  meeting  are
          Richard E. Cavanagh,  Frank J. Fabozzi,  James Clayburn La Force, Jr.,
          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 October 31, 2000.

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

                                                 VOTES     VOTES
                                                  FOR     AGAINST    ABSTENTIONS
                                                  ---     -------    -----------
     Andrew F. Brimmer .......................  869,568      -          4,534
     Kent Dixon ..............................  874,582      -          9,520
     Laurence D. Fink ........................  874,582      -          9,520
     Ratification of Deloitte & Touche LLP ...  874,817    7,013        2,272

                                       13
<PAGE>


--------------------------------------------------------------------------------
        THE BLACKROCK NEW JERSEY INVESTMENT QUALITY MUNICIPAL TRUST INC.
                              INVESTMENT SUMMARY
--------------------------------------------------------------------------------

THE TRUST'S INVESTMENT OBJECTIVE

The  BlackRock  New  Jersey  Investment  Quality  Municipal  Trust's  investment
objective  is  to provide high current income exempt from regular federal income
tax  and  New  Jersey  State  income  tax  consistent  with  the preservation of
capital.

WHO MANAGES THE TRUST?

BlackRock  Advisors,  Inc.  (the  "Advisor")  is  an  SEC-registered  investment
advisor.  As  of  March  31,  2000,  the  Advisor  and its affiliates (together,
"BlackRock")  managed  $173  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 $29 billion family of open-end funds.
BlackRock  manages  over  590  accounts,  domiciled  in  the  United  States and
overseas.

WHAT CAN THE TRUST INVEST IN?

Under  normal  conditions, the Trust expects to continue to manage its assets so
that  at least 80% of its investments are rated at least investment grade ("BBB"
by  Standard  &  Poor's  or "Baa" by Moody's Investor Services) and up to 20% of
its  assets  may  instead  be  deemed  to be of equivalent credit quality by the
Adviser.  The  Trust  intends  to  invest  substantially  all of the assets in a
portfolio  of  investment  grade New Jersey Municipal Obligations, which include
debt   obligations  issued  by  or  on  behalf  of  New  Jersey,  its  political
subdivisions,  agencies  and  instrumentalities  and by other qualifying issuers
that  pay  interest  which, in the opinion of the bond counsel of the issuer, is
exempt  from  regular  federal  income  tax and New Jersey State income tax. New
Jersey  Municipal  Obligations  are  issued  to  obtain funds for various public
functions,  including  the construction of public facilities, the refinancing of
outstanding  obligations,  the obtaining of funds for general operating expenses
and for loans to other public institutions and facilities.

WHAT IS THE ADVISOR'S INVESTMENT STRATEGY?

The  Advisor  will manage the assets of the Trust in accordance with the Trust's
investment  objective and policies to seek to achieve its objective by investing
in  investment  grade  New  Jersey  Municipal  Obligations  or  other qualifying
issuers.  The  Advisor  actively  manages  the  assets  in  relation  to  market
conditions   and  interest  rate  changes.  Depending  on  yield  and  portfolio
allocation  considerations,  the  Advisor  may choose to invest a portion of the
Trust's  assets  in  securities  which  pay  interest  that  is  subject  to AMT
(alternative  minimum  tax).  The  Trust intends to emphasize investments in New
Jersey  Municipal  Obligations with long-term maturities and expects to maintain
an  average  portfolio  maturity of 15-20 years, but the average maturity may be
shortened or lengthened from time to time depending on market conditions.

Under  current market conditions the use of leverage increases the income earned
by  the  Trust.  The  Trust  employs  leverage primarily through the issuance of
preferred   stock.  Preferred  stockholders  will  receive  dividends  based  on
short-term  rates  in  exchange  for  allowing  the  Trust  to borrow additional
assets.  These  assets  will  be  invested in longer-term assets which typically
offer  higher  interest  rates  and  the  difference  between  the  cost  of the
dividends  paid  to  preferred  stockholders  and  the  interest  earned  on the
longer-term   securities   will   provide   higher   income  levels  for  common
stockholders  in  most  interest rate environments. See "Leverage Considerations
in the Trust" below.

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

The  Trust's  shares  are  traded  on the American 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 fund 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 THE TRUST

Leverage  increases  the  duration  (or price sensitivity of the net assets with
respect  to  changes  in  interest  rates)  of  the Trust, which can improve the
performance  of  the  Trust  in  a declining rate environment, but can cause net
assets  to  decline  faster  in  a rapidly rising interest rate environment. 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 Trust. The Advisor's
portfolio  managers continuously monitor and regularly review the Trust's use of
leverage  and  maintain  the  ability  to  unwind the leverage if that course is
chosen.

SPECIAL CONSIDERATIONS AND RISK FACTORS RELEVANT TO THE TRUST

The  Trust  is  intended  to  be  a long-term investment and is not a short-term
trading vehicle.

INVESTMENT  OBJECTIVE. Although  the  objective  of the Trust is to provide high
current  income  exempt  from  regular  federal  income tax and New Jersey State
income  tax  consistent  with  the  preservation  of  capital,  there  can be no
assurance that this objective will be achieved.

DIVIDEND  CONSIDERATIONS. The  income and dividends paid by the Trust are likely
to  vary  over  time  as fixed income market conditions change. Future dividends
may be higher or lower than the dividend the Trust is currently paying.

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 American Stock Exchange (AMEX symbol: RNJ) 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.

INVESTMENT  GRADE  MUNICIPAL OBLIGATIONS. 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.

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. These securities involve 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.

                                       15
<PAGE>


--------------------------------------------------------------------------------
        THE BLACKROCK NEW JERSEY INVESTMENT QUALITY MUNICIPAL 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 the  deduction  of
                         expenses.  This Trust  declares  and pays  dividends to
                         common shareholders on a monthly basis.

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

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   investments,   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.

PREREFUNDED BONDS:       These securities are collateralized by U.S.  Government
                         securities which are held in escrow and are used to pay
                         principal  and  interest  on the tax  exempt  issue and
                         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
                                                                SYMBOL    DATE
PERPETUAL TRUSTS                                                ------  --------
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
                                                                SYMBOL    DATE
PERPETUAL TRUSTS                                                ------  --------
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

         IF YOU WOULD LIKE FURTHER INFORMATION PLEASE CALL BLACKROCK AT
          (800) 227-7BFM (7236) OR CONSULT WITH YOUR FINANCIAL ADVISOR.

                                       17
<PAGE>


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

     BlackRock  Advisors,  Inc. (the "Advisor") is an SEC-registered  investment
advisor.  As of March  31,  2000,  the  Advisor  and its  affiliates  (together,
"BlackRock")  managed $173 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 $29 billion family of open-end  funds.
BlackRock  manages  over  590  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
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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 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
Prudential Investments Fund Management LLC
Gateway Center Three
100 Mulberry Street
Newark, NJ 07102-4077

CUSTODIAN AND TRANSFER AGENT
State Street Bank and Trust Company
One Heritage Drive
North Quincy, MA 02171
(800) 699-1BFM

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

INDEPENDENT ACCOUNTANTS
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 April 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 NEW JERSEY INVESTMENT
                          QUALITY MUNICIPAL TRUST INC.
                c/o Prudential Investments Fund Management LLC
                              Gateway Center Three
                              100 Mulberry Street
                             Newark, NJ 07102-4077
                                 (800) 227-7BFM


[RECYCLE LOGO] Printed on recycled paper                             09247C-10-7
                                                                     09247C-20-6

     ---------
     BlackRock
THE  ---------
NEW JERSEY
INVESTMENT QUALITY
MUNICIPAL TRUST INC.
----------------------------------------------------------------------------
SEMI-ANNUAL REPORT
APRIL 30, 2000



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