BLACKROCK FLORIDA INVESTMENT QUALITY MUNICIPAL TRUST
N-30D, 1997-06-30
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- --------------------------------------------------------------------------------
          THE BLACKROCK FLORIDA INVESTMENT QUALITY MUNICIPAL TRUST INC.
                       SEMI-ANNUAL REPORT TO SHAREHOLDERS
                          REPORT OF INVESTMENT ADVISER
- --------------------------------------------------------------------------------


                                                                   May 30, 1997



Dear Trust Shareholder:
      Domestic bond investors have experienced higher interest rates in the face
of a  resilient  stock  market and  stronger  economic  growth over the past six
months.  However,  as a  pre-emptive  strike at inflation,  the Federal  Reserve
raised the  Federal  funds  target  rate  one-quarter  of a point at their March
policy meeting.

      BlackRock expects that both production and consumption will continue to be
strong in the coming months.  However,  the combined  effects of higher interest
rates and already  rising  consumer debt should lead to more  moderate  economic
growth  later  in 1997.  Despite  inflation  remaining  relatively  low,  strong
consumer  confidence and robust  industrial  activity suggest that the potential
for future inflation exists. Therefore, BlackRock currently maintains a cautious
fundamental  outlook  for  bonds.  While we believe  that one or two  additional
interest  rate  increases by the Fed may still be  necessary to temper  economic
growth,  it does not appear that 1997 will be a repeat of the  dramatic  rise in
short term interest rates that the market witnessed in 1994.

      This report  provides the Trust's  portfolio  managers an  opportunity  to
provide you with  detailed  market  commentary  and review the major themes that
have occurred in the portfolio  over the past six months.  We hope that you find
this report  informative and look forward to serving your financial needs in the
future.


Sincerely,



/s/Laurence D. Fink                                     /s/Ralph L. Schlosstein
- -------------------                                     -----------------------
Laurence D. Fink                                        Ralph L. Schlosstein
Chairman                                                President


                                       1
<PAGE>


                                                                   May 30, 1997


Dear Shareholder:

      We are pleased to present the semi-annual report for The BlackRock Florida
Investment  Quality Municipal Trust ("the Trust") for the six months ended April
30, 1997.  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 "RFA".
The Trust's  investment  objective  is to provide  high  current  income that is
exempt from both  regular  federal  income tax and Florida  intangible  personal
property tax 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  Florida,  and  certain  territories  and
possessions of the United States.

      The table below  summarizes the performance of the Trust's stock price and
net asset value over the period:

- -------------------------------------------------------------------------------
                         4/30/97    10/31/96   CHANGE     HIGH        LOW
- -------------------------------------------------------------------------------
STOCK PRICE              $12.75     $12.25      4.08%   $13.125     $12.00
- -------------------------------------------------------------------------------
NET ASSET VALUE (NAV)    $13.96     $14.15     (1.34%)  $14.46      $13.70
- -------------------------------------------------------------------------------


THE FIXED INCOME MARKETS

      Stronger  economic  data and  accompanying  inflation  fears  caused  U.S.
Treasury yields to rise during the six month period between November 1, 1996 and
April 30, 1997. After reaching their lowest levels since March of 1996, Treasury
yields began rising in December after Federal Reserve  Chairman Alan Greenspan's
commentary  on  "irrational  exuberance"  in  the  financial  markets.  Although
inflationary  measures such as commodity,  producer and consumer prices remained
relatively  stable,  tight labor markets and strong consumer  confidence led the
Federal  Reserve to raise the Federal  funds rate by 25 basis  points  (1/4%) at
their March 25, 1997 monetary policy meeting to  pre-emptively  fight inflation.
Hints  of  moderating   economic  growth  during  April  proved  to  be  a  more
accommodating  environment for bonds, as Treasury yields fell towards  month-end
in  response  to a  strong  dollar,  rising  stock  market  and  optimism  for a
balanced-budget agreement.

      For the six month  period,  the yield of the  10-year  Treasury  note rose
0.37% to end April 1997 at 6.71%. However, the 10-year's yield reached a high of
6.98%  in  mid-April  before  falling  the last  two  weeks of the  month as the
likelihood  for another  interest  rate hike by the  Federal  Reserve at the May
meeting decreased. The 10-year municipal general obligation's yield rose only 15
basis points to end the period at 5.05%.

      Florida's economy  continues to diversify from its  service-based  origins
and is growing  relative  to its region and the United  States as a whole.  Both
Florida's  population  and work  force  have  been  rapidly  growing.  Florida's
employment  expanded  through the recession  earlier in the decade and increased
10% between 1992-1996;  further,  since 1980 Florida's  population has increased
nearly 50%, bringing the total population to 14.4 million, the 4th largest total
in the U.S. These positive  economic factors helped spur an upgrade in Florida's
bond rating from AAto AA+ by Standard &Poor's since April 1997.

      Municipal bonds outperformed their taxable  counterparts over the past six
months, with longer maturity municipals generally outperforming shorter maturity
issues.  The municipal market, as measured by the Lehman Brothers Municipal Bond
Index,  posted a 2.01% total return from  November 1, 1996 through April 1997 as

                                       2
<PAGE>


compared  against  the Lehman  Aggregate  Index's  return of 1.71% over the same
period.  Investor  demand for longer  dated  municipal  issues was  particularly
pronounced during the first quarter of 1997, in part because of a 10% decline in
new issuance due to a higher  interest rate  environment.  Additionally,  rising
interest rates created  increased demand from fixed income  investors  searching
for attractive  after-tax yields and as a potential  shelter from the volatility
of the equity markets.

      Looking ahead,  BlackRock  will seek to take advantage of potential  price
weakness in short and  intermediate  maturity  municipals.  We believe  that new
municipal  supply will remain low and that strong investor demand should provide
a favorable environment for municipal bonds in the coming months.


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 at about 35% of total assets to
enhance its income by borrowing at short term municipal  rates and investing the
proceeds in longer maturity issues which 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.

      The  Trust  has  been  emphasizing  premium  callable  bonds,  which  have
performed  extremely  well as market  demand  has  increased  for  bonds  with a
defensive structure. As a result of their strong performance, the Trust may seek
to reduce its exposure to premiums and reallocate into par bonds.  Additionally,
the Trust is  currently  seeking  opportunities  to reduce its exposure to lower
rated  investment  grade  credits  (BBBand  A),  as the yield  differential  (or
"spread")  between  lower and higher  rated  credits has  narrowed.  Due to this
narrowing of credit  spreads,  which reduces the amount of extra yield investors
receive by buying a lower rated credit,  the Trust now favors moving into higher
credit bonds because of the relatively small yield give-up.

      The  following  charts  compare the  Trust's  current and October 31, 1996
asset composition and credit quality allocations:

                                SECTOR BREAKDOWN
- -------------------------------------------------------------------------------
            SECTOR                          APRIL 30, 1997     OCTOBER 31, 1996
- -------------------------------------------------------------------------------
        Lease Revenue                           19%                 15%
- -------------------------------------------------------------------------------
        Transportation                          17%                 17%
- -------------------------------------------------------------------------------
        Power                                   17%                 13%
- -------------------------------------------------------------------------------
        City, County & State                    13%                 17%
- -------------------------------------------------------------------------------
        Miscellaneous Revenue                    8%                 10%
- -------------------------------------------------------------------------------
        Sales Tax                                6%                  4%
- -------------------------------------------------------------------------------
        Water & Sewer                            4%                  5%
- -------------------------------------------------------------------------------
        Hospital                                 4%                  4%
- -------------------------------------------------------------------------------
        Housing                                  4%                  4%
- -------------------------------------------------------------------------------
        University                               4%                  4%
- -------------------------------------------------------------------------------
        Building                                 4%                  3%
- -------------------------------------------------------------------------------
        Utility                                  --                  4%
- -------------------------------------------------------------------------------

                                       3

<PAGE>


- -------------------------------------------------------------------------------
      STANDARD & POOR'S/MOODY'S/FITCH'S
              CREDIT RATING                APRIL 30 1997       OCTOBER 31, 1996
- -------------------------------------------------------------------------------
                 AAA/Aaa                        54%                   50%
- -------------------------------------------------------------------------------
                  AA/Aa                         17%                   21%
- -------------------------------------------------------------------------------
                   A/A                          16%                   16%
- -------------------------------------------------------------------------------
                 BBB/Baa                        13%                   13%
- -------------------------------------------------------------------------------

      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 Florida
Investment  Quality  Municipal  Trust.  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 yours,



/s/Robert Kapito                         /s/Kevin Klingert
- ----------------                         ---------------------------------------
Robert Kapito                            Kevin Klingert
Vice Chairman and Portfolio Manager      Managing Director and Portfolio Manager
BlackRock Financial Management, Inc.     BlackRock Financial Management, Inc.





- -------------------------------------------------------------------------------
            THE BLACKROCK FLORIDA INVESTMENT QUALITY MUNICIPAL TRUST
- -------------------------------------------------------------------------------
   Symbol on American Stock Exchange:                          RFA
- -------------------------------------------------------------------------------
   Initial Offering Date:                                  May 28, 1993
- -------------------------------------------------------------------------------
   Closing Stock Price as of 4/30/97:                         $12.75
- -------------------------------------------------------------------------------
   Net Asset Value as of 4/30/97:                             $13.96
- -------------------------------------------------------------------------------
   Yield on Closing Stock Price as of 4/30/97 ($12.75)1:       5.65%
- -------------------------------------------------------------------------------
   Current Monthly Distribution per Share2:                    $0.06
- -------------------------------------------------------------------------------
   Current Annualized Distribution per Share2:                 $0.72
- -------------------------------------------------------------------------------

1Yield on Closing Stock Price is  calculated by dividing the current  annualized
 distribution per share by the closing stock price per share.
2The distribution is not constant and is subject to change.

                                       4
<PAGE>

- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
THE BLACKROCK FLORIDA INVESTMENT QUALITY MUNICIPAL TRUST
PORTFOLIO OF INVESTMENTS APRIL 30, 1997 (UNAUDITED)
- ----------------------------------------------------------------------------------------------------------------------
          PRINCIPAL                                                                           OPTION
            AMOUNT                                                                             CALL            VALUE
RATING*     (000)                         DESCRIPTION                                       PROVISIONS+       (NOTE 1)
- -----------------------------------------------------------------------------------------------------------------------
<S>         <C>      <C>                                                                  <C>              <C>       
                     LONG-TERM INVESTMENTS--150.3%
                     FLORIDA--125.1%
                     Boynton Beach Util. Sys. Rev., FGIC,
AAA         $ 170      Prerefunded, 6.25%, 11/01/20,++ ..................................  11/02 at 102    $  179,532
AAA           830      Unrefunded Balance, 6.25%, 11/01/20 ..............................  11/02 at 102       859,531
A1          1,000    Brevard Cnty. Hlth. Facs., Holmes Regl. Med. Ctr., 5.75%, 10/01/13 .  10/03 at 102       989,060
AAA         1,000    Brevard Cnty. Sch. Brd. C.O.P., Ser. B, 5.50%, 7/01/21, AMBAC ......   7/06 at 102       959,940
AAA         1,000    Collier Cnty. Sch. Brd., C.O.P., 5.00%, 2/15/16, FSA ...............   2/06 at 101       911,070
AAA         1,000    Dade Cnty. Aviation Rev., Miami Int'L Arpt., Ser. C, 5.75%, 
                       10/01/25, MBIA ...................................................  10/05 at 102       994,520
AAA         1,000    Dade Cnty. Sch. Brd., C.O.P., Ser. A, 6.00%, 5/01/14, MBIA .........   5/04 at 101     1,019,610
AAA         1,000    Dade Cnty. Spl. Oblig., Ser. B, Zero Coupon, 10/01/14, AMBAC ....... 10/08 at 71.9       354,910
AAA         1,000    First Florida Gov. Fin. Comn. Rev., Gainsville, Hollywood &
                       St. Petersburg, 5.75%, 7/01/16, AMBAC ............................   7/06 at 101       995,210
AAA           895    Florida Hsg. Fin. Agcy., Sngl. Fam. Mtge., Ser. A, 6.25%, 7/01/11 ..   7/04 at 102       920,329
AA          1,000    Florida St. Brd. of Ed., Pub. Ed., Ser. B, 5.875%, 6/01/24 .........   6/05 at 101       999,180
AA          1,000    Florida St. Brd. of Ed., Ser. C, 5.85%, 6/01/18 ....................   6/03 at 101     1,003,190
AAA           500    Florida St. Dept. of Corrections, C.O.P., Okeechobee Correctional 
                       Fac., 6.25%, 3/01/15, AMBAC ......................................   3/05 at 102       524,395
AA+         1,000    Florida St. Dept. of Trans., 5.80%, 7/01/21 ........................   7/05 at 101       990,980
AAA         1,000    Florida St. Div. of Bond Fin. Dept., Gen. Svcs. Rev., Dept. of 
                       Environ. Preservation, Ser. A, 5.75%, 7/01/11, AMBAC .............   7/05 at 101     1,014,300
AAA         1,000    Jacksonville Cap. Impvt. Rev., Gator Bowl Proj., 5.50%, 10/01/14, 
                       AMBAC ............................................................  10/04 at 101       983,290
AAA         1,000    Lee Cnty. Trans. Facs. Rev., 5.75%, 10/01/22, MBIA .................  10/05 at 102       998,680
A           1,000    Orlando & Orange Cnty. Expwy., 5.95%, 7/01/23 ......................   7/01 at 102       996,020
Aa          1,000    Orlando Utils. Comn. Wtr. & Elec. Rev., Ser. D, 5.50%, 10/01/20 ....  10/99 at 100       965,500
AAA         1,000    Seminole Cnty. Sch. Brd., C.O.P., Ser. A, 6.125%, 7/01/14, MBIA ....   7/04 at 102     1,030,800
AAA         1,000    Sunrise Florida Util. Sys. Rev., Ser. A, 5.75%, 10/01/21, AMBAC ....  10/06 at 101       993,490
Baa         1,000    Volusia Cnty. Ed. Fac. Auth. Rev., 6.125%, 10/15/16 ................  10/06 at 102     1,004,010
                                                                                                           ----------
                                                                                                           19,687,547
                                                                                                           ----------
                     PUERTO RICO--25.2%
                     Puerto Rico Elec. Pwr. Auth. Rev.,
BBB+        1,000      Ser. U, 6.00%, 7/01/14 ...........................................   7/04 at 102     1,009,170
BBB+        1,000      Ser. T, 6.375%, 7/01/24 ..........................................   7/04 at 102     1,031,880
                     Puerto Rico Pub. Bldg. Auth., Gtd. Pub. Ed. & Hlth. Facs., Ser. M,
A           1,000      5.50%, 7/01/21 ................................................... 7/03 at 101.5       940,160
A           1,000      5.75%, 7/01/15 ................................................... 7/03 at 101.5       984,270
                                                                                                           ----------
                                                                                                            3,965,480
                                                                                                           ----------
                       Total Long-Term Investments (cost $22,919,367) ...................                  23,653,027
                                                                                                           ----------
 

</TABLE>
                       See Notes to Financial Statements.

                                        5
<PAGE>

- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
THE BLACKROCK FLORIDA INVESTMENT QUALITY MUNICIPAL TRUST
PORTFOLIO OF INVESTMENTSAPRIL 30, 1997 (UNAUDITED)
- ---------------------------------------------------------------------------------------------------------------------------
         PRINCIPAL                                                                              OPTION
          AMOUNT                                                                                 CALL         VALUE
RATING*    (000)                            DESCRIPTION                                       PROVISIONS+   (NOTE 1)
- ---------------------------------------------------------------------------------------------------------------------------
<S>        <C>       <C>                                                                        <C>         <C>
                     SHORT-TERM INVESTMENTS**--1.3%
P1         $ 200     Jackson Cnty. Pollution Control, 3.90%, 5/01/97, FRDD
                       (Cost $200,000)                                                          N/A         $   200,000
                                                                                                            -----------
                     TOTAL INVESTMENTS--151.6% (COST $23,119,367)                                            23,853,027
                     Other assets in excess of liabilities--2.4%                                                378,948
                     Liquidation value of preferred stock--(54.0)%                                           (8,500,000)
                                                                                                            -----------
                     NET ASSETS APPLICABLE TO COMMON SHAREHOLDERS--100%                                     $15,731,975
                                                                                                            ===========

</TABLE>

- --------------------------------------------------------------------------------
         THE FOLLOWING ABBREVIATIONS ARE USED IN PORTFOLIO DESCRIPTIONS:

     AMBAC          -- American Municipal Bond Assurance Corporation    
     C.O.P.         -- Certificate of Participation                     
     FGIC           -- Financial Guaranty Insurance Company             
     F.R.D.D.       -- Floating Rate Daily Demand**
     FSA            -- Financial Security Assurance
     MBIA           -- Municipal Bond Insurance Association
- --------------------------------------------------------------------------------

- -----------
   * Rating: using the higher of Standard & Poor's, Moody's or Fitch's rating.
  ** For  purposes of  amortized  cost  valuation,  the  maturity  date of these
     instruments  is  considered  to be the  later 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  prices  of the earliest
     option call or redemption. There may be other call  provisions  at  varying
     prices at later dates.
  ++ This bond is prerefunded. See Glossary for definitions.



                       See Notes to Financial Statements.

                                       6
<PAGE>

- --------------------------------------------------------------------------------
THE BLACKROCK FLORIDA INVESTMENT
QUALITY MUNICIPAL TRUST
STATEMENT OF ASSETS AND LIABILITIES
APRIL 30, 1997 (UNAUDITED)
- --------------------------------------------------------------------------------


ASSETS

Investments, at value (cost $23,119,367) (Note 1) ....  $23,853,027
Cash .................................................       62,571
Interest receivable ..................................      371,192
Deferred organization expenses and other assets ......        1,922
                                                        -----------
                                                         24,288,712
                                                        -----------

LIABILITIES
Advisory fee payable (Note 2) ........................        6,928
Dividends payable-common stock .......................        5,152
Dividends payable-preferred stock ....................        5,660
Administration fee payable (Note 2) ..................        1,980
Other accrued expenses ...............................       37,017
                                                        -----------
                                                             56,737
                                                        -----------

NET INVESTMENT ASSETS ................................  $24,231,975
                                                        ===========

Net investment assets were comprised of:
  Common stock:
    Par value (Note 4) ...............................     $ 11,271
    Paid-in capital in excess of par .................   15,585,445
  Preferred stock (Note 4) ...........................    8,500,000
                                                        -----------
                                                         24,096,716
  Undistributed net investment income ................       98,047
  Accumulated net realized loss ......................     (696,448)
  Net unrealized appreciation ........................      733,660
                                                        -----------
  Net investment assets, April 30, 1997 ..............  $24,231,975
                                                        ===========

NET ASSETS APPLICABLE TO COMMON SHAREHOLDERS .........  $15,731,975
                                                        ===========

Net asset value per share:
  ($15,731,975 / 1,127,093 shares of
  common stock issued and outstanding) ...............      $13.96
                                                            ======



- --------------------------------------------------------------------------------
THE BLACKROCK FLORIDA INVESTMENT
QUALITY MUNICIPAL TRUST
STATEMENT OF OPERATIONS
SIX MONTHS ENDED APRIL 30, 1997 (UNAUDITED)
- --------------------------------------------------------------------------------


NET INVESTMENT INCOME

Income
  Interest and discount earned ......................    $ 701,279
                                                         ---------

Expenses
  Investment advisory ...............................       42,610
  Auction agent .....................................       11,000
  Administration ....................................       12,175
  Shareholder reports ...............................       10,000
  Directors .........................................        6,000
  Audit .............................................        5,000
  Transfer agent ....................................        4,000
  Legal .............................................        2,000
  Custodian .........................................        1,600
  Miscellaneous .....................................        5,501
                                                         ---------
  Total expenses ....................................       99,886
                                                         ---------
Net investment income ...............................      601,393
                                                         ---------

REALIZED AND UNREALIZED GAIN
ON INVESTMENTS (NOTE 3)
Net realized gain on investments ....................       39,699
Net change in unrealized appreciation/depreciation
  on investments ....................................     (303,074)
                                                         ---------
Net loss on investments .............................     (263,375)
                                                         ---------

NET INCREASE IN NET INVESTMENT
ASSETS RESULTING FROM OPERATIONS ....................    $ 338,018
                                                         =========

                       See Notes to Financial Statements.


                                       7
<PAGE>


- --------------------------------------------------------------------------------
THE BLACKROCK FLORIDA INVESTMENT QUALITY MUNICIPAL TRUST
STATEMENTS OF CHANGES IN NET INVESTMENT ASSETS (UNAUDITED)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>



                                                                                       SIX MONTHS           YEAR
                                                                                          ENDED             ENDED
                                                                                        APRIL 30,        OCTOBER 31,
                                                                                          1997              1996
INCREASE (DECREASE) IN NET INVESTMENT ASSETS                                           ----------        ----------
<S>                                                                                     <C>             <C>        
Operations:
   Net investment income .........................................................    $   601,393       $ 1,163,662
   Net realized gain on investments ..............................................         39,699           106,968
   Net change in unrealized appreciation (depreciation) on investments ...........       (303,074)           42,218
                                                                                      -----------       -----------
   Net increase in net investment assets resulting from operations ...............        338,018         1,312,848

Dividends and distributions:
   To common shareholders from net investment income .............................       (400,846)         (827,678)
   To preferred shareholders from net investment income ..........................       (149,680)         (310,016)
   To common shareholders in excess of net realized gain on investments ..........         (4,875)           (9,017)
   To preferred shareholders in excess of net realized gain on investments .......         (1,819)           (3,394)
                                                                                      -----------       -----------
   Total dividends and distributions .............................................       (557,220)       (1,150,105)
                                                                                      -----------       -----------
     Total (decrease) increase ...................................................       (219,202)          162,743

NET INVESTMENT ASSETS
Beginning of period ..............................................................     24,451,177        24,288,434
                                                                                      -----------       -----------
End of period ....................................................................    $24,231,975       $24,451,177
                                                                                      ===========       ===========

</TABLE>


                       See Notes to Financial Statements.

 
                                        8
<PAGE>

- --------------------------------------------------------------------------------
THE BLACKROCK FLORIDA INVESTMENT QUALITY MUNICIPAL TRUST
FINANCIAL HIGHLIGHTS (UNAUDITED)
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>
                                                                                                           
PER SHARE OPERATING PERFORMANCE:                                                                            FOR THE PERIOD 
                                                            SIX MONTHS    FOR THE YEAR ENDED OCTOBER 31,     JUNE 4, 1993*   
                                                               ENDED      ------------------------------        THROUGH
                                                          APRIL 30, 1997   1996         1995      1994     OCTOBER 31, 1993
                                                           ------------    ----         ----      ----     ----------------
<S>                                                          <C>        <C>          <C>        <C>             <C>    
Net asset value, beginning of period ......................  $ 14.15    $  14.01     $  11.69   $  14.77       $  14.10
                                                             -------    --------     --------   --------       --------
   Net investment income ..................................      .53        1.03         1.05        .98            .31
   Net realized and unrealized gain (loss) on investments .     (.23)        .13          2.36     (3.02)           .86
                                                             -------    --------     --------   --------       --------
   Net increase (decrease) from investment operations .....      .30        1.16         3.41      (2.04)          1.17
                                                             -------    --------     --------   --------       --------
Dividends and distributions:
Dividends from net investment income to:
     Common shareholders ..................................    (.36)        (.73)        (.79)      (.79)          (.20)
     Preferred shareholders ...............................    (.13)        (.28)        (.30)      (.20)          (.05)
Distributions from capital gains to:
     Common shareholders ..................................       --          --           --       (.04)            --
     Preferred shareholders ...............................       --          --           --       (.01)            --
Distributions in excess of net realized gain on 
   investments to:
   Common shareholders ....................................      ***        (.01)          --         --             --
     Preferred shareholders ...............................      ***         ***           --         --             --
                                                             -------    --------     --------   --------       --------
     Total dividends and distributions ....................    (.49)       (1.02)       (1.09)     (1.04)          (.25)
                                                             -------    --------     --------   --------       --------
Capital charge with respect to issuance of common and
     preferred stock ......................................       --          --           --         --           (.25)
                                                             -------    --------     --------   --------       --------
Net asset value, end of period** ..........................  $ 13.96    $  14.15     $  14.01   $  11.69       $  14.77#
                                                             =======    ========     ========   ========       ========
Per share market value, end of period** ...................  $ 12.75    $  12.25     $ 12.625   $ 10.375       $  14.00
                                                             =======    ========     ========   ========       ========
TOTAL INVESTMENT RETURN+: .................................    7.10%       2.92%       29.29%    (20.98%)          .63%
RATIOS TO AVERAGE NET ASSETS OF COMMON SHAREHOLDERS++:
Expenses ..................................................    1.26%+++    1.46%        1.44%      1.50%          1.12%+++
Net investment income before preferred stock dividends ....    7.56%+++    7.41%        7.96%      7.34%          5.40%+++
Preferred stock dividends .................................    1.90%+++    2.00%        2.28%      1.55%          0.80%+++
Net investment income available to common shareholders ....    5.66%+++    5.41%        5.68%      5.79%          4.60%+++
SUPPLEMENTAL DATA:
Average net assets of common shareholders (in thousands) ..  $15,911    $ 15,699     $ 14,759   $ 15,015       $ 15,791
Portfolio turnover rate ...................................       5%         73%         112%       206%            13%
Net assets of common shareholders, end of period 
   (in thousands) .........................................  $15,732    $ 15,951     $ 15,788   $ 13,174       $ 16,644
Asset coverage per share of preferred stock, end of 
   period## ...............................................  $71,287    $ 71,915     $ 71,437   $127,494       $147,907
Preferred stock outstanding (in thousands) ................  $ 8,500    $  8,500     $  8,500   $  8,500       $  8,500

</TABLE>
- -----------------
   * Commencement of investment operations.
  ** Net asset value and market value are  published in THE WALL STREET  JOURNAL
     each Monday.
 *** Distributions  to Common  shareholders  for the six months  ended April 30,
     1997 was  $0.0043  per  common  share  and  $0.0016  per  preferred  share.
     Distribution for 1996 to Common  shareholders was $0.0030 per common share.
     Actual amount paid to preferred shareholders for the year ended October 31,
     1996 was $0.0030 per common share.
   # Net asset value  immediately after the closing of the first public offering
     was $14.01. ## A stock split occurred on July 24, 1995 (Note 4).
   + Total investment  return is calculated  assuming a purchase of common stock
     at the  current  market  value on the first  day and a sale at the  current
     market  price  on the  last  day of each  period  reported.  Dividends  and
     distributions 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
     returns for periods of less than one year are not annualized.
  ++ Ratios are calculated on the basis of income,  expenses and preferred stock
     dividends  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 FLORIDA INVESTMENT
QUALITY MUNICIPAL TRUST
NOTES TO FINANCIAL STATEMENTS
(UNAUDITED)
- --------------------------------------------------------------------------------

NOTE 1. ACCOUNTING            The BlackRock Florida Investment Quality Municipal
POLICIES                      Trust (the "Trust") was organized in Massachusetts
                              on  April  15,  1993 as a  non-diversified closed-
end management  investment company.  The Trust had no transactions until May 27,
1993 when it sold  7,093  shares  of common  stock  for  $100,012  to  BlackRock
Financial Management, Inc., (the "Adviser").  Investment operations commenced on
June 4, 1993.

   The Trust's  investment  objective is to provide high current  income  exempt
from regular  federal income tax and Florida  intangible  personal  property 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  a  pricing  service  which  uses   information   with  respect  to
transactions  in bonds,  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 more than 60 days are valued at current
market  quotations.  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, or by amortizing their value on the 61st day prior to maturity, if
their  original  term to  maturity  from  date of  purchase  exceeded  60  days.

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: For federal income tax purposes, the Trust is treated as a
separate taxpaying entity. It is the intent of the Trust to continue to meet the
requirements  of the Internal  Revenue Code  applicable to regulated  investment
companies  and to  distribute  all of its 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. 

DEFERRED  ORGANIZATION  EXPENSES:  A total of $16,000 was incurred in connection
with the organization of the Trust. These costs have been deferred and are being
amortized  ratably  over a period  of  sixty  months  from  the  date the  Trust
commenced  investment  operations.   

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.  

NOTE 2. AGREEMENTS            The Trust has  an  Investment  Advisory  Agreement
                              with  BlackRock  Financial  Management,  Inc. (the
                              "Adviser"),  a  wholly-owned  corporate subsidiary
of  PNCAsset  Management  Group,  Inc.,  the  holding  company  for PNC's  asset
management   businesses  and  an   Administration   Agreement  with   Prudential
Investments Fund Management LLC ("PIFM"), an indirect,  wholly-owned  subsidiary
of The Prudential Insurance Company of America.

   The investment fee paid to the Adviser is computed weekly and payable monthly
at an annual rate of 0.35% of the Trust's average weekly net investment  assets.
The  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 Adviser provides  continuous  supervision of
the investment  portfolio and pays the compensation of officers of the Trust who
are affiliated persons of the Adviser.  PIFM pays occupancy and certain clerical
and accounting costs of the Trust. The Trust bears all other costs and expenses.

                                       10
<PAGE>


NOTE 3. PORTFOLIO             Purchases  and  sales  of  investment  securities,
SECURITIES                    other  than  short-term  investments,  for the six
                              months ended April 30, 1997 aggregated  $1,159,830
                              and $1,222,064, respectively.

   The federal income tax basis of the Trust's investments at April 30, 1997 was
substantially the same as for financial reporting purposes and, accordingly, net
unrealized  appreciation  for federal  income tax purposes  was $733,660  (gross
unrealized appreciation $771,304 gross unrealized depreciation $37,644).

   For federal income tax purposes, the Trust had a capital loss carryforward at
October  31,  1996  of  approximately   $739,000  which  will  expire  in  2002.
Accordingly, no capital gain 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.  Of the 1,127,093 shares
                              outstanding at  April 30, 1997, the  Adviser owned
7,093 shares. As of April 30, 1997 there were  340  shares  at  Preferred  Stock
Series R7 outstanding.

   The Trust may classify or reclassify any unissued shares of common stock into
one or more series of preferred  stock. On July 29, 1993 the Trust  reclassified
170 shares of common stock and issued a series of Auction Market Preferred Stock
("Preferred  Stock") Series R7. The Preferred  Stock had a liquidation  value of
$50,000 per share plus any  accumulated  but unpaid  dividends.  On May 16, 1995
shareholders approved a proposal to split each share of the Trust's Auction Rate
Municipal Preferred Stock into two shares and simultaneously reduce each share's
liquidation preference from $50,000 to $25,000. The stock split occurred on July
24, 1995.

   Dividends on Series R7 are  cumulative  at a rate which is reset every 7 days
based on the results of an auction.  Dividend  rates  ranged from 3.35% to 4.60%
during the six months ended April 30, 1997.

   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 shares, voting separately as a class would be required to
(a) adopt any plan of  reorganization  that would adversely affect the preferred
shares 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,  1997,  the  Board  of
                              Directors  of  the  Trust  declared dividends from
                              undistributed   earnings  of  $0.0600  per  common
share payable  May 30, 1997 to shareholders of record on May 15, 1997.

   For the  period  May 1, 1997  through  May 31,  1997  dividends  declared  on
Preferred  Stock  totalled  $27,836 in aggregate for the  outstanding  Preferred
Stock.

                                       11

<PAGE>

- --------------------------------------------------------------------------------
            THE BLACKROCK FLORIDA INVESTMENT QUALITY MUNICIPAL TRUST
                           DIVIDEND REINVESTMENT PLAN
- --------------------------------------------------------------------------------

      Pursuant  to  the  Trust's  Dividend   Reinvestment   Plan  (the  "Plan"),
shareholders will  automatically 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  unless an election is made to receive  such
amounts in cash.  The Plan Agent will affect  purchases of shares under the Plan
in the open market.  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 trasfer  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 in connection with 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,  state or local income taxes that
may be payable on such dividends or distributions.
      Experience  under  the Plan  may  indicate  that  changes  are  desirable.
Accordingly,  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 by the Plan
Agent upon at least 90 days' written  notice to all  shareholders  of the Trust.
The Plan may be  terminated by the Plan Agent or the Trust upon at least 30 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  addresses
are on the front of this report.


- --------------------------------------------------------------------------------
                             ADDITIONAL INFORMATION
- --------------------------------------------------------------------------------
      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 April 15, 1997 to vote
      on the  following  matters: 
 
   (1)To elect the following  four  Directors to
      serve as follows:

         DIRECTOR                    CLASS          TERM              EXPIRING
         -------                     -----          ----              -------
         Andrew F. Brimmer ........   III           3 years             2000
         Kent Dixon ...............   III           3 years             2000
         Laurence D. Fink .........   III           3 years             2000
         Walter F. Mondale ........   II            3 years             2000

Directors  whose term of office  continues  beyond  this  meeting are Richard E.
Cavanagh,  Frank J. Fabozzi,  James Grosfeld,  James Clayburn  LaForce,  Jr. 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, 1997.

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

                                  VOTES FOR       VOTES AGAINST     ABSTENTIONS
                                  ---------       -------------     -----------
         Andrew F. Brimmer ........ 829,364              0             10,430
         Kent Dixon ............... 829,364              0             10,430
         Laurence D. Fink ......... 829,364              0             10,430
         Walter F. Mondale ........ 829,364              0             10,430
         Ratification of 
           Deloitte & Touche LLP .. 822,198            8,792            8,804

  
                                       12
<PAGE>

                                   
- --------------------------------------------------------------------------------
            THE BLACKROCK FLORIDA INVESTMENT QUALITY MUNICIPAL TRUST
                               INVESTMENT SUMMARY
- --------------------------------------------------------------------------------

THE TRUST'S INVESTMENT OBJECTIVE

The BlackRock Florida Investment Quality Municipal Trust's investment  objective
is to provide high current income exempt from regular  Federal income tax and to
provide an exemption from Florida intangible  personal property taxes consistent
with the preservation of capital.

WHO MANAGES THE TRUST?

BlackRock  Financial  Management,  Inc.  ("BlackRock"  or the  "Adviser") is the
investment adviser for the Trust.  BlackRock is a registered  investment adviser
specializing in fixed income securities.  Currently,  BlackRock manages over $48
billion of assets  across the  government,  mortgage,  corporate  and  municipal
sectors.  These  assets are managed on behalf of  institutional  and  individual
investors in 21 closed-end funds traded on either the New York or American Stock
Exchanges,  several  open-end  funds and over 100 separate  accounts for various
clients  in the U.S.  and  overseas.  BlackRock  is a  subsidiary  of PNC  Asset
Management  Group  which is a division  of PNC Bank,  N.A.,  one of the  nations
largest banking organizations.

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  investment  grade  ("BBB" by
Standard & Poor's and "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 Florida Municipal  Obligations,  which include debt obligations
issued  by the  State of  Florida,  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  federal  income
tax. Florida 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 ADVISER'S INVESTMENT STRATEGY?

The Adviser 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 Florida Municipal Obligations.  The Adviser actively manages
the assets in relation to market conditions and interest rate changes. Depending
on yield and  portfolio  allocation  considerations,  the  Adviser 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 Florida  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.  The Trust issued  preferred  stock to leverage  the  portfolio at
approximately  35% of total assets.  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 last 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.

                                       13
<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 fund 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 BlackRock
consider that  reduction to be in the best  interests of the Trust.  BlackRock'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 to  provide  an
exemption from Florida  intangible  personal  property taxes 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  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:  RFA) 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.

  
                                     14
<PAGE>

- --------------------------------------------------------------------------------
            THE BLACKROCK FLORIDA INVESTMENT QUALITY MUNICIPAL TRUST
                                    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 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 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 NEW
YORK TIMES or THE WALL STREET JOURNAL each 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.

                                       15
<PAGE>


BLACKROCK

DIRECTORS
Laurence D. Fink, CHAIRMAN
Andrew F. Brimmer
Richard E. Cavanagh
Kent Dixon
Frank J. Fabozzi
James Grosfeld
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 ADVISER
BlackRock Financial Management, Inc.
345 Park Avenue
New York, NY 10154
(800) 227-7BFM

ADMINISTRATOR
Prudential Investments Fund Management LLC
Gateway Center Three
100 Mulberry Street
Newark, N.J. 07102-4077

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

AUCTION  AGENT 
Bankers Trust Company 
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
919 Third Avenue
New York, NY 10022

   The accompanying financial statements as of April 30, 1997 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 FLORIDA INVESTMENT
                             QUALITY MUNICIPAL TRUST
                 c/o Prudential Investments Fund Management LLC
                              Gateway Center Three
                               100 Mulberry Street
                             Newark, N.J. 07102-4077
                                 (800) 227-7BFM

[RECYCLE LOGO] Printed on recycled paper                            09247B-10-9

================================================================================
THE BLACKROCK
FLORIDA
INVESTMENT QUALITY
MUNICIPAL TRUST
================================================================================
SEMI-ANNUAL REPORT
APRIL 30, 1997

                                   [GRAPHIC]




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