BLACKROCK FLORIDA INVESTMENT QUALITY MUNICIPAL TRUST
N-30D, 1997-12-29
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- --------------------------------------------------------------------------------
            THE BLACKROCK FLORIDA INVESTMENT QUALITY MUNICIPAL TRUST
                          ANNUAL REPORT TO SHAREHOLDERS
                          REPORT OF INVESTMENT ADVISER
- --------------------------------------------------------------------------------




                                                               November 30, 1997



Dear Trust Shareholder:

      U.S.  fixed income  investors  have been rewarded with solid total returns
over the past twelve months, as moderate economic growth and low inflation drove
Treasury yields below year-end 1996 levels by October 31, 1997.

      The economy has shown some signs of slowing,  which BlackRock  expects may
persist as early  indicators  suggest that holiday  spending may be tepid. We do
not see  immediate  signs  of  inflationary  pressure  nor do we  anticipate  an
imminent change in monetary policy by the Federal Reserve. Our long-term outlook
for the bond market remains  optimistic,  based on the  fundamentally  favorable
backdrop  of slower  economic  growth,  low  inflation  and  declining  Treasury
borrowing.

      This report contains detailed market and portfolio strategy  commentary by
your Trust's  managers in addition to the Trust's audited  financial  statements
and a detailed portfolio listing. We thank you for your continued  investment in
the Trust and wish you a successful new year.


Sincerely,



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




                                       1

<PAGE>


                                                               November 30, 1997


Dear Shareholder:

      We are  pleased to present  the annual  report for The  BlackRock  Florida
Investment  Quality  Municipal  Trust  ("the  Trust")  for the fiscal year ended
October 31, 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.

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

                             ---------------------------------------------------
                             10/31/97    10/31/96    Change    High      Low
- --------------------------------------------------------------------------------
Stock Price                  $13.3125     $12.25      8.67%  $13.375   $12.125
- --------------------------------------------------------------------------------
Net Asset Value (NAV)        $14.86       $14.15      5.02%   $14.88   $13.70
- --------------------------------------------------------------------------------

THE FIXED INCOME MARKETS

      The first half of the Trust's fiscal year was  characterized  by increased
concern over potential inflationary pressures.  Bond prices fell and yields rose
between  mid-December 1996 and mid-April 1997, as economic data indicated a very
strong  economy.  In an effort to subdue  this  growth and  pre-emptively  fight
inflation,  the Federal Reserve raised the Federal funds rate by 25 basis points
(1/4%)  to 5.50% at  their  March 25 FOMC  policy  meeting.  During  the  second
quarter,  however, signs of more moderate economic growth began to appear. Lower
factory orders, decreased consumer spending and higher inventories,  in addition
to continued benign inflationary forces,  soothed investor fears over inflation.
Accordingly,  the Federal Reserve left interest rates unchanged at their May 20,
July 2 and September 30 policy meetings. U.S. Treasury yields reflected investor
expectations of Federal Reserve policy  activity.  The yield of the 10-year note
rose from a period low of 6.04% in late November 1996 to 6.98% in mid-April 1997
in response to Federal Reserve  Chairman Alan  Greenspan's  warning of excessive
equity market euphoria and in anticipation of a Federal funds rate increase.  As
economic data softened, the yield of the 10-year fell over 100 basis points from
6.98% to close at 5.83% on October 31, 1997.

      The municipal bond market, represented by the LEHMAN MUNICIPAL BOND INDEX,
posted a total return of 8.50% for the 12 month  period ended  October 31, 1997,
underperforming  the domestic  taxable  investment grade market (measured by the
LEHMAN AGGREGATE INDEX), which returned 8.89%. Despite the rally in the Treasury
market,  demand for municipals was relatively  strong,  particularly  during the
summer,  when  nearly $60 billion  worth of  municipal  issues  matured and were
reinvested  back into the  market.  However,  the  decline  in  Treasury  yields
resulted in a significant increase in new municipal supply during September,  as
municipal issuers refunded higher interest bearing  securities and brought lower
yielding issues to market. During October,  municipals experienced their largest
underperformance versus Treasuries during 1997, as they were unable to keep pace
with the global demand for U.S. Treasuries.



                                       2


<PAGE>


      Florida's  economy remains  strong,  particularly in the trade and service
sector,  and the State is projecting  1997's growth rate to be 2.3%. This growth
is in part fueled by the increasing  population,  which  increased  nearly 2% in
1996 to over 14 million  residents.  Further,  the State's  unemployment rate is
projected  to be 4.8%  for  1997,  which is down  from  the 1996  level of 5.1%.
Lastly,  Florida's fiscal year 1997-98 revenues are ahead of projections,  which
could result in a budget surplus of approximately $1 billion.
 
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 net 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.  Over the past twelve  months,  the  Federal  Reserve
tightened  monetary  policy by raising short term rates 25 basis points to 5.50%
in March.  Typically,  short term municipal  rates (which  determine the Trust's
borrowing  costs) are  approximately  65% of Treasury  rates.  Accordingly,  the
Trust's cost of leverage modestly increased as a result of the Fed's action.

      With respect to credit quality,  the portfolio  selectively took advantage
of yield spreads between higher-rated (AA and AAA) and lower-rated (BBB- and A-)
Florida  municipal  bonds where  opportunities  existed.  The Trust will look to
reverse  these trades when the  opportunities  present  themselves.  The Trust's
current  strategy  emphasizes  high credit  quality  non-callable  and  callable
premiums  in the 7- to  15-year  maturity  range.  Prevailing  municipal  market
conditions do not reward investors for extending beyond this maturity range.

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

                                SECTOR BREAKDOWN
- --------------------------------------------------------------------------------
      SECTOR                       OCTOBER 31, 1997         OCTOBER 31, 1996
- --------------------------------------------------------------------------------
  Power                                    17%                     13%
- --------------------------------------------------------------------------------
  Transportation                           16%                     17%
- --------------------------------------------------------------------------------
  School                                   12%                      --
- --------------------------------------------------------------------------------
  Lease Revenue                            11%                     15%
- --------------------------------------------------------------------------------
  City, County & State                      8%                     17%
- --------------------------------------------------------------------------------
  Sales Tax                                 6%                      4%
- --------------------------------------------------------------------------------
  Miscellaneous Revenue                     4%                     10%
- --------------------------------------------------------------------------------
  Water & Sewer                             4%                      5%
- --------------------------------------------------------------------------------
  Hospital                                  4%                      4%
- --------------------------------------------------------------------------------
  Housing                                   4%                      4%
- --------------------------------------------------------------------------------
  University                                4%                      4%
- --------------------------------------------------------------------------------
  Building                                  4%                      3%
- --------------------------------------------------------------------------------
  Special tax                               4%                      --
- --------------------------------------------------------------------------------
  Other                                     2%                      --
- --------------------------------------------------------------------------------
  Utility                                   --                      4%
- --------------------------------------------------------------------------------


                                       3

<PAGE>

- --------------------------------------------------------------------------------
    STANDARD & POOR'S/MOODY'S/FITCH'S
              CREDIT RATING              OCTOBER 31, 1997      OCTOBER 31, 1996
- --------------------------------------------------------------------------------
                 AAA/Aaa                        53%                   50%
- --------------------------------------------------------------------------------
                  AA/Aa                         16%                   21%
- --------------------------------------------------------------------------------
                   A/A                          18%                   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 10/31/97:                               $13.3125
- --------------------------------------------------------------------------------
  Net Asset Value as of 10/31/97:                                    $14.86
- --------------------------------------------------------------------------------
  Yield on Closing Stock Price as of 10/31/97 ($13.3125)1:            5.41%
- --------------------------------------------------------------------------------
  Current Monthly Distribution per Share2:                            $0.06
- --------------------------------------------------------------------------------
  Current Annualized Distribution per Share2:                         $0.72
- --------------------------------------------------------------------------------

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



                                       4

<PAGE>


- --------------------------------------------------------------------------------
THE BLACKROCK FLORIDA INVESTMENT QUALITY MUNICIPAL TRUST
PORTFOLIO OF INVESTMENTS OCTOBER 31, 1997
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>

           PRINCIPAL                                                                                  OPTION CALL
  RATING   *AMOUNT                                                                                    PROVISIONS          VALUE
(UNAUDITED) (000)                                 DESCRIPTION (A)                                     (UNAUDITED)       (NOTE 1)
- -----------------------------------------------------------------------------------------------------------------------------------
<S>         <C>     <C>                                                                              <C>             <C>
                     LONG-TERM INVESTMENTS--146.9%
                     FLORIDA--122.1%
                     Boynton Beach Util. Sys. Rev., FGIC,
AAA         $ 170      6.25%, 11/01/20, ETM ........................................................   No Opt. Call  $   190,859
AAA           830      6.25%, 11/01/20 .............................................................   11/02 at 102      889,528
A1          1,000    Brevard Cnty. Hlth. Facs., Holmes Regl. Med. Ctr., 5.75%, 10/01/13 ............   10/03 at 102    1,030,700
AAA         1,000    Brevard Cnty. Sch. Brd., C.O.P., Ser. B, 5.50%, 7/01/21, AMBAC ................   7/06 at 102     1,010,730
AAA         1,000    Collier Cnty. Sch. Brd., C.O.P., 5.00%, 2/15/16, FSA ..........................   2/06 at 101       974,100
AAA         1,000    Dade Cnty. Aviation Rev., Miami Int'l Arpt., Ser. C, 5.75%, 10/01/25,            
                       MBIA ........................................................................  10/05 at 102     1,034,580
AAA         1,000    Dade Cnty. Sch. Brd., C.O.P., Ser. A, 6.00%, 5/01/14, MBIA ....................   5/04 at 101     1,066,560
AAA         1,000    Dade Cnty. Spl. Oblig., Ser. B, Zero Coupon, 10/01/14, AMBAC .................. 10/08 at 71.9       395,730
AAA         1,000    First Florida Gov. Fin. Comn. Rev., Gainsville, Hollywood &
                       St. Petersburg, 5.75%, 7/01/16, AMBAC .......................................   7/06 at 101     1,037,700
AAA           840    Florida Hsg. Fin. Agcy., Sngl. Fam. Mtge., Ser. A, 6.25%, 7/01/11, GNMA .......   7/04 at 102       893,852
AA          1,000    Florida St. Brd. of Ed., Pub. Ed., Ser. B, 5.875%, 6/01/24 ....................   6/05 at 101     1,034,420
AA          1,000    Florida St. Brd. of Ed., Ser. C, 5.85%, 6/01/18 ...............................   6/03 at 101     1,028,890
AAA           500    Florida St. Dept. of Corrections, C.O.P., Okeechobee Correctional Fac.,           
                       6.25%, 3/01/15, AMBAC .......................................................   3/05 at 102       548,430
AA+         1,000    Florida St. Dept. of Trans., 5.80%, 7/01/21 ...................................   7/05 at 101     1,029,520
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     1,051,560
AAA         1,000    Jacksonville Cap. Impvt. Rev., Gator Bowl Proj., 5.50%, 10/01/14,                 
                       AMBAC .......................................................................  10/04 at 101     1,024,160
AAA         1,000    Lee Cnty. Trans. Facs. Rev., 5.75%, 10/01/22, MBIA ............................  10/05 at 102     1,032,240
A           1,000    Orlando & Orange Cnty. Expwy., 5.95%, 7/01/23 .................................   7/01 at 102     1,017,850
Aa          1,000    Orlando Utils. Comn. Wtr. & Elec. Rev., Ser. D, 5.50%, 10/01/20 ...............  10/99 at 100     1,000,650
AAA         1,000    Seminole Cnty. Sch. Brd., C.O.P., Ser. A, 6.125%, 7/01/14, MBIA ...............   7/04 at 102     1,074,910
AAA         1,000    Sunrise Florida Util. Sys. Rev., Ser. A, 5.75%, 10/01/21, AMBAC ...............  10/06 at 101     1,033,800
Baa         1,000    Volusia Cnty. Ed. Fac. Auth. Rev., 6.125%, 10/15/16 ...........................  10/06 at 102     1,046,240
                                                                                                                     -----------
                                                                                                                      20,447,009
                                                                                                                     -----------
                     PUERTO RICO--24.8%
                     Puerto Rico Elec. Pwr. Auth. Rev.,
BBB+        1,000      Ser. T, 6.375%, 7/01/24 .....................................................   7/04 at 102     1,077,090
BBB+        1,000      Ser. U, 6.00%, 7/01/14 ......................................................   7/04 at 102     1,055,280
                     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       997,350
A           1,000      5.75%, 7/01/15 .............................................................. 7/03 at 101.5     1,019,750
                                                                                                                     -----------
                                                                                                                       4,149,470
                                                                                                                     -----------
                     Total Long-Term Investments (cost $22,881,833) ................................                  24,596,479
                                                                                                                     -----------
</TABLE>

                       See Notes to Financial Statements.

                                        5

<PAGE>


<TABLE>
<CAPTION>


           PRINCIPAL                                                                                  OPTION CALL
  RATING   *AMOUNT                                                                                    PROVISIONS          VALUE
(UNAUDITED) (000)                                 DESCRIPTION (A)                                     (UNAUDITED)       (NOTE 1)
- -----------------------------------------------------------------------------------------------------------------------------------
 <S>         <C>     <C>                                                                              <C>             <C>
                    SHORT-TERM INVESTMENTS**--1.8%
VIMG1       $300     Saint Lucie Cnty. Pollution Control Rev., FRDD, 3.90%, 11/03/97
                       (cost $300,000) .............................................................                 $   300,000
                                                                                                                     -----------
                  TOTAL INVESTMENTS--148.7% (cost $23,181,833) .....................................                  24,896,479
                     Other assets in excess of liabilities--2.1% ...................................                     348,595
                     Liquidation value of preferred stock--(50.8)% .................................                  (8,500,000)
                                                                                                                     -----------
                     NET ASSETS APPLICABLE TO COMMON SHAREHOLDERS--100% ............................                 $16,745,074
                                                                                                                     ===========

</TABLE>


- -------------
   * 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 earlier of the next date on which the
     security  can be  redeemed  at par or the next  date on  which  the rate of
     interest is adjusted.
   + Option Call Provisions: date (month/year) and prices of the earliest 
     option  call or redemption. There may be other call provisions at  varying
     prices at later dates.

<TABLE>
<CAPTION>
- ------------------------------------------------------------------------------------------------------------------------------------
                                 (A) THE FOLLOWING ABBREVIATIONS ARE USED IN PORTFOLIO DESCRIPTIONS:
     <S>     <C>                                                   <C>

     AMBAC   -- American Municipal Bond Assurance Corporation      FRDD  -- Floating Rate Daily Demand
     C.O.P.  -- Certificate of Participation                       FSA   -- Florida State Assurance
     FGIC    -- Financial Guaranty Insurance Company               GNMA  -- Government National Mortgage Association
     ETM     -- Escrowed to maturity                               MBIA  -- Municipal Bond Insurance Association

- ------------------------------------------------------------------------------------------------------------------------------------
</TABLE>






                       See Notes to Financial Statements


                                       6

<PAGE>


- -------------------------------------------------------------------------------
THE BLACKROCK FLORIDA INVESTMENT
QUALITY MUNICIPAL TRUST
STATEMENT OF ASSETS AND LIABILITIES
OCTOBER 31, 1997
- -------------------------------------------------------------------------------


ASSETS

Investments, at value (cost $23,181,833) (Note 1) ............... $24,896,479
Cash ............................................................      28,395
Interest receivable .............................................     370,331
Deferred organization expenses and other assets .................         311
                                                                  -----------
                                                                   25,295,516
                                                                  -----------

LIABILITIES
Advisory fee payable (Note 2) ...................................       7,478
Dividends payable-common stock ..................................       3,655
Administration fee payable (Note 2) .............................       2,137
Dividends payable-preferred stock ...............................         885
Other accrued expenses ..........................................      36,287
                                                                  -----------
                                                                       50,442
                                                                  -----------
                                                                             
NET INVESTMENT ASSETS ........................................... $25,245,074
                                                                  ===========
                                                                             
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 ...........................     131,471
  Accumulated net realized loss .................................    (697,759)
  Net unrealized appreciation ...................................   1,714,646
                                                                  -----------
  Net investment assets, October 31, 1997 ....................... $25,245,074
                                                                  ===========
                                                            
Net assets applicable to common shareholders .................... $16,745,074
                                                                  ===========

Net asset value per share:
  ($16,745,074 / 1,127,093 shares of
  common stock issued and outstanding) ..........................      $14.86
                                                                       ======


- --------------------------------------------------------------------------------
THE BLACKROCK FLORIDA INVESTMENT
QUALITY MUNICIPAL TRUST
STATEMENT OF OPERATIONS
YEAR ENDED OCTOBER 31, 1997
- --------------------------------------------------------------------------------


NET INVESTMENT INCOME

Income
  Interest and discount earned ..................................  $1,403,057
                                                                   ----------


Expenses
  Investment advisory ...........................................      85,988
  Administration ................................................      24,568
  Auction agent .................................................      21,000
  Shareholder reports ...........................................      16,000
  Directors .....................................................      13,000
  Transfer agent ................................................       9,000
  Legal .........................................................       7,000
  Audit .........................................................       7,000
  Custodian .....................................................       2,500
  Miscellaneous .................................................      16,972
                                                                   ----------
  Total expenses ................................................     203,028
                                                                   ----------
Net investment income ...........................................   1,200,029
                                                                   ----------


REALIZED AND UNREALIZED GAIN
ON INVESTMENTS (NOTE 3)
Net realized gain on investments ................................      39,699
Net change in unrealized appreciation
  on investments ................................................     677,912
                                                                   ----------
Net gain on investments .........................................     717,611
                                                                   ----------




NET INCREASE IN NET INVESTMENT
ASSETS RESULTING FROM OPERATIONS ................................  $1,917,640
                                                                   ==========



                       See Notes to Financial Statements

                                       7

<PAGE>

- --------------------------------------------------------------------------------
THE BLACKROCK FLORIDA INVESTMENT QUALITY MUNICIPAL TRUST
STATEMENTS OF CHANGES IN NET INVESTMENT ASSETS
- --------------------------------------------------------------------------------

<TABLE>
<CAPTION>

                                                                                                      FOR THE YEAR ENDED
                                                                                                          OCTOBER 31,
                                                                                                   ----------------------
                                                                                                   1997              1996
                                                                                                   ----              ----
<S>                                                                                            <C>               <C>
INCREASE (DECREASE) IN NET INVESTMENT ASSETS
Operations: 
   Net investment income ...................................................................   $ 1,200,029       $ 1,163,662
   Net realized gain on investments ........................................................        39,699           106,968
   Net change in unrealized appreciation on investments ....................................       677,912            42,218
                                                                                               -----------       -----------
   Net increase in net investment assets resulting from operations .........................     1,917,640         1,312,848
                                                                                         
Dividends and distributions:                                                             
   To common shareholders from net investment income .......................................      (806,563)         (827,678)
   To preferred shareholders from net investment income ....................................      (310,486)         (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 .......................................................    (1,123,743)       (1,150,105)
                                                                                               -----------       -----------
     Total increase ........................................................................       793,897           162,743
                                                                                         
NET INVESTMENT ASSETS                                                                    
Beginning of year ..........................................................................    24,451,177        24,288,434
                                                                                               -----------       -----------
End of year ................................................................................   $25,245,074       $24,451,177
                                                                                               ===========       ===========

</TABLE>















                       See Notes to Financial Statements.

                                       8

<PAGE>

- -------------------------------------------------------------------------------
THE BLACKROCK FLORIDA INVESTMENT QUALITY MUNICIPAL TRUST
FINANCIAL HIGHLIGHTS
- -------------------------------------------------------------------------------
<TABLE>
<CAPTION>

                                                                                                                    FOR THE PERIOD
                                                                           FOR THE YEAR ENDED OCTOBER 31,            JUNE 4, 1993*
                                                                   --------------------------------------------         THROUGH
PER SHARE OPERATING PERFORMANCE:                                      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 ........................................      1.06        1.03         1.05        .98            .31
   Net realized and unrealized gain (loss) on investments .......       .65         .13         2.36      (3.02)           .86
                                                                   --------   ---------     --------   --------       --------
   Net increase (decrease) from investment operations ...........      1.71        1.16         3.41      (2.04)          1.17
                                                                   --------   ---------     --------   --------       --------
Dividends and distributions:
Dividends from net investment income to:
     Common shareholders ........................................      (.72)       (.73)        (.79)      (.79)          (.20)
     Preferred shareholders .....................................      (.28)       (.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 ..........................     (1.00)      (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** ................................  $  14.86   $   14.15        14.01   $  11.69        $ 14.77#
                                                                   ========   =========     ========   ========       ========
Per share market value, end of period** .........................  $13.3125   $   12.25       12.625   $ 10.375        $ 14.00
                                                                   ========   =========     ========   ========       ========
TOTAL INVESTMENT RETURN : .......................................    14.95%       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 ..........     7.43%       7.41%        7.96%      7.34%          5.40%+++
Preferred stock dividends .......................................     1.92%       1.97%        2.28%      1.48%          0.80%+++
Net investment income available to common shareholders ..........     5.51%       5.44%        5.68%      5.86%          4.60%+++
SUPPLEMENTAL DATA:
Average net assets of common shareholders (in thousands) ........  $16,150       $ 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) .  $16,745       $ 15,951      $ 15,788   $ 13,174    $ 16,644
Asset coverage per share of preferred stock, end of period## ....  $74,253       $ 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.
 *** Actual  amount paid to common  shareholders  for the year ended October 31,
     1997 was  $0.004325,  and the actual amount paid to preferred  shareholders
     was  $0.000185   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 audited 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
- --------------------------------------------------------------------------------
NOTE 1. ACCOUNTING POLICIES
The  BlackRock  Florida  Investment  Quality  Municipal  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.

RECLASSIFICATION  OF  CAPITAL  ACCOUNTS:  The Trust  accounts  and  reports  for
permanent differences between financial and tax reporting in accordance with the
American Institute of Certified Public Accountants'  Statement of Position 93-2:
Determination,  Disclosure  and  Financial  Statement  Presentation  of  Income,
Capital Gain and Return of Capital  Distributions by Investment  Companies.  The
effect of applying  this  statement  for the year ended  October 31, 1997 was to
increase accumulated net realized loss and increase undistributed net investment
income by $1,311.  Net investment income, net realized gains and net assets were
not affected by this change.


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.

                                       10

<PAGE>

 
     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.


NOTE 3. PORTFOLIO SECURITIES 
Purchases and sales of investment securities, other than short-term investments,
for the year ended  October  31,  1997  aggregated  $1,159,830  and  $1,277,064,
respectively.

     The federal income tax basis of the Trust's investments at October 31, 1997
was substantially the same as for financial reporting purposes and, accordingly,
net and gross  unrealized  appreciation  was $1,714,646.  For federal income tax
purposes,  the Trust had a capital  loss  carryforward  at October  31,  1997 of
approximately  $698,000 which will expire in 2002.  Such  carryforward  is after
utilization  of  approximately  $39,700 to offset the Trust's net taxable  gains
recognized  in the year ended  October 31,  1997.  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 October 31,  1997,  the  Adviser  owned 7,093
shares.  As of October 31, 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 year ended October 31, 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 October 31, 1997,  the Board of  Directors of the Trust  declared
dividends  from  undistributed  earnings  of $0.0600  per common  share  payable
November 28, 1997 to shareholders of record on November 14, 1997. For the period
November 1, 1997 through November 30, 1997 dividends declared on Preferred Stock
totalled $26,193 in aggregate for the outstanding Preferred Stock.


                                       11
<PAGE>


- --------------------------------------------------------------------------------
            THE BLACKROCK FLORIDA INVESTMENT QUALITY MUNICIPAL TRUST
                         REPORT OF INDEPENDENT AUDITORS
- --------------------------------------------------------------------------------

The  Shareholders  and Board of Directors of The  BlackRock  Florida  Investment
Quality Municipal Trust Inc.:

      We have  audited the  accompanying  statement  of assets and  liabilities,
including the portfolio of  investments,  of The  BlackRock  Florida  Investment
Quality  Municipal Trust Inc. as of October 31, 1997 and the related  statements
of operations  for the year then ended and of changes in net  investment  assets
for each of the two years in the period then ended and the financial  highlights
for each of the four years in the period  then ended and for the period  June 4,
1993  (commencement  of  investment  operations)  to  October  31,  1993.  These
financial  statements  and financial  highlights are the  responsibility  of the
Trust's  management.  Our  responsibility  is to  express  an  opinion  on these
financial statements and financial highlights based on our audits.

      We conducted our audits in accordance  with  generally  accepted  auditing
standards.  Those standards require that we plan and perform the audit to obtain
reasonable  assurance  about  whether the  financial  statements  and  financial
highlights are free of material misstatement.  An audit includes examining, on a
test basis,  evidence  supporting  the amounts and  disclosures in the financial
statements.  Our procedures included confirmation of securities owned at October
31, 1997, by correspondence  with the custodian and brokers;  where replies were
not received from brokers, we performed other auditing procedures. An audit also
includes assessing the accounting principles used and significant estimates made
by  management,   as  well  as  evaluating  the  overall   financial   statement
presentation.  We believe  that our audits  provide a  reasonable  basis for our
opinion.

      In our opinion, such financial statements and financial highlights present
fairly,  in all  material  respects,  the  financial  position of The  BlackRock
Florida  Investment  Quality  Municipal  Trust Inc. at October 31, 1997, and the
results of its  operations,  the  changes in its net  investment  assets and its
financial  highlights  for the  respective  stated  periods in  conformity  with
generally accepted accounting principles.



/s/Deloitte & Touche LLP
- --------------------------
Deloitte & Touche LLP
New York, New York
December 12, 1997



                                       12



<PAGE>


- --------------------------------------------------------------------------------
            THE BLACKROCK FLORIDA INVESTMENT QUALITY MUNICIPAL TRUST
                                 TAX INFORMATION
- --------------------------------------------------------------------------------

      We are required by the Internal  Revenue Code to advise you within 60 days
of the Trust's  fiscal year end  (October 31, 1997) as to the federal tax status
of dividends you received during such fiscal year.The dividend paid December 31,
1996 to common  shareholders of record on December 16, 1996 included $.00425 per
share of taxable  ordinary  income.  The  dividend  paid  December  29,  1996 to
preferred  shareholders  of record on December 26, 1996 included $5.35 per share
of  taxable  ordinary  income.  All  other  dividends  paid to both  common  and
preferred shareholders consisted of federal tax-exempt interest.


- --------------------------------------------------------------------------------
                           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 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 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.


                                       13

<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 $50
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 125 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 at least  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.




                                       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 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.


                                       15
<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.

                                       16

<PAGE>

- --------------------------------------------------------------------------------
                      BLACKROCK FINANCIAL MANAGEMENT, INC.
                           SUMMARY OF CLOSED-END FUNDS
- --------------------------------------------------------------------------------


<TABLE>
<CAPTION>


TAXABLE TRUSTS
- ------------------------------------------------------------------------------------------------------------------------------------
                                                                                                             MATURITY
PERPETUAL TRUSTS                                                                     STOCK SYMBOL              DATE
                                                                                     ------------            ---------
<S>                                                                                      <C>                   <C>  
The BlackRock Income Trust Inc.                                                          BKT                    N/A
The BlackRock North American Government Income Trust Inc.                                BNA                    N/A


TERM TRUSTS
The BlackRock 1998 Term Trust Inc.                                                       BBT                   12/98
The BlackRock 1999 Term Trust Inc.                                                       BNN                   12/99
The BlackRock Target Term Trust Inc.                                                     BTT                   12/00
The BlackRock 2001 Term Trust Inc.                                                       BLK                   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
- ------------------------------------------------------------------------------------------------------------------------------------

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


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


</TABLE>


IF YOU WOULD LIKE FURTHER  INFORMATION  PLEASE DO NOT HESITATE TO CALL BLACKROCK
        AT (800) 227-7BFM (7236) OR CONSULT WITH YOUR FINANCIAL ADVISOR.

                                       17

<PAGE>

- --------------------------------------------------------------------------------
                      BLACKROCK FINANCIAL MANAGEMENT, INC.
                                   AN OVERVIEW
- --------------------------------------------------------------------------------

      BlackRock  Financial  Management  (BlackRock)  is a registered  investment
adviser which specializes in managing high quality fixed income securities, both
taxable and tax exempt.  BlackRock  currently manages over $50 billion of assets
across the government,  mortgage,  corporate and municipal sectors. These assets
are managed on behalf of many  individual  investors  in  twenty-one  closed-end
funds  traded on either the New York or American  stock  exchanges,  and several
open-end  funds  and on behalf of more  than 125  institutional  clients  in the
United States and overseas.

      BlackRock  was  formed in April  1988 by fixed  income  professionals  who
sought to create an asset management firm  specializing in managing fixed income
securities for individuals and  institutional  investors.  The  professionals at
BlackRock have extensive experience creating, analyzing and trading a variety of
fixed income instruments,  including the most complex structured securities.  In
fact, individuals at BlackRock are responsible for many of the major innovations
in the  mortgage-backed  and  asset-backed  securities  markets,  including  the
creation of the 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
significant  emphasis it places on the  development  of  proprietary  analytical
capabilities.  A quarter of the professionals at BlackRock work full-time in the
design,  maintenance  and use of such systems  which are otherwise not generally
available to investors.  BlackRock's  proprietary  analytical tools are used for
evaluating,  investing in and designing investment  strategies and portfolios of
fixed  income  securities,   including  mortgage   securities,   corporate  debt
securities or tax-exempt securities and a variety of hedging instruments.

      BlackRock has developed  investment  products  which respond to investors'
needs and has been  responsible  for several  major  innovations  in  closed-end
funds.  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 AAAf  rating by  Standard & Poor's,  and the first
closed-end  fund to invest  primarily in North American  Government  securities.
BlackRock's  closed-end funds currently have dividend  reinvestment  plans which
are  designed  to  provide  an  ongoing  source of  demand  for the stock in the
secondary market. BlackRock manages a ladder of alternative investment vehicles,
with each fund 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
you may have about your  BlackRock  funds and thank you for the continued  trust
you place in our abilities.




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

                                       18
<PAGE>


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

   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

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


THE BLACKROCK
FLORIDA
INVESTMENT QUALITY
MUNICIPAL TRUST
================================================================================
ANNUAL REPORT
OCTOBER 31, 1997


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