BLACKROCK FLORIDA INVESTMENT QUALITY MUNICIPAL TRUST
N-30D, 1999-07-01
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- --------------------------------------------------------------------------------
            THE BLACKROCK FLORIDA INVESTMENT QUALITY MUNICIPAL TRUST
                      SEMI-ANNUAL REPORT TO SHAREHOLDERS
                          REPORT OF INVESTMENT ADVISER
- --------------------------------------------------------------------------------

                                                                    May 31, 1999





Dear Shareholder:


     Since  the  Trust's  last  report,  interest  rates  rose  sharply  as U.S.
economic  growth  remained  strong,  labor  markets  tightened and international
markets  began  to  recover. In light of these factors, on May 18 members of the
Federal  Reserve's Federal Open Market Committee announced that they had adopted
a  bias  towards  higher  interest  rates, citing a concern that inflation might
start to accelerate.

     BlackRock  has  adopted  a  cautious view of the bond market, as we believe
that  there  is  a real possibility that the Federal Reserve will raise interest
rates  in  the  near  future. Additionally, because the Treasury yield curve has
already  priced  in  Federal Reserve action, we believe that interest rates will
trade in a relatively narrow range until the economy shows signs of slowing.

     This  report  contains  comments  from  your Trust's managers regarding the
markets  and  portfolio  in  addition  to the Trust's financial statements and a
detailed  portfolio  listing.  We thank you for your continued investment in the
Trust.


Sincerely,


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


                                       1


<PAGE>

                                                                   May 31, 1999




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,  1999.  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
NAV over the period:


<TABLE>
<CAPTION>

                       ----------------------------------------------------------------------
                         4/30/99     10/31/98      CHANGE       HIGH         LOW
- ---------------------------------------------------------------------------------------------
<S>                      <C>          <C>           <C>        <C>         <C>
 STOCK PRICE             $15.0625     $15.125      (0.41%)     $15.875     $14.6875
- ---------------------------------------------------------------------------------------------
 NET ASSET VALUE (NAV)   $15.63       $15.69       (0.38%)     $15.85      $15.58
- ---------------------------------------------------------------------------------------------
</TABLE>

THE FIXED INCOME MARKETS

     The  past  six  months have witnessed continued rapid expansion of the U.S.
economy.  GDP  growth  for  the  first quarter of 1999 is estimated at an annual
rate  above 4%, far exceeding the historical non-inflationary level of 2%. While
BlackRock  believes  that  growth  may  slow down in the second half of 1999, we
anticipate  GDP  to  remain  above  3% for the year. Despite the strong economic
growth,  inflation  has  stayed  surprisingly  subdued.  A significant factor in
maintaining  low  inflation  in  the  U.S.  economy  stems  from the increase in
industrial  productivity. Higher productivity has allowed manufacturers to avoid
price increases despite tight labor markets.

     The  Treasury  market  briefly  rallied early in the fourth quarter of 1998
before  dramatically reversing in 1999. For the semi-annual period, the yield of
the  10-year  Treasury  security rose from 4.61% on October 31, 1998 to 5.35% on
April  30,  1999.  The  weakened  performance  of  the  Treasury  market  can be
attributed  to investors leaving the safe haven of Treasuries to purchase credit
sensitive  or  higher  yielding  securities in reaction to inflationary concerns
voiced by the Federal Reserve.

     Municipal  bonds  outperformed  the taxable domestic bond market during the
past  six  months,  returning  1.55% (as measured by the LEHMAN MUNICIPAL INDEX)
versus  the  LEHMAN  AGGREGATE INDEX'S 0.68% on a pre-tax basis. The main forces
behind  municipal  bond outperformance were the strongest mutual fund inflows in
five  years  and  the reduction of municipal bond supply (due to higher interest
rates)  after the second highest year of issuance ($284 billion issued in 1998.)
We  believe  that municipals currently offer attractive value versus Treasuries,
and   our   outlook  for  municipal  securities  is  favorable.  Despite  recent
outperformance  we  still  feel  that  the  attractive taxable equivalent yields
offered by municipal securities are compelling.

     The  State  of  Florida's  strong  and  stable  financial position reflects
prudent  financial management combined with a solid and diversifying economy. In
FY1998,  the  State's  General  Fund  revenues increased 8.77% over the previous
year  to  $36  billion while the expenditures increased at 6% for the last year.
The  FY1998  unreserved  General  Fund balance increased 23% to $6.08 billion or
17%  of  revenues;  this  provides  strong bondholder security. Florida's stable
economy  combined  with  rapid  population  growth  continues to fuel one of the
country's strongest job markets.


                                       2


<PAGE>


THE TRUST'S PORTFOLIO AND INVESTMENT STRATEGY

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

     Additionally,   the  Trust  employs  leverage  to  enhance  its  income  by
borrowing  at  short-term  municipal  rates and investing the proceeds in longer
maturity  issues  that  have  higher  yields.  The degree to which the Trust can
benefit  from  its  use  of  leverage may affect its ability to pay high monthly
income.  At  the  end of the semi-annual period, the Trust's leverage amount was
33%  of  total  assets.  During the past six months, the Trust's borrowing costs
have remained favorable.

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

     The  following  charts  compare  the  Trust's  current and October 31, 1998
asset composition and credit quality allocations:

<TABLE>
<CAPTION>


                          SECTOR BREAKDOWN
  ----------------------------------------------------------------
        SECTOR          APRIL 30, 1999   OCTOBER 31, 1998
  ----------------------------------------------------------------
   <S>                         <C>              <C>
      Lease Revenue          19%              19%
  ----------------------------------------------------------------
      Power                  17%              17%
  ----------------------------------------------------------------
      Transportation         17%              17%
  ----------------------------------------------------------------
      City, County & State   13%              13%
  ----------------------------------------------------------------
      School                 13%              12%
  ----------------------------------------------------------------
      Sales Tax              6%               6%
  ----------------------------------------------------------------
      Water & Sewer          4%               5%
  ----------------------------------------------------------------
      Hospital               4%               4%
  ----------------------------------------------------------------
      University             4%               4%
  ----------------------------------------------------------------
      Housing                3%               3%
  ----------------------------------------------------------------
</TABLE>


<TABLE>
<CAPTION>
  ----------------------------------------------------------------
        CREDIT RATING*   APRIL 30, 1999   OCTOBER 31, 1998
  ----------------------------------------------------------------
   <S>                     <C>               <C>
      AAA/Aaa              54%               54%
  ----------------------------------------------------------------
      AA/Aa                17%               17%
  ----------------------------------------------------------------
      A/A                  16%               16%
  ----------------------------------------------------------------
      BBB/Baa              13%               13%
  ----------------------------------------------------------------

</TABLE>

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


                                       3


<PAGE>


     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,

/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 4/30/99:                          $15.0625
- --------------------------------------------------------------------------------
  Net Asset Value as of 4/30/99:                              $15.63
- --------------------------------------------------------------------------------
  Yield on Closing Stock Price as of 4/30/99 ($15.0625)1:       5.28%
- --------------------------------------------------------------------------------
  Current Monthly Distribution per Share2:                     $0.0663
- --------------------------------------------------------------------------------
  Current Annualized Distribution per Share2:                  $0.7956
- --------------------------------------------------------------------------------

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 APRIL 30, 1999 (UNAUDITED)
- --------------------------------------------------------------------------------
<TABLE>
<CAPTION>
          PRINCIPAL
            AMOUNT                                                                                      OPTION CALL        VALUE
 RATING*    (000)                                            DESCRIPTION                                PROVISIONS+       (NOTE 1)
====================================================================================================================================
<S>       <C>           <C>                                                                             <C>            <C>
                        LONG-TERM INVESTMENTS-144.0%
                        FLORIDA-119.5%
                        Boynton Beach Util. Sys. Rev., FGIC,
 AAA      $  830          6.25%, 11/01/20 ............................................................  11/02 at 102   $   901,015
 AAA         170          6.25%, 11/01/20 ............................................................      ETM            194,162
 A1        1,000        Brevard Cnty. Hlth. Fac., Holmes Regl. Med. Ctr., 5.75%, 10/01/13 ............  10/03 at 102     1,042,160
 AAA       1,000        Brevard Cnty. Sch. Brd., C.O.P., Ser. B, 5.50%, 7/01/21, AMBAC ...............   7/06 at 102     1,037,280
 AAA       1,000        Collier Cnty. Sch. Brd., C.O.P., 5.00%, 2/15/16, FSA .........................   2/06 at 101       999,950
 AAA       1,000        Dade Cnty. Aviation Rev., Miami Int'l. Arpt., Ser. C, 5.75%, 10/01/25, MBIA.    10/05 at 102     1,073,930
 AAA       1,000++      Dade Cnty. Sch. Brd., C.O.P., Ser. A, 6.00%, 5/01/04, MBIA ...................      N/A          1,103,570
 AAA       1,000++      Dade Cnty. Spl. Oblig., Ser. B, Zero Coupon, 10/01/08, AMBAC .................      N/A            476,090
 AAA       1,000        First Florida Gov. Fin. Comn. Rev., Gainsville, Hollywood & St. Petersburg,
             740          5.75%, 7/01/16, AMBAC ......................................................   7/06 at 101     1,079,790
 AAA       1,000        Florida Hsg. Fin. Agcy., Sngl. Fam. Mtge., Ser. A, 6.25%, 7/01/11, GNMA ......   7/04 at 102       783,112
 AA+       1,000        Florida St. Brd. of Ed., Ser. C, 5.85%, 6/01/18 ..............................   6/03 at 101     1,084,820
 AA+         500        Florida St. Brd. of Ed., Pub. Ed., Ser. B, 5.875%, 6/01/24 ...................   6/05 at 101     1,092,070
 AAA       1,000        Florida St. Dept. of Corrections, C.O.P., Okeechobee Correctional Fac.,
           1,000          6.25%, 3/01/15, AMBAC ......................................................   3/05 at 102       556,890
 AA+       1,000        Florida St. Dept. of Trans., 5.80%, 7/01/21 ..................................   7/05 at 101     1,100,530
 AAA       1,000        Florida St. Div. of Bond Fin. Dept. Gen. Svcs. Rev., Dept. of Environ.
           1,000          Preservation, Ser. A, 5.75%, 7/01/11, AMBAC ................................   7/05 at 101     1,082,380
 AAA       1,000        Jacksonville Cap. Impvt. Rev., Gator Bowl Proj., 5.50%, 10/01/14, AMBAC.        10/04 at 101     1,055,060
 AAA       1,000++      Lee Cnty. Trans. Fac. Rev., 5.75%, 10/01/22, MBIA ............................  10/05 at 102     1,068,050
 A-        1,000++      Orlando & Orange Cnty. Expwy., 5.95%, 7/01/23 ................................   7/01 at 102     1,024,120
 Aa        1,000        Orlando Utils. Comn. Wtr. & Elec. Rev., Ser. D, 5.50%, 10/01/20 ..............  10/99 at 100     1,002,320
 AAA       1,000++      Seminole Cnty. Sch. Brd., C.O.P., Ser. A, 6.125%, 7/01/04, MBIA ...............      N/A         1,120,330
 AAA       1,000++      Sunrise Florida Util. Sys. Rev., Ser. A, 5.75%, 10/01/06, AMBAC ...............      N/A         1,109,800
 Baa2      1,000        Volusia Cnty. Ed. Fac. Auth. Rev., 6.125%, 10/15/16 ........................... 10/06 at 102     1,077,880
                                                                                                                       -----------
                                                                                                                        21,065,309
                                                                                                                       ------------
                        PUERTO RICO-24.5%
                        Puerto Rico Elec. Pwr. Auth. Rev.,
 BBB+      1,000++        Ser. T, 6.375%, 7/01/04 .....................................................      N/A         1,131,910
 BBB+      1,000          Ser. U, 6.00%, 7/01/14 ......................................................  7/04 at 102     1,097,980
                        Puerto Rico Pub. Bldg. Auth., Gtd. Pub. Ed. & Hlth. Fac., Ser. M,
 A         1,000          5.50%, 7/01/21 ..............................................................  7/03 at 101.5   1,032,380
 A         1,000          5.75%, 7/01/15 ..............................................................  7/03 at 101.5   1,050,650
                                                                                                                       -----------
                                                                                                                         4,312,920
                                                                                                                       -----------
</TABLE>


                       See Notes to Financial Statements.

                                       5


<PAGE>

<TABLE>
<CAPTION>

================================================================================
                                                                     VALUE
                            DESCRIPTION                            (NOTE 1)
- --------------------------------------------------------------------------------
<S> <C>                                                          <C>
    TOTAL INVESTMENTS-144.0% (COST $22,837,085) ................  $ 25,378,229
    Other assets in excess of liabilities-4.2% .................       743,081
    Liquidation value of preferred stock-(48.2)% ...............    (8,500,000)
                                                                  ------------
    Net Assets Applicable to Common Shareholders-100% ..........  $ 17,621,310
                                                                  ============
</TABLE>

- ----------
 * Rating: using the higher of Standard & Poor's, Moody's or Fitch's rating.
 + Option  call provisions: date (month/year) and  prices of the earliest option
   call  on  redemption. There may be other call provisions at varying prices at
   later dates.
++ This bond is prerefunded. See Glossary for definitions.




<TABLE>
- -----------------------------------------------------------------------------------------------------------------------
<S>          <C>                                                 <C>      <C>
                       THE FOLLOWING ABBREVIATIONS ARE USED IN PORTFOLIO DESCRIPTIONS:

  AMBAC      - American Municipal Bond Assurance Corporation     FSA      - Financial Security Assurance
  C.O.P.     - Certificate of Participation                      GNMA     - Government National Mortgage Association
  ETM        - Escrowed To Maturity                              MBIA     - Municipal Bond Insurance Association
  FGIC       - Financial Guaranty Insurance Company
- ------------------------------------------------------------------------------------------------------------------------
</TABLE>



                       See Notes to Financial Statements.

                                       6


<PAGE>


- --------------------------------------------------------------------------------
THE BLACKROCK FLORIDA INVESTMENT QUALITY
MUNICIPAL TRUST
STATEMENT OF ASSETS AND LIABILITIES
APRIL 30, 1999 (UNAUDITED)
- --------------------------------------------------------------------------------

ASSETS
Investments, at value (cost $22,837,085) (Note 1).........    $25,378,229
Cash .....................................................        423,483
Interest receivable ......................................        367,340
                                                              -----------
                                                               26,169,052
                                                              -----------
LIABILITIES
Investment advisory fee payable (Note 2) .................          7,542
Administration fee payable (Note 2) ......................          2,155
Dividends payable-preferred stock ........................            745
Other accrued expenses ...................................         37,300
                                                              -----------
                                                                   47,742
                                                              -----------
NET INVESTMENT ASSETS ....................................    $26,121,310
                                                              ===========
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 .....................        181,209
 Accumulated net realized loss ...........................       (697,759)
 Net unrealized appreciation .............................      2,541,144
                                                              -----------
Net investment assets, April 30, 1999 ....................    $26,121,310
                                                              ===========
Net assets applicable to common shareholders .............    $17,621,310
                                                              ===========
Net asset value per share:
  ($17,621,310 o/o 1,127,093 shares of
  common stock issued and outstanding) ...................         $15.63
                                                                   ======


- --------------------------------------------------------------------------------
THE BLACKROCK FLORIDA INVESTMENT QUALITY
MUNICIPAL TRUST
STATEMENT OF OPERATIONS
SIX MONTHS ENDED APRIL 30, 1999 (UNAUDITED)
- --------------------------------------------------------------------------------

NET INVESTMENT INCOME
Income
  Interest and discount earned .........   $700,074
                                           --------

Expenses
  Investment advisory ..................     45,538
  Administration .......................     13,011
  Auction agent ........................     10,500
  Directors ............................      7,000
  Reports to shareholders ..............      5,000
  Transfer agent .......................      5,000
  Audit ................................      3,500
  Custodian ............................      2,000
  Legal ................................      2,000
  Miscellaneous ........................      2,136
                                           --------
Total expenses .........................     95,685
                                           --------
Net investment income ..................    604,389
                                           --------

UNREALIZED LOSS
ON INVESTMENTS (NOTE 3)
Net change in unrealized appreciation
 on investments ........................    (85,962)
                                           --------

NET INCREASE IN NET INVESTMENT ASSETS
RESULTING FROM OPERATIONS ..............   $518,427
                                           ========



                       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 ENDED      YEAR ENDED
                                                                                  APRIL 30,         OCTOBER 31,
                                                                                    1999               1998
                                                                              ----------------      -----------
INCREASE (DECREASE) IN NET INVESTMENT ASSETS
<S>                                                                          <C>                  <C>
Operations:
 Net investment income ...................................................      $   604,389        $ 1,178,528
 Net change in unrealized appreciation on investments ....................          (85,962)           912,460
                                                                                -----------        -----------
 Net increase in net investment assets resulting from operations .........          518,427          2,090,988
Dividends and distributions:
 To common shareholders from net investment income .......................         (448,308)          (839,826)
 To preferred shareholders from net investment income ....................         (133,091)          (311,954)
                                                                                -----------        -----------
 Total dividends and distributions .......................................         (581,399)        (1,151,780)
                                                                                -----------        -----------
   Total increase (decrease) .............................................          (62,972)           939,208
NET INVESTMENT ASSETS
Beginning of period ......................................................       26,184,282         25,245,074
                                                                                -----------        -----------
End of period ............................................................      $26,121,310        $26,184,282
                                                                                ===========        ===========
</TABLE>



                       See Notes to Financial Statements.

                                       8


<PAGE>


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

<TABLE>
<CAPTION>
                                                                          SIX MONTHS ENDED
                                                                              APRIL 30,
                                                                                1999
                                                                                ----
<S>                                                                           <C>
PER SHARE OPERATING PERFORMANCE:
Net asset value, beginning of period ...............................          $ 15.69
                                                                              -------
 Net investment income .............................................              .54
 Net realized and unrealized gain (loss) on investments ............             (.08)
                                                                              -------
 Net increase (decrease) from investment operations ................              .46
                                                                              -------
Dividends and distributions:
 Dividends from net investment income to:
   Common shareholders .............................................             (.40)
   Preferred shareholders ..........................................             (.12)
 Distributions from capital gains to:
   Common shareholders .............................................                -
   Preferred shareholders ..........................................                -
 Distributions in excess of net realized gain on investments to:
   Common shareholders .............................................                -
   Preferred shareholders ..........................................                -
                                                                              -------
Total dividends and distributions ..................................             (.52)
                                                                              -------
Net asset value, end of period* ....................................          $ 15.63
                                                                              =======
Per share market value, end of period* .............................          $ 15.0625
                                                                              =======
TOTAL INVESTMENT RETURN+:  .........................................             2.20%
RATIOS TO AVERAGE NET ASSETS OF COMMON
 SHAREHOLDERS++:
Expenses ...........................................................             1.09%+++
Net investment income before preferred stock dividends .............             6.90%+++
Preferred stock dividends ..........................................             1.52%+++
Net investment income available to common shareholders .............             5.38%+++

SUPPLEMENTAL DATA:
Average net assets of common shareholders (in thousands) ...........          $17,675
Portfolio turnover rate ............................................                0%
Net assets of common shareholders, end of period (in thousands).....          $17,621
Asset coverage per share of preferred stock, end of period# ........          $76,830
Preferred stock outstanding (in thousands) .........................          $ 8,500



<CAPTION>
                                                                                 FOR THE YEAR ENDED OCTOBER 31,
                                                                        ---------------------------------------------
                                                                          1998          1997      1996        1995
                                                                          ----          ----     -------     -------
<S>                                                                     <C>           <C>        <C>         <C>
PER SHARE OPERATING PERFORMANCE:
Net asset value, beginning of period ...............................    $ 14.86       $ 14.15    $ 14.01     $ 11.69
                                                                        -------       -------    -------     -------
 Net investment income .............................................       1.05          1.06       1.03        1.05
 Net realized and unrealized gain (loss) on investments ............        .81           .65        .13        2.36
                                                                        -------       -------    -------     -------
 Net increase (decrease) from investment operations ................       1.86          1.71       1.16        3.41
                                                                        -------       -------    -------     -------
Dividends and distributions:
 Dividends from net investment income to:
   Common shareholders .............................................       (.75)         (.72)      (.73)       (.79)
   Preferred shareholders ..........................................       (.28)         (.28)      (.28)       (.30)
 Distributions from capital gains to:
   Common shareholders .............................................          -             -          -           -
   Preferred shareholders ..........................................          -             -          -           -
 Distributions in excess of net realized gain on investments to:
   Common shareholders .............................................          -            **      ( .01)          -
   Preferred shareholders ..........................................          -            **         **           -
                                                                        -------       -------    -------     -------
Total dividends and distributions ..................................     ( 1.03)       ( 1.00)     (1.02)      (1.09)
                                                                        --------      -------    -------     -------
Net asset value, end of period* ....................................    $ 15.69       $ 14.86    $ 14.15     $ 14.01
                                                                        =======       =======    =======     =======
Per share market value, end of period* .............................    $ 15.125      $ 13.3125  $ 12.25     $ 12.625
                                                                        =======       =======    =======     =======
TOTAL INVESTMENT RETURN+:  .........................................      19.70%        14.95%      2.92%      29.29%
RATIOS TO AVERAGE NET ASSETS OF COMMON
 SHAREHOLDERS++:
Expenses ...........................................................       1.31%         1.26%      1.46%       1.44%
Net investment income before preferred stock dividends .............       6.81%         7.43%      7.41%       7.96%
Preferred stock dividends ..........................................       1.80%         1.92%      1.97%       2.28%
Net investment income available to common shareholders .............       5.01%         5.51%      5.44%       5.68%
SUPPLEMENTAL DATA:
Average net assets of common shareholders (in thousands) ...........    $17,299       $16,150    $15,699     $14,759
Portfolio turnover rate ............................................          0%            5%        73%        112%
Net assets of common shareholders, end of period (in thousands).....    $17,684       $16,745    $15,951     $15,788
Asset coverage per share of preferred stock, end of period# ........    $77,017       $74,253    $71,915     $71,437
Preferred stock outstanding (in thousands) .........................    $ 8,500       $ 8,500    $ 8,500     $ 8,500



<CAPTION>
                                                                      FOR THE YEAR
                                                                      ENDED OCTOBER
                                                                           31,
                                                                     -------------
                                                                          1994
                                                                     -------------
<S>                                                                  <C>
PER SHARE OPERATING PERFORMANCE:
Net asset value, beginning of period ...............................  $   14.77
                                                                      ---------
 Net investment income .............................................        .98
 Net realized and unrealized gain (loss) on investments ............     ( 3.02)
                                                                      ---------
 Net increase (decrease) from investment operations ................     ( 2.04)
                                                                      ---------
Dividends and distributions:
 Dividends from net investment income to:
   Common shareholders .............................................       (.79)
   Preferred shareholders ..........................................       (.20)
 Distributions from capital gains to:
   Common shareholders .............................................       (.04)
   Preferred shareholders ..........................................       (.01)
 Distributions in excess of net realized gain on investments to:
   Common shareholders .............................................          -
   Preferred shareholders ..........................................          -
                                                                      ---------
Total dividends and distributions ..................................     (1.04)
                                                                      ---------
Net asset value, end of period* ....................................  $  11.69
                                                                      =========
Per share market value, end of period* .............................  $  10.375
                                                                      =========
TOTAL INVESTMENT RETURN+:  .........................................    (20.98%)
RATIOS TO AVERAGE NET ASSETS OF COMMON
 SHAREHOLDERS++:
Expenses ...........................................................      1.50%
Net investment income before preferred stock dividends .............      7.34%
Preferred stock dividends ..........................................      1.48%
Net investment income available to common shareholders .............      5.86%
SUPPLEMENTAL DATA:
Average net assets of common shareholders (in thousands) ...........  $ 15,015
Portfolio turnover rate ............................................       206%
Net assets of common shareholders, end of period (in thousands).....  $ 13,174
Asset coverage per share of preferred stock, end of period# ........  $127,494
Preferred stock outstanding (in thousands) .........................  $  8,500
</TABLE>

- ----------
  * 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.
  # 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. ORGANIZATION &              The  BlackRock  Florida  Investment  Quality
ACCOUNTING                          Municipal Trust (the "Trust") was  organized
POLICIES                            in Massachusetts on April 15, 1993 as a non-
                                    diversified closed-end management investment
company.  The Trust's  investment  objective  is to manage a  portfolio  of high
quality  securities  while  providing  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.


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 BlackRock Advisors,  Inc.,
which  is an  indirect  majority-owned  subsidiary  of PNC  Bank,  N.A.,  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                Sales  of  investment  securities  other  than
SECURITIES                        short-term  investments, for  the  six  months
                                  ended April 30, 1999 aggregated $35,000. There
were no purchases for the same period.

      The  federal income tax basis of the Trust's investments at April 30, 1999
was   substantially   the   same   as  for  financial  reporting  purposes  and,
accordingly, net and gross unrealized appreciation was $2,541,144.

      For   federal   income   tax  purposes,  the  Trust  had  a  capital  loss
carryforward  at October 31, 1998 of approximately $699,000 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, 1999, the Adviser owned 7,093 shares.
As of April  30,  1999  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 3.00% to
3.75% during the six months ended April 30, 1999.

      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 restriction.


NOTE  5.  DIVIDENDS                Subsequent  to  April 30, 1999,  the Board of
                                   Directors  of  the  Trust declared  dividends
from  undistributed  earnings of 0.0663 per common share payable May 28, 1999 to
shareholders of record on May 14, 1999.


      For  the  period  May  1,  1999 through May 31, 1999 dividends declared on
Preferred  Stock  totaled  $23,552  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  are  automatically enrolled to have all distributions of dividends
and  capital  gains reinvested by State Street Bank and Trust Company (the "Plan
Agent")  in  Trust  shares  pursuant  to the Plan. Shareholders who elect not to
participate  in the Plan will receive all distributions in cash paid by check in
United  States  dollars mailed directly to the shareholders of record (or if the
shares  are  held  in  street or other nominee name, then to the nominee) by the
transfer agent, as dividend disbursing agent.

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

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

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

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


                                       12


<PAGE>


- --------------------------------------------------------------------------------
            THE BLACKROCK FLORIDA INVESTMENT QUALITY MUNICIPAL TRUST
                             ADDITIONAL INFORMATION
- --------------------------------------------------------------------------------
     YEAR  2000  READINESS  DISCLOSURE. The Trust is currently in the process of
evaluating  its  information technology infrastructure for Year 2000 compliance.
Substantially  all  of  the  Trust's  information  systems  are  supplied by the
Adviser.  The  Adviser  has  advised  the  Trust that it is currently evaluating
whether  such systems are year 2000 compliant and that it expects to incur costs
of   up  to  approximately  five  hundred  thousand  dollars  to  complete  such
evaluation  and  to make any modifications to its systems as may be necessary to
achieve  Year  2000  compliance.  The  Adviser has advised the Trust that it has
fully  tested its systems for Year 2000 compliance. The Trust may be required to
bear  a portion of such cost incurred by the Adviser in this regard. The Adviser
has  advised  the  Trust  that it does not anticipate any material disruption in
the  operations  of  the  Trust  as  a  result  of any failure by the Adviser to
achieve  Year 2000 compliance. There can be no assurance that the costs will not
exceed  the  amount  referred  to  above or that the Trust will not experience a
disruption in operations.

     The  Adviser  has advised the Trust that it is in the process of evaluating
the  Year 2000 compliance of various suppliers of the Adviser and the Trust. The
Adviser  has  advised  the Trust that it has communicated with such suppliers to
determine  their Year 2000 compliance status and the extent to which the Adviser
or  the  Trust  could be affected by any supplier's Year 2000 compliance issues.
To  date,  the  Adviser  has  received  responses  from  all such suppliers with
respect  to  their  Year 2000 compliance, and there can be no assurance that the
systems  of  such  suppliers,  who  are beyond the Trust's control, will be Year
2000  compliant.  In  the event that any of the Trust's significant suppliers do
not  successfully  and timely achieve Year 2000 compliance, the Trust's business
or  operations  could  be  adversely affected. The Adviser has advised the Trust
that  it  is  in  the  process  of  preparing  a  contingency plan for Year 2000
compliance  by  its  suppliers.  There can be no assurance that such contingency
plan will be successful in preventing a disruption of the Trust's operations.

     The  Trust  is  designating  this  disclosure  as  its  Year 2000 readiness
disclosure  for  all  purposes  under  the  Year  2000 Information and Readiness
Disclosure  Act  and  the  foregoing  information  shall  constitute a Year 2000
statement for purposes of that Act.

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

The  Annual  Meeting  of Trust Shareholders was held May 19, 1999 to vote on the
following matters:
  (1) To elect three Directors as follows:


      DIRECTOR                            CLASS      TERM     EXPIRING
      --------                           -------     ----     --------
      Frank J. Fabozzi ..............      II     3 years       2002
      Walter F. Mondale .............      II     3 years       2002
      Ralph L. Schlosstein ..........      II     3 years       2002

      Directors whose term of office continues beyond this meeting are Andrew F.
      Brimmer,  Kent  Dixon,  Laurence  D.  Fink,  James  Grosfeld,  Richard  E.
      Cavanagh, and James Clayburn La Force, Jr.

  (2) To  ratify  the  selection of  Deloitte & Touche LLP as independent public
      accountants of the Trust for the fiscal year ending October 31, 1999.

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

<TABLE>
<CAPTION>
                                                         VOTES FOR*     VOTES AGAINST*     ABSTENTIONS*
                                                        ------------   ----------------   -------------
<S>                                                        <C>              <C>               <C>
      Frank J. Fabozzi ...............................         306             -                 -
      Walter F. Mondale ..............................     955,449             -              25,006
      Ralph L. Schlosstein ...........................     964,704             -              15,751
      Ratification of Deloitte & Touche LLP ..........     964,640          11,875             3,940
</TABLE>

- ----------
*The  votes represent common and preferred shareholders voting as a single class
 except for  the  election  of Frank J. Fabozzi who was elected by the preferred
 shareholders.


                                       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")  is  an  SEC-registered
investment  adviser.  BlackRock  and  its  affiliates currently manage over $141
billion  on  behalf  of  taxable  and  tax-exempt  clients worldwide. Strategies
include  fixed  income,  equity  and  cash and may incorporate both domestic and
international   securities.   Domestic   fixed  income  strategies  utilize  the
government,  mortgage,  corporate  and municipal bond sectors. BlackRock manages
twenty-one  closed-end  funds that are traded on either the New York or American
stock  exchanges,  and  a  $25 billion family of open-end equity and bond funds.
Current accounts number over 450, domiciled in the United States and overseas.

WHAT CAN THE TRUST INVEST IN?

Under  normal  conditions, the Trust expects to continue to manage its assets so
that  at least 80% of its investments are rated at least investment grade ("BBB"
by  Standard  &  Poor's  or "Baa" by Moody's Investor Services) and up to 20% of
its  assets  may  instead  be  deemed  to be of equivalent credit quality by the
Adviser.  The  Trust  intends  to  invest  substantially  all of the assets in a
portfolio  of investment grade 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 or other qualifying issuers.
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  Trust  in  a declining rate environment, but can cause net
assets  to  decline  faster  in  a rapidly rising interest rate environment. The
Trust  may  reduce,  or unwind, the amount of leverage employed should 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 a fund.

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

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

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

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


                                       16


<PAGE>


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


<TABLE>
<CAPTION>

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

TERM TRUSTS
The BlackRock 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
- ---------------------------------------------------------------------------------------

<CAPTION>
                                                                  STOCK      MATURITY
                                                                  SYMBOL       DATE
PERPETUAL TRUSTS                                                 --------   ---------
<S>                                                                <C>         <C>
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,  Inc.  ("BlackRock") is an SEC-registered
investment  adviser.  BlackRock  and  its  affiliates currently manage over $141
billion  on  behalf  of  taxable  and  tax-exempt  clients worldwide. Strategies
include  fixed  income,  equity  and  cash and may incorporate both domestic and
international  securities.  BlackRock  manages  twenty-one closed-end funds that
are  traded  on  either  the  New  York  or  American stock exchanges, and a $25
billion  family  of open-end equity and bond funds. Current accounts number over
450, domiciled in the United States and overseas.

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

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

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

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










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

                                       18


<PAGE>

- --------------
  BlackRock
- --------------

DIRECTORS
Laurence D. Fink, CHAIRMAN
Andrew F. Brimmer
Richard E. Cavanagh
Kent Dixon
Frank J. Fabozzi
James 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, NJ 07102-4077

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

AUCTION AGENT
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, 1999 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, NJ 07102-4077
                                 (800) 227-7BFM


[GRAPHIC OMITTED] Printed on recycled pap                          09247C-10-7
                                                                   09247C-20-6

        -------------
         BlackRock
THE     -------------
FLORIDA
INVESTMENT QUALITY
MUNICIPAL TRUST
==========================
SEMI-ANNUAL REPORT
APRIL 30, 1999


                                [GRAPHIC OMITTED






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