<PAGE> PAGE 1
000 B000000 11/30/1999
000 C000000 0001092896
000 D000000 N
000 E000000 NF
000 F000000 Y
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000 I000000 6.1
000 J000000 A
001 A000000 COLONIAL CALIFORNIA MUNICIPAL FUND
001 B000000 811-9537
001 C000000 6174263750
002 A000000 ONE FINANCIAL CENTER
002 B000000 BOSTON
002 C000000 MA
002 D010000 02111
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 N
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008 B000001 A
008 C000001 801-2019
008 D010001 BOSTON
008 D020001 MA
008 D030001 02111
011 A000001 PAINWEBBER INCORPORATED
011 B000001 8-16267
011 C010001 NEW YORK
011 C020001 NY
011 C030001 10019
011 A000002 A.G. EDWARDS & SONES, INC.
011 B000002 8-13580
011 C010002 ST. LOUIS
011 C020002 MO
011 C030002 63103
011 A000003 THOMSON MCKINNON SECURITIES INC.
011 B000003 8-14450
011 C010003 NEW YORK
011 C020003 NY
011 C030003 10005
011 A000004 DAN BOSWORTH INCORPORATED
011 B000004 8-3259
011 C010004 MINNEAPOLIS
011 C020004 MN
011 C030004 55402
013 A000001 PRICEWATERHOUSECOOPERS
013 B010001 BOSTON
013 B020001 MA
<PAGE> PAGE 2
013 B030001 02110
015 A000001 CHASE MANHAT TAN BANK
015 B000001 C
015 C010001 NEW YORK
015 C020001 NY
015 C030001 10003
015 E010001 X
018 000000 Y
019 A000000 Y
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020 A000001 PAINE WEBBER INC.
020 B000001 13-2638166
020 C000001 20
020 A000002 STONE & YOUNGBERG
020 B000002 94-1052555
020 C000002 16
020 A000003 PIPER, JAFFRAY & HOPWOOD INC.
020 B000003 41-0953246
020 C000003 3
020 A000004 EJ DELLAROSA
020 B000004 13-4946705
020 C000004 3
020 A000005 CAIN BROTHERS, SHATTUCK & CO.
020 B000005 13-3143546
020 C000005 2
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022 C000004 0
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022 C000005 6898
<PAGE> PAGE 3
022 D000005 2300
022 A000006 LEHMAN BROS.
022 B000006 13-2518466
022 C000006 5000
022 D000006 1000
022 A000007 AG EDWARDS & SONS
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022 C000007 2200
022 D000007 2200
022 A000008 STONE & YOUNGBERG
022 B000008 94-1052555
022 C000008 4127
022 D000008 0
022 A000009 ADVEST, INC.
022 B000009 06-0950348
022 C000009 3893
022 D000009 0
022 A000010 SUTRO & CO. INC.
022 B000010 94-1704902
022 C000010 3104
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<PAGE> PAGE 4
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<PAGE> PAGE 5
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<PAGE> PAGE 6
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<PAGE> PAGE 7
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<PAGE> PAGE 8
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SIGNATURE GAIL KNUDSEN
TITLE VICE PRESIDENT
WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0001092896
<NAME> Colonial California Insured Municipal Fund
<SERIES>
<NUMBER> 1
<NAME> CCAIMF
<MULTIPLIER> 1,000
<S> <C>
<PERIOD-TYPE> 12-MOS
<FISCAL-YEAR-END> NOV-30-1999
<PERIOD-START> DEC-01-1998
<PERIOD-END> NOV-30-1999
<INVESTMENTS-AT-COST> 39027
<INVESTMENTS-AT-VALUE> 38877
<RECEIVABLES> 482
<ASSETS-OTHER> 72
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 39431
<PAYABLE-FOR-SECURITIES> 4927
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 122
<TOTAL-LIABILITIES> 5049
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 34408
<SHARES-COMMON-STOCK> 2407
<SHARES-COMMON-PRIOR> 0
<ACCUMULATED-NII-CURRENT> 124
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> 0
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> (150)
<NET-ASSETS> 34382
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 141
<OTHER-INCOME> 0
<EXPENSES-NET> 17
<NET-INVESTMENT-INCOME> 124
<REALIZED-GAINS-CURRENT> 0
<APPREC-INCREASE-CURRENT> (150)
<NET-CHANGE-FROM-OPS> (26)
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> 0
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 2407
<NUMBER-OF-SHARES-REDEEMED> 0
<SHARES-REINVESTED> 0
<NET-CHANGE-IN-ASSETS> 34382
<ACCUMULATED-NII-PRIOR> 0
<ACCUMULATED-GAINS-PRIOR> 0
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 11
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 50
<AVERAGE-NET-ASSETS> 34537
<PER-SHARE-NAV-BEGIN> 14.330
<PER-SHARE-NII> 0.022
<PER-SHARE-GAIN-APPREC> (0.062)
<PER-SHARE-DIVIDEND> 0
<PER-SHARE-DISTRIBUTIONS> 0
<RETURNS-OF-CAPITAL> (0.030)
<PER-SHARE-NAV-END> 14.290
<EXPENSE-RATIO> 0.55
[AVG-DEBT-OUTSTANDING] 0
[AVG-DEBT-PER-SHARE] 0
</TABLE>
(a) Not applicable.
(b) Effective October 26, 1999 2,400,000 common shares of beneficial interest
were offered by Colonial California Insured Municipal Fund (Fund). Such
shares are offered at net asset value without any initial or contingent
deferred sales charges or Rule 12b-1 fees.
[PricewaterhouseCoopers logo]
PricewaterhouseCoopers LLP
160 Federal Street
Boston, MA 02110-9862
To the Shareholders and Trustees of Colonial California Insured Municipal Fund
In planning and performing our audit of the financial statements of the Colonial
California Insured Municipal Fund (the "Fund") for the period ended November 30,
1999, we considered its internal control, including control activities for
safeguarding securities, in order to determine our auditing procedures for the
purpose of expressing our opinion on the financial statements and to comply with
the requirements of Form N-SAR, and not to provide assurance on internal
control.
The management of the Fund is responsible for establishing and maintaining
internal control. In fulfilling this responsibility, estimates and judgments by
management are required to assess the expected benefits and related costs of
controls. Generally, controls that are relevant to an audit pertain to the
entity's objective of preparing financial statements for external purposes that
are fairly presented in conformity with generally accepted accounting
principles. Those controls include the safeguarding of assets against
unauthorized acquisition, use or disposition.
Because of inherent limitations in internal control, errors or fraud may occur
and not be detected. Also, projection of any evaluation of internal control to
future periods is subject to the risk that it may become inadequate because of
changes in conditions or that the effectiveness of the design and operation may
deteriorate.
Our consideration of internal control would not necessarily disclose all matters
in internal control that might be material weaknesses under standards
established by the American Institute of Certified Public Accountants. A
material weakness is a condition in which the design or operation of one or more
of the internal control components does not reduce to a relatively low level the
risk that misstatements caused by error or fraud in amounts that would be
material in relation to the financial statements being audited may occur and not
be detected within a timely period by employees in the normal course of
performing their assigned functions. However, we noted no matters involving
internal control and its operation, including controls for safeguarding
securities, that we consider to be material weaknesses as defined above as of
November 30, 1999.
This report is intended solely for the information and use of management and the
Trustees of Colonial California Insured Municipal Fund and the Securities and
Exchange Commission and is not intended to be and should not be used by anyone
other than these specified parties.
PricewaterhouseCoopers LLP
Boston, MA
January 12, 2000
