<PAGE> PAGE 1
000 A000000 08/31/98
000 C000000 0000885408
000 D000000 N
000 E000000 NF
000 F000000 Y
000 G000000 N
000 H000000 N
000 I000000 3.0
000 J000000 U
001 A000000 DREYFUS BASIC U.S. GOVERNMENT MONEY MARKET
001 B000000 811-6606
001 C000000 2129226774
002 A000000 200 PARK AVENUE
002 B000000 NEW YORK
002 C000000 NY
002 D010000 10166
003 000000 N
004 000000 N
005 000000 N
006 000000 N
007 A000000 N
007 B000000 0
018 000000 Y
019 A000000 Y
019 B000000 160
019 C000000 DREYFUSFAM
022 A000001 UBS AG
022 B000001 13-2932996
022 C000001 3639320
022 D000001 0
022 A000002 J.P. MORGAN SECURITIES INC.
022 B000002 13-3224016
022 C000002 1836510
022 D000002 0
022 A000003 DONALDSON, LUFKIN & JENRETTE SECURITIES CORP.
022 B000003 13-2741729
022 C000003 1834952
022 D000003 0
022 A000004 BARCLAYS DE ZOETE WEDD SECURITIES, INC.
022 B000004 13-3551367
022 C000004 1666866
022 D000004 0
022 A000005 LEHMAN BROTHERS INC.
022 B000005 13-2518466
022 C000005 1069055
022 D000005 0
022 A000006 MORGAN STANLEY DEAN WITTER INCORPORATED
022 B000006 13-2655998
022 C000006 783664
022 D000006 0
022 A000007 CS FIRST BOSTON CORPORATION
<PAGE> PAGE 2
022 B000007 13-5659685
022 C000007 290929
022 D000007 0
022 A000008 GOLDMAN, SACHS & CO.
022 B000008 13-5108880
022 C000008 139988
022 D000008 0
022 A000009 AUBREY G. LANSTON & CO. INC.
022 B000009 13-5552129
022 C000009 128000
022 D000009 0
022 A000010 CIBC OPPENHEIMER
022 B000010 13-5942430
022 C000010 100000
022 D000010 0
023 C000000 11647340
023 D000000 26995
024 000000 N
028 A010000 73435
028 A020000 5609
028 A030000 0
028 A040000 97049
028 B010000 91984
028 B020000 5201
028 B030000 0
028 B040000 138849
028 C010000 81699
028 C020000 4890
028 C030000 0
028 C040000 85079
028 D010000 96063
028 D020000 5379
028 D030000 0
028 D040000 121313
028 E010000 71436
028 E020000 5040
028 E030000 0
028 E040000 87283
028 F010000 85512
028 F020000 5050
028 F030000 0
028 F040000 82254
028 G010000 500129
028 G020000 31169
028 G030000 0
028 G040000 611827
028 H000000 0
049 000000 N
050 000000 N
051 000000 N
052 000000 N
<PAGE> PAGE 3
053 A000000 Y
053 B000000 Y
053 C000000 N
055 A000000 Y
055 B000000 N
056 000000 N
057 000000 N
062 A000000 Y
062 B000000 0.0
062 C000000 85.3
062 D000000 13.7
062 E000000 0.0
062 F000000 0.0
062 G000000 0.0
062 H000000 0.0
062 I000000 0.0
062 J000000 0.0
062 K000000 0.0
062 L000000 0.0
062 M000000 0.0
062 N000000 0.0
062 O000000 0.0
062 P000000 0.0
062 Q000000 0.0
062 R000000 0.0
063 A000000 85
063 B000000 0.0
064 A000000 N
070 A010000 Y
070 A020000 Y
070 B010000 N
070 B020000 N
070 C010000 N
070 C020000 N
070 D010000 N
070 D020000 N
070 E010000 N
070 E020000 N
070 F010000 N
070 F020000 N
070 G010000 N
070 G020000 N
070 H010000 N
070 H020000 N
070 I010000 N
070 I020000 N
070 J010000 Y
070 J020000 N
070 K010000 N
070 K020000 N
070 L010000 N
<PAGE> PAGE 4
070 L020000 N
070 M010000 N
070 M020000 N
070 N010000 N
070 N020000 N
070 O010000 Y
070 O020000 N
070 P010000 Y
070 P020000 N
070 Q010000 N
070 Q020000 N
070 R010000 N
070 R020000 N
071 A000000 0
071 B000000 0
071 C000000 0
071 D000000 0
072 A000000 6
072 B000000 35449
072 C000000 0
072 D000000 0
072 E000000 0
072 F000000 3145
072 G000000 0
072 H000000 0
072 I000000 628
072 J000000 52
072 K000000 0
072 L000000 14
072 M000000 14
072 N000000 42
072 O000000 1
072 P000000 0
072 Q000000 0
072 R000000 16
072 S000000 5
072 T000000 0
072 U000000 0
072 V000000 0
072 W000000 10
072 X000000 3927
072 Y000000 1065
072 Z000000 32587
072AA000000 0
072BB000000 1
072CC010000 0
072CC020000 0
072DD010000 32773
072DD020000 0
072EE000000 0
073 A010000 0.0262
<PAGE> PAGE 5
073 A020000 0.0000
073 B000000 0.0000
073 C000000 0.0000
074 A000000 1130
074 B000000 167686
074 C000000 1047626
074 D000000 0
074 E000000 0
074 F000000 0
074 G000000 0
074 H000000 0
074 I000000 0
074 J000000 0
074 K000000 0
074 L000000 11871
074 M000000 0
074 N000000 1228313
074 O000000 0
074 P000000 274
074 Q000000 0
074 R010000 0
074 R020000 0
074 R030000 0
074 R040000 109
074 S000000 0
074 T000000 1227930
074 U010000 1228548
074 U020000 0
074 V010000 1.00
074 V020000 0.00
074 W000000 0.9995
074 X000000 10536
074 Y000000 0
075 A000000 1247551
075 B000000 0
076 000000 0.00
077 A000000 N
SIGNATURE MICHAEL PETRUCELLI
TITLE ASSISTANT TREASURER
<TABLE> <S> <C>
<ARTICLE> 6
<CIK> 0000885408
<NAME> DREYFUS BASIC U.S. GOVERNMENT MONEY MARKET FUND
<MULTIPLIER> 1000
<S> <C>
<PERIOD-TYPE> 6-MOS
<FISCAL-YEAR-END> FEB-28-1999
<PERIOD-END> AUG-31-1998
<INVESTMENTS-AT-COST> 1215312
<INVESTMENTS-AT-VALUE> 1215312
<RECEIVABLES> 11871
<ASSETS-OTHER> 1130
<OTHER-ITEMS-ASSETS> 0
<TOTAL-ASSETS> 1228313
<PAYABLE-FOR-SECURITIES> 0
<SENIOR-LONG-TERM-DEBT> 0
<OTHER-ITEMS-LIABILITIES> 383
<TOTAL-LIABILITIES> 383
<SENIOR-EQUITY> 0
<PAID-IN-CAPITAL-COMMON> 1228548
<SHARES-COMMON-STOCK> 1228548
<SHARES-COMMON-PRIOR> 1309078
<ACCUMULATED-NII-CURRENT> 0
<OVERDISTRIBUTION-NII> 0
<ACCUMULATED-NET-GAINS> (618)
<OVERDISTRIBUTION-GAINS> 0
<ACCUM-APPREC-OR-DEPREC> 0
<NET-ASSETS> 1227930
<DIVIDEND-INCOME> 0
<INTEREST-INCOME> 35449
<OTHER-INCOME> 0
<EXPENSES-NET> 2862
<NET-INVESTMENT-INCOME> 32587
<REALIZED-GAINS-CURRENT> (1)
<APPREC-INCREASE-CURRENT> 0
<NET-CHANGE-FROM-OPS> 32586
<EQUALIZATION> 0
<DISTRIBUTIONS-OF-INCOME> (32773)
<DISTRIBUTIONS-OF-GAINS> 0
<DISTRIBUTIONS-OTHER> 0
<NUMBER-OF-SHARES-SOLD> 500128
<NUMBER-OF-SHARES-REDEEMED> (611827)
<SHARES-REINVESTED> 31169
<NET-CHANGE-IN-ASSETS> (80718)
<ACCUMULATED-NII-PRIOR> 187
<ACCUMULATED-GAINS-PRIOR> (617)
<OVERDISTRIB-NII-PRIOR> 0
<OVERDIST-NET-GAINS-PRIOR> 0
<GROSS-ADVISORY-FEES> 3145
<INTEREST-EXPENSE> 0
<GROSS-EXPENSE> 3927
<AVERAGE-NET-ASSETS> 0
<PER-SHARE-NAV-BEGIN> 1.00
<PER-SHARE-NII> .026
<PER-SHARE-GAIN-APPREC> .00
<PER-SHARE-DIVIDEND> (.26)
<PER-SHARE-DISTRIBUTIONS> .00
<RETURNS-OF-CAPITAL> 0
<PER-SHARE-NAV-END> 1.00
<EXPENSE-RATIO> .005
<AVG-DEBT-OUTSTANDING> 0
<AVG-DEBT-PER-SHARE> 0
</TABLE>