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  • USGS Surface-Water Monthly Statistics for the Nation

    The statistics generated from this site are based on approved daily-mean data and may not match those published by the USGS in official publications. The user is responsible for assessment and use of statistics from this site. For more details on why the statistics may not match, click here.

    USGS 09421500 COLORADO RV BLW HOOVER DAM, AZ-NV


    Clark County, Nevada
    Hydrologic Unit Code 15010005
    Latitude  36°00'55", Longitude 114°44'16" NAD27
    Drainage area 171,700  square miles
    Gage datum 675.49 feet above NGVD29
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    00060, Discharge, cubic feet per second,
    YEAR Monthly mean in ft3/s   (Calculation Period: 1934-04-01 -> 2011-09-30)
    Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    1934 7,39218,06010,6102,7832,6313,3123,1093,5194,444
    1935 5,3063,8207,0457,2979,22216,53011,47010,1809,9899,8349,6164,876
    1936 4,8415,6599,1029,8819,09810,26011,3209,9619,3417,3786,0565,128
    1937 4,7595,6198,3639,3148,8989,87210,88010,8009,3508,2316,9466,530
    1938 6,3476,5097,5679,7309,01510,48011,06010,3409,34812,59012,5206,482
    1939 12,54023,09010,15010,5709,74510,63011,25011,67010,22011,00011,95011,420
    1940 11,0908,08010,32010,4609,3569,78610,95010,99011,68012,95013,04012,940
    1941 9,5839,0058,9778,70823,34030,41015,46023,24026,49026,68030,53033,670
    1942 32,70027,91023,18021,87021,85026,23020,90013,77017,22018,91018,40018,810
    1943 18,04014,82015,78015,38016,74017,48018,04016,95017,51019,17019,81020,770
    1944 21,18022,07021,26019,67019,77018,44018,07019,69019,02019,93019,93019,500
    1945 20,15019,80020,33017,52017,37017,05014,00014,39014,61017,56017,51017,270
    1946 18,15018,86016,33014,66014,68013,73013,62012,21012,75013,93012,81013,980
    1947 16,00015,95015,54014,43015,47015,44015,05014,07014,17013,47014,79017,290
    1948 19,02019,78018,70020,20018,57018,08018,79015,74016,49014,91017,28018,280
    1949 19,71021,86021,00019,80016,69016,57016,59017,27019,17019,13017,17020,130
    1950 20,77020,38020,26018,31018,22016,13015,97014,18013,84013,79013,70013,830
    1951 15,09013,62013,98013,39014,61011,61012,74014,74014,25012,29013,74013,480
    1952 17,39021,08022,30023,27024,92024,06021,20021,26022,85021,00020,41021,750
    1953 19,95018,79017,02016,32016,22013,77014,58015,74016,26013,04012,58013,230
    1954 13,59012,99014,81016,38017,90015,62016,70014,44015,68012,62011,36012,050
    1955 11,79012,69014,73014,83015,08011,42013,77012,83010,4408,5558,1908,008
    1956 9,4838,66912,51014,12012,17013,18012,72011,31010,2607,9639,3127,436
    1957 8,6948,46212,01014,96012,50013,92012,79012,78013,19011,33016,10017,580
    1958 20,25015,22023,34024,76018,14013,76014,55014,82013,31011,84012,53014,200
    1959 12,93011,66013,46015,40015,44012,77013,80014,53012,99011,26010,2009,303
    1960 10,2208,89811,55015,27013,92017,05016,00015,60013,5409,0478,2189,296
    1961 9,60510,39015,22015,20015,34014,14013,36012,02011,6008,7708,6847,911
    1962 7,8338,95112,98015,15014,42013,43013,40013,94012,03010,32010,3009,857
    1963 7,84310,35014,17014,53014,82012,83014,77013,93012,1708,5777,7999,515
    1964 10,29010,13013,01014,44013,73012,08014,09011,89010,4609,5397,4817,631
    1965 7,9588,96812,78011,74014,18013,20013,25013,29011,0108,6937,0206,888
    1966 4,1077,92012,76014,21014,43013,17014,45013,65011,2907,5947,9517,285
    1967 8,12910,34013,77012,96014,46013,13013,53012,2808,3079,3659,3525,783
    1968 6,4378,61513,82014,84013,87012,64012,31011,27011,1507,9087,6768,987
    1969 8,9279,93413,41015,03013,57012,66012,56011,27010,3908,5047,1547,374
    1970 9,7999,64412,25015,44015,07013,11012,89011,0008,5209,4877,5558,084
    1971 9,12011,94013,98015,35014,00012,45012,03012,06010,4708,1757,6028,235
    1972 9,23211,06014,71014,74014,08013,37012,50012,30010,6608,4136,6736,166
    1973 9,4509,9689,93214,53016,44011,48013,39013,93011,0809,1048,8489,290
    1974 7,09810,60014,05015,99015,61014,79013,78015,41011,9909,9808,4686,915
    1975 8,38111,11012,18014,64015,75013,56013,50013,09011,2208,9288,1658,146
    1976 8,2758,61514,79014,78015,11012,04013,70014,54010,2305,7125,1157,920
    1977 4,07310,95013,89016,60012,37012,10014,52014,2507,8866,9687,7739,152
    1978 3,8207,72812,04015,15013,98010,99013,51014,51011,5708,1656,3075,983
    1979 3,5405,24610,05011,82016,43014,54013,95014,24011,8108,6259,1248,218
    1980 7,6684,65515,12018,98020,50017,76019,35019,42014,77016,05014,06014,400
    1981 10,0609,65113,25017,07013,94014,03014,05014,88011,1306,1706,5206,460
    1982 7,5289,87412,88017,52013,71010,67011,96012,4306,6196,3846,3767,542
    1983 19,1306,56610,30017,81019,77031,70041,87039,39036,75034,25029,41027,520
    1984 30,71030,68028,79026,29030,70034,89035,53030,98027,25025,82025,94026,310
    1985 28,49028,49022,80022,36023,35027,98028,22027,39021,52016,82018,41019,710
    1986 26,32018,81026,25023,65033,33029,08026,51023,19022,71019,17017,76023,120
    1987 26,37020,51018,49016,27016,10014,34013,75016,62014,86011,1609,21310,390
    1988 13,49012,92013,45016,75014,31015,34014,52016,50011,9208,5448,6119,369
    1989 8,2429,52414,47016,39018,28016,24014,66014,16010,90010,2309,8878,703
    1990 8,8548,42515,40015,48015,50016,23017,39016,58010,4308,9668,25410,620
    1991 8,0409,77512,56013,18016,10016,27016,45015,00013,14010,9608,9747,779
    1992 4,9007,3879,96412,12015,14014,74015,36014,6109,9728,3287,6788,738
    1993 4,6261,1065,47413,15017,25013,84015,12011,5808,67610,7908,97112,050
    1994 9,95810,48016,31018,52016,85013,99013,52014,5809,6879,08012,2709,622
    1995 5,5978,19014,63016,74014,20014,52013,12015,57011,3809,9595,61211,790
    1996 9,67513,32016,47021,90019,47017,83015,72014,21010,6708,1277,5379,985
    1997 14,37019,29019,08019,33020,12016,97017,36017,85015,3608,51011,35014,410
    1998 19,98021,22019,64018,85018,46016,58018,23015,18016,30011,72015,99019,890
    1999 13,84013,19016,44018,29019,44017,73015,59014,66011,96013,95015,57012,140
    2000 12,21012,93016,84020,66020,12016,20016,28015,0609,6979,57313,06014,020
    2001 11,20013,87015,85019,15016,74018,15016,28014,44011,7308,38611,21012,320
    2002 11,42014,12018,65018,69019,03017,40016,38015,37011,1608,53610,50011,880
    2003 10,60010,94015,57019,12016,54015,43015,69012,1009,8248,75410,71010,140
    2004 10,30014,01015,38017,63018,29016,71015,49012,4209,5425,9328,42910,440
    2005 5,4866,1486,94817,19016,40015,11015,85012,93010,47010,41011,3408,611
    2006 9,67010,99013,50016,64017,43017,41015,73013,31010,6409,1678,81810,090
    2007 10,39011,65015,78018,37016,68016,10015,44013,07011,0209,2729,6677,751
    2008 10,93011,45017,01019,30018,06015,96014,14013,17010,7308,26811,3507,371
    2009 12,05012,23016,86019,74015,90012,60013,66013,0309,6489,96510,89010,500
    2010 10,3107,21514,46015,69015,63016,92015,31013,48012,74010,37013,45010,740
    2011 8,77711,42016,37018,12016,30015,79016,29013,52011,260
    Mean of
    monthly
    Discharge
    12,000 12,500 14,900 16,200 16,400 15,700 15,500 14,800 12,900 11,400 11,500 11,800

    ** No Incomplete data have been used for statistical calculation