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Water-Year Summary for Site 09423500

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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Available Parameters
00065 Gage height(Max.)  

Water year 2023: 2022-10-01 to 2023-09-30
 
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USGS Water-Year Summary 2023
09423500 COLORADO RIVER AT NEEDLES, CA
LOCATION - Lat 34°51'06", long 114°36'33" referenced to North American Datum of 1927, in SE 1/4 SE 1/4 sec.19, T.9 N., R.23 E., San Bernardino County, CA, Hydrologic Unit 15030101, San Bernardino meridian, on right bank at Needles, 15 mi upstream from Bureau of Reclamation gaging station near Topock, AZ, 30 mi downstream from Davis Dam, and 97 mi downstream from Hoover Dam.
DRAINAGE AREA - 174,500 mi², of which 4,000 mi² is noncontributing, in the Great Divide basin in southern Wyoming.
SURFACE-WATER RECORDS
PERIOD OF RECORD - April 1931 to current year (mean elevations through September 1987; maximum elevations thereafter).
REVISED RECORDS - WSP 1119: 1931-47. WDR AZ-89-1: 1983-88.
GAGE - Water-stage recorder.
REMARKS - Record is rated good except for estimated days and < days, which are rated poor. Flow regulated by Lake Mead since February 1, 1935, and by Lake Mohave since January 17, 1950.
EXTREMES FOR PERIOD OF RECORD - Maximum elevation, 475.77 ft November 30, 1944; minimum recorded elevation, 455.37 ft for numerous days since December 2005.