USGS Water-Year Summary 2018
09429600 COLORADO RIVER BELOW LAGUNA DAM, AZ-CA
LOCATION - Lat 32°48'44", long 114°30'51" referenced to North American Datum of 1927, in SE 1/4 NE 1/4 sec.35, T.15 S., R.24 E., Imperial County, CA, Hydrologic Unit 15030107, San Bernardino meridian, on right bank 1.4 mi downstream from Laguna Dam, 2.8 mi northeast of Bard, CA, and 10 mi northeast of Yuma, AZ.
DRAINAGE AREA - 188,600 mi² of which 4,000 mi² probably is noncontributing, the Great Divide basin in southern Wyoming is noncontributing.
PERIOD OF RECORD - December 1971 to current year.
GAGE - Water-stage recorder. Datum of gage is 120.83 ft (revised, 2010) above sea level (Bureau of Reclamation Benchmark).
EXTREMES FOR PERIOD OF RECORD - Maximum daily discharge of 30,900 ft³/s on August 19, 1983; minimum daily discharge of 71 ft³/s on May 29, 1973.