USGS Water-Year Summary 2017
10251300 Amargosa River at Tecopa, CA
LOCATION - Lat 35°50'58", long 116°13'51" referenced to North American Datum of 1983, in SE 1/4 NW 1/4 sec.09, T.20 N., R.7 E., Inyo County, CA, Hydrologic Unit 18090202, on right bank, 90 ft upstream from Old Spanish Trail Road, and 0.2 mi west of Tecopa.
DRAINAGE AREA - 3,090 mi². much of which is noncontributing.
REVISIONS HISTORY - REVISIONS HISTORY: Elevation of gage from beginning of record to 07/18/2016 was 1310 ft and was revised on 07/18/2016, based on Single-base OPUS-S level 3 survey.
PERIOD OF RECORD - Oct. 1961 to Aug. 1983, Oct. 1991 to Sep. 1995, 1998 miscellaneous discharge, Jan. 1999 to current year.
GAGE - Water-stage recorder and culvert control. Elevation of gage is 1,292.76 ft above North American Vertical Datum of 1988, from level 3 GPS survey. Prior to Oct. 16, 1991, at datum 16.52 ft higher.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 10,600 ft³/s, Aug. 19, 1983, determined from culvert computations and flow over road, gage height, 16.00 ft, datum then in use; no flow some days some years.