USGS Water-Year Summary 2017
10251300 Amargosa River at Tecopa, CA
LOCATION - Lat 35°50'55", long 116°13'45" referenced to North American Datum of 1927, in NW 1/4 SE 1/4 sec.09, T.20 N., R.7 E., Inyo County, CA, Hydrologic Unit 18090202, on right bank, 20 ft upstream from Old Spanish Trail Road, and 0.2 mi west of Tecopa.
DRAINAGE AREA - 3,090 mi², much of which is noncontributing.
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 1,310 ft above National Geodetic Vertical Datum of 1929, from topographic map. 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.