USGS Water-Year Summary 2020
10333000 Humboldt River Near Imlay, NV
LOCATION - Lat 40°41'33", long 118°12'12" referenced to North American Datum of 1927, in NW 1/4 SE 1/4 sec.25, T.33 N., R.33 E., Pershing County, NV, Hydrologic Unit 16040108, on right bank, 1 mi upstream from Callahan bridge, 4 mi northwest of Imlay, and at mi 75.00 above Derby Road bridge.
DRAINAGE AREA - 15,503.93 mi².
- WSP 1714: Drainage area; WDR NV-99-1: Drainage area. Elevation of gage from beginning of record to 10/17/2017 was 4130 ft and was revised on 10/17/2017, based on single-base OPUS-S level 3 survey.
PERIOD OF RECORD - Jun. 1935 to Dec. 1941, Apr. 1945 to current year.
GAGE - Water-stage recorder. Elevation of gage is 4133.2 ft above NAVD88 from Global Navigation Satellite System survey quality level 3. Prior to Apr. 28, 1945, at site 1 mi downstream at different datum. Apr. 28, 1945, to Aug. 20, 1947, at present site at datum 1 ft higher.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 9,270 ft³/s, May 27, 1984, gage height, 13.20 ft; no flow at times, some years.