USGS Water-Year Summary for Site 09152500

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	Available Parameters
	00010 Temperature, water(Max.,Min.)
	00045 Precipitation(Sum)
	00060 Discharge(Mean)
	00095 Specific cond at 25C(Mean)
	00300 Dissolved oxygen(Max.,Mean,Min.)
	00400 pH(Min.,Max.,Med.)
	63680 Turbidity, Form Neph(Min.,Med.,Max.)

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Water year 2023: 2022-10-01 to 2023-09-30

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USGS Water-Year Summary 2023

09152500 GUNNISON RIVER NEAR GRAND JUNCTION, CO

LOCATION - Lat 38°59'00", long 108°27'00" referenced to North American Datum of 1927, in NE 1/4 SW 1/4 sec.14, T.2 S., R.1 E., Mesa County, CO, Hydrologic Unit 14020005, on right bank 180 ft upstream from bridge on State Highway 141, 0.4 mi downstream from Whitewater Creek, 0.5 mi south of Whitewater, and 8 mi southeast of Grand Junction.

DRAINAGE AREA - 7,923 mi².

REVISIONS HISTORY - WDR-US-2011: Drainage area.

SURFACE-WATER RECORDS

PERIOD OF RECORD - October 1894 to December 1895 (gage heights only), October 1896 to September 1899, October 1901 to October 1906 (published as "at Whitewater"), October 1916 to current year. Monthly discharge only for some periods, published in WSP 1313.

GAGE - Water-stage recorder with satellite telemetry and crest-stage gages. Datum of gage is 4,628.12 ft above NGVD of 1929. See WSP 1733 or 1924 for history of changes prior to October 1959.

REMARKS - Water year 2014; records good except for estimated daily discharges, which are poor. Water year 2015; records good except for estimated daily discharges, which are poor. Water year 2016; records good except for estimated daily discharges, which are poor. Water year 2017; records fair except for estimated daily discharges, which are poor. Water year 2018; records good except for estimated daily discharges, which are poor. Water year 2019; records good except for estimated daily discharges, which are poor. Water year 2020; records good except for estimated daily discharges, which are poor. Water year 2021; records good except for estimated daily discharges, which are poor. Water year 2022; records good except for estimated daily discharges, which are poor. Water year 2023; records good except for estimated daily discharges, which are poor. Records show flow that enters Colorado River from Gunnison River Basin except for about 60 ft³/s diverted downstream from gage during irrigation season. Natural flow of river affected by diversions for irrigation of about 233,000 acres upstream from station, storage reservoirs, and return flow from irrigated lands.

EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 35,700 ft³/s, May 23, 1920, from rating curve extended above 22,000 ft³/s, gage height, 14.95 ft, site and datum then in use.

CLIMATOLOGICAL RECORDS

PERIOD OF RECORD - April 2019 to current year (seasonal records only).

INSTRUMENTATION - Tipping-bucket rain gage with satellite telemetry. Datum of gage is 4,628.12 ft above NGVD of 1929.

EXTREMES FOR PERIOD OF RECORD - (seasonal only) Maximum daily precipitation, 0.71 inches, Apr. 14, 2023.

REMARKS - Gage operated seasonally, April through September.