USGS Water-Year Summary for Site 09144250

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

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Water year 2024: 2024-10-01 to 2025-09-30

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USGS Water-Year Summary 2024

09144250 GUNNISON RIVER AT DELTA, CO

LOCATION - Lat 38°45'11", long 108°04'40" referenced to North American Datum of 1927, in NW 1/4 NW 1/4 sec.13, T.15 S., R.96 W., Delta County, CO, Hydrologic Unit 14020005, in Confluence Park on left bank, 0.7 mi downstream from U.S. Highway 50 bridge at north edge of Delta.

DRAINAGE AREA - 5,636 mi².

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

SURFACE-WATER RECORDS

PERIOD OF RECORD - May 1976 to current year. Gage-height records collected at this site 1912-77 (flood seasons only) are in reports of the National Weather Service.

GAGE - Water-stage recorder with satellite telemetry and crest-stage gage. Elevation of gage is 4,910 ft above NGVD of 1929, from topographic map. Prior to May 1976 nonrecording gage at site 0.7 mi upstream at datum 4.52 ft higher. June 1, 1976 to Mar. 19, 1998, water-stage recorder at site 0.7 mi upstream at datum 4.52 ft higher.

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 good 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; no estimated daily discharges. Records good. 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. Natural flow of stream affected by transmountain and transbasin diversions, storage reservoirs, power developments, and many diversions for irrigation. Auxiliary gage established 200 ft downstream from present site to collect streamflow data during bridge construction at principal site then in use, June 27, 1991 to Sept. 30, 1992.

EXTREMES OUTSIDE PERIOD OF RECORD - Maximum gage height observed, 13.5 ft, June 6, 1957, from National Weather Service wire-weight gage at site 0.7 mi upstream, at datum 4.52 ft higher (discharge not determined).