USGS Water-Year Summary for Site 06759500

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	Available Parameters
	00060 Discharge(Mean)

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

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USGS Water-Year Summary 2023

06759500 SOUTH PLATTE RIVER AT FORT MORGAN, CO

LOCATION - Lat 40°16'06.25", long 103°48'04.29" referenced to North American Datum of 1983, in SW 1/4 NE 1/4 sec.31, T.4 N., R.57 W., Morgan County, CO, Hydrologic Unit 10190012, on downstream side of Rainbow Arch Bridge, 70 ft downstream from bridge on State Highway 52, 0.3 mi north of Interstate Highway 76, and 0.7 mi north of Fort Morgan.

DRAINAGE AREA - 14,648 mi².

REVISIONS HISTORY - WDR-US-2010: Drainage area.

SURFACE-WATER RECORDS

PERIOD OF RECORD - October 1943 to September 1958, December 2001 to current year.

GAGE - Water-stage recorder with satellite telemetry and crest-stage gage. Elevation of gage is 4,260 ft above NGVD of 1929, from topographic map. Oct. 1, 1943 to Sept. 30, 1958, at same site, but different datum. Dec. 7, 2001 to Sept. 14, 2013, at site 350 ft downstream, at same datum.

REMARKS - Water year 2014; records fair except for estimated daily discharges, which are poor. Water year 2015; records fair except for estimated daily discharges, which are poor. Water year 2016; records fair 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 fair except for estimated daily discharges, which are poor. Water year 2019; records fair except for estimated daily discharges, which are poor. Water year 2020; no estimated daily discharges. Records fair. Water year 2021; records fair except for estimated daily discharges, which are poor. Water year 2022; records fair 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, ground-water withdrawals, and return flow from irrigated areas.

EXTREMES OUTSIDE PERIOD OF RECORD - Maximum flood known, 84,300 ft³/s, May 31, 1935, by slope-area determination of peak flow 1 mi upstream; flood came principally from Bijou Creek.

EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 60,000 ft³/s, Sept. 15, 2013, from rating curve extended above 39,000 ft³/s, gage height, 25.73 ft, from flood marks.