USGS Water-Year Summary for Site 06657000

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	Available Parameters
	00060 Discharge(Mean)

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Water year 2024: 2023-10-01 to 2024-09-30

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USGS Water-Year Summary 2024

06657000 NORTH PLATTE RIVER BELOW WHALEN DIVERSION DAM, WY

LOCATION - Lat 42°14'27.8", long 104°37'38.8" referenced to North American Datum of 1927, in NW 1/4 NE 1/4 SW 1/4 sec.11, T.26 N., R.65 W., Goshen County, WY, Hydrologic Unit 10180009, on left bank 0.7 mi downstream from Whalen Diversion Dam, and 6.0 mi northwest of Fort Laramie.

DRAINAGE AREA - 16,318 mi² of which 544 mi² probably is noncontributing.

REVISIONS HISTORY -

WSP 1310: 1924. WDR WY-76-1: Drainage area.

The datum was revised on March 20, 2025 because the original NGVD29 datum was found to be in error by the Level II GNSS survey that was performed by USGS personnel on July 2, 2024.

SURFACE-WATER RECORDS

PERIOD OF RECORD - May 1909 to current year. Monthly discharge only, prior to January 1915, published in WSP 1910. Prior to April 16, 1938, published as "below Whalen", and April 16, 1938, to September 30, 1974, as "at recorder station, below Whalen".

GAGE - Water-stage recorder. Datum of gage is 4,259.67 ft above NAVD of 1988, from GNSS survey. Prior to March 20, 2025, the elevation of gage was reported as 4,280ft above NGVD of 1929, from topographic map. Sheet piling weir since April 25, 1994. Prior to April 16, 1938, nonrecording gages at Whalen Diversion Dam and canals 0.7 mi upstream from station at different datums. April 16, 1938, to November 17, 1955, water-stage recorder at site 1.9 mi downstream from station, and November 18, 1955, to April 25, 1994, at site 1.8 mi downstream from station at different datum. Bureau of Reclamation data collection platform with satellite telemetry at station.

COOPERATION -

10-04-2018 to 12-17-2019: Seven discharge measurements provided by the Wyoming State Engineer's Office 
and one discharge measurements provided by the Bureau of Reclamation.

11-03-2017 to 10-03-2018: Thirteen discharge measurements provided by the Wyoming State Engineer's Office 
and seven discharge measurements provided by the Bureau of Reclamation.

10-01-2016 to 11-02-2017: Thirteen discharge measurements provided by the Wyoming State Engineer's Office 
and ten discharge measurements provided by the Bureau of Reclamation.

10-01-2015 to 09-30-2016: Thirteen discharge measurements provided by the Wyoming State Engineer's Office 
and eight discharge measurements provided by the Bureau of Reclamation.

REMARKS - Flow regulated by Whalen Diversion Dam 0.7 mi upstream from station. Natural flow of stream affected by storage reservoirs, transbasin diversions, power development, ground-water withdrawals and diversions for irrigation, and return flow from irrigated areas.

EXTREMES FOR PERIOD OF RECORD - Maximum peak flow on basis of peak flow measurement of upstream flood.