USGS Water-Year Summary for Site 05099600

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	Available Parameters
	00060 Discharge(Mean)
	00065 Gage height(Mean)

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

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USGS Water-Year Summary 2023

05099600 PEMBINA RIVER AT WALHALLA, ND

LOCATION - Lat 48°54'48", long 97°55'00" referenced to North American Datum of 1927, in SE 1/4 NW 1/4 sec.29, T.163 N., R.56 W., Pembina County, ND, Hydrologic Unit 09020316, on southeast corner of State Highway 32 bridge, 0.5 mi south of Walhalla, and 7 mi downstream from Little South Pembina River.

DRAINAGE AREA - 3,350 mi². approximately.

REVISIONS HISTORY -

WSP 1388: 1943, 1950(P). WSP 1558: 1957. WSP 1728: Drainage area.

Estimated Discharges for Nov 6, 2019-Jan 5, 2020 were revised on July 10, 2020, based on international review.

SURFACE-WATER RECORDS

PERIOD OF RECORD - DAILY DISCHARGE--October 1939 to September 1990, October 1993 to September 1995, April 2000 to current year. Water years 1993 and 1997-98, miscellaneous discharge measurements only. Prior to October 1963, published as "near Walhalla".

PERIOD OF RECORD.--DAILY GAGE HEIGHT--October 2000 to current year.

GAGE -

Datum of the gage is 934.34 feet above North American Vertical Datum of 1988 (NAVD88) and 93.334 feet above National Geodetic Vertical Datum of 1929 (NGVD29)

For a detailed gage datum history, please use the blue 'questions or comments' tab on the bottom of the site's monitoring location page.

REMARKS -

Accuracy of records for water years prior to 2014 are noted in the individual Annual Data Reports for those water years. For water years 2014 onward, records good except for estimated discharges, which are poor, unless otherwise noted.

EXTREMES OUTSIDE PERIOD OF RECORD - A peak flow of 23,100 ft³/s, peak stage, 16.53 ft (from floodmark) occurred on April 25 or 26, 1997. A measured flow of 22,500 ft³/s, stage, 16.20 ft, occurred on April 26, 1997.

EXTREMES FOR PERIOD OF RECORD - Maximum peak flow, 20,600 ft³/s, May 21, 2013, peak stage, 17.25 ft; Maximum peak stage, 19.2 ft, April 18, 1950 at site 5.5 mi upstream, about 16.2 ft, at present location and datum.

WATER-QUALITY RECORDS

PERIOD OF RECORD - Water years 1962-90, 1992-95, 2000-12.