USGS Water-Year Summary for Site 05056678

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	Available Parameters
	00010 Temperature, water(Max.,Min.,Mean)
	00060 Discharge(Mean)
	00065 Gage height(Mean) [Bubbler]
	00095 Specific cond at 25C(Max.,Min.,Mean)

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

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USGS Water-Year Summary 2024

05056678 TOLNA COULEE NEAR TOLNA, ND

LOCATION - Lat 47°51'39", long 98°29'40" referenced to North American Datum of 1983, in SE 1/4 SW 1/4 sec.29, T.151 N., R.61 W., Nelson County, ND, Hydrologic Unit 09020203, at downstream side of bridge on county road, about 3.2 mi northwest of Tolna.

DRAINAGE AREA - Not determined.

SURFACE-WATER RECORDS

PERIOD OF RECORD - June 2012 to current year (seasonal records only).

GAGE - Acoustic doppler velocity meter and water stage recorder. Datum of gage is 1,424.15 ft above North American Vertical Datum 1988 (NAVD88, survey done by USGS) and 1,422.97 ft above National Geodetic Vertical Datum (NGVD29).

REMARKS -

Flow regulated by East End Devils Lake Outlet structure operated by the North Dakota State Water Commission since June 2012.

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 fair except for the 2020, 2022, and 2023 water years, when records were rated good. Discharges below 10 cfs and estimated discharges are poor, unless otherwise noted.

EXTREMES FOR PERIOD OF RECORD - Maximum daily peak flow, 394 ft³/s, August 31, 2014; peak stage, 17.14 ft; maximum peak stage recorded, 18.62 ft, July 6, 2012.

WATER-QUALITY RECORDS

PERIOD OF DAILY RECORD - WATER TEMPERATURE: June 2012 to current year (seasonal records only).

SPECIFIC CONDUCTANCE: June 2012 to current year (seasonal records only).

REMARKS -

Water quality monitor removed for winter months.

Available periods of continuous water quality daily records are internally rated qualitatively as excellent, good, fair, or poor. For questions about periods of record and/or quality ratings, please send an email to gs-w-nd_nwisweb_data_inquiries@usgs.gov.