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Water-Year Summary for Site 06139500

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
  • For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
  • For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
  • For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
  • Not all sites have reports available for every water year.
Available Parameters
00060 Discharge(Mean)  

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

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USGS Water-Year Summary 2023
LOCATION - Lat 48°31'36.17", long 109°50'29.68" referenced to North American Datum of 1983, in SW 1/4 SW 1/4 SW 1/4 sec.18, T.32 N., R.15 E., Hill County, MT, Hydrologic Unit 10050005, on right bank, 6 mi upstream from mouth, 7.7 mi west southwest of Havre post office, and 22 mi downstream from Sage Creek.
DRAINAGE AREA - 1,787 mi².
REVISIONS HISTORY - Water Supply Paper 1729: Drainage area.
PERIOD OF RECORD - February 1946 to November 1953 (monthly discharge only for February 1946, published in Water Supply Paper 1309 as "Big Sandy Creek near Assinniboine"), annual maximums only for water years 1955-67 (published as "Big Sandy Creek near Assinniboine"), and May 1984 to current year (seasonal records only).
GAGE - Water-stage recorder and concrete control. Elevation of gage is 2,510 ft, referenced to the North American Vertical Datum of 1988.
REMARKS - Diversions for irrigation occur upstream from station.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of Mar. 30, 1978, reached a stage of 15.15 ft, from floodmarks, discharge, about 6,000 ft³/s.
EXTREMES FOR PERIOD OF RECORD - Maximum peak stage from floodmark.