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Water-Year Summary for Site 06120500

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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 2021: 2021-10-01 to 2022-09-30

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USGS Water-Year Summary 2021
LOCATION - Lat 46°25'43.68", long 109°50'28.30" referenced to North American Datum of 1983, in SW 1/4 NW 1/4 NW 1/4 sec.27, T.8 N., R.15 E., Wheatland County, MT, Hydrologic Unit 10040201, on right bank, downstream of bridge on U.S. Highway 191, 1.0 mi southwest of Harlowton, 9.6 mi upstream from American Fork, and at river mile 327.8.
DRAINAGE AREA - 1,108 mi².
REVISIONS HISTORY - Water Supply Paper (WSP) 1309: 1912, 1915 (maximum discharge), 1918, 1925. WSP 1729: Drainage area.
PERIOD OF RECORD - July 1907 to November 1929; March 1930 to December 1932; April to August 1933; February 1934 to current year, seasonal record for water year 2007. Monthly discharge only for some periods, published in Water Supply Paper (WSP) 1309.
GAGE - Water-stage recorder. Elevation of gage is 4,171.46 ft, referenced to the National Geodetic Vertical Datum of 1929 (levels by Morrison and Maierle, Inc.). Prior to Dec. 8, 1937, nonrecording gages at site 1.2 mi downstream at different elevations. Dec. 8, 1937 to Aug. 26, 1955, nonrecording gage at previous bridge 50 ft downstream at elevation 2.0 ft higher. Aug. 27, 1955 to Apr. 9, 2003, water-stage recorder 350 ft downstream at same elevation.
10-01-2019 to 09-30-2020- records are good, except estimated records which are poor.
10-01-2018 to 09-30-2019- records are good, except estimated records which are poor.
10-01-2017 to 09-30-2018: records are fair, except estimated records which are poor.
10-01-2016 to 09-30-2017: records are good, except estimated records which are poor.
10-01-2015 to 09-30-2016: records are good, except April 26 to June 30, which are fair, 
                          and estimated records, which are poor. 
10-01-2014 to 09-30-2015: records are good, except estimated records which are poor. 
10-01-2013 to 09-30-2014: records are good, except estimated records which are poor. 
Some regulation occurs by Bair and Martinsdale Reservoirs. Diversions for irrigation of about 21,900 acres occur upstream from station.