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Water-Year Summary for Site 09180500

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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Available Parameters
00010 Temperature, water(Mean)  
00060 Discharge(Mean)  
00095 Specific cond at 25C(Mean)  

Water year 2017: 2016-10-01 to 2017-09-30

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USGS Water-Year Summary 2017
LOCATION - Lat 38°48'38", long 109°17'34" referenced to North American Datum of 1927, in NW 1/4 NW 1/4 sec.17, T.23 S., R.24 E., Grand County, UT, Hydrologic Unit 14030005, on the left bank one mile downstream from Dolores River, 11 mi. south of Cisco, UT, 36 mi. downstream from Colorado-Utah state line, 97 mi. upstream from Green River, 235 mi. upstream from San Juan River, and at mile 1,022 from Arizona-Sonora border.
DRAINAGE AREA - 24,100 mi², approximately.
PERIOD OF RECORD - January 1895 to current year (1895 to 1910, calendar-year estimates only). Monthly discharge only for some periods, published in WSP 1313. Published as Grand River near Moab, October 1913 to November 1914, and as Grand River near Cisco, November 1914 to September 1917.
REVISED RECORDS - WSP 918: 1913, 1937. WSP 1313: 1918-22.
GAGE - Water-stage recorder and crest-stage gage. Elevation of gage is 4,090 ft above NGVD of 1929, from river-profile map. Prior to November 10, 1914, several staff and chain gages at bridge near Moab, 31 mi downstream at datum 3,937.73 ft above NGVD of 1929.
REMARKS - Records good except for estimated daily discharges, which are fair. Diversions above station for irrigation and power, including several transmountain diversions. Flow regulated by Blue Mesa Reservoir since November 27, 1965.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood on Jul 4, 1884 reached a discharge of about 125,000 ft³/s, from flood record at Fruita, Colorado.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 76,800 ft³/s, Jun 19, 1917, gage height, 19.7 ft; minimum recorded, 558 ft³/s, Jul 21, 1934, gage height, 0.44 ft.
PERIOD OF RECORD - August 1928 to current year.
PERIOD OF DAILY RECORD - WATER TEMPERATURE: May 1949 to September 1959, October 1964 to September 1981, March 1982 to current year. SPECIFIC CONDUCTANCE: October 1941 to September 1952, October 1954 to September 1981, March 1982 to current year. SUSPENDED-SEDIMENT DISCHARGE: May 1930 to September 1984.
REMARKS - Unpublished daily records of specific conductance obtained before water year 1965 were included in the determination of extremes for period of daily record and are available in files of USGS Utah Water Science Center office, Salt Lake City, Utah. Quality of data for specific periods can be obtained by contacting the Utah Water Science Center.
EXTREMES FOR PERIOD OF RECORD - WATER TEMPERATURE: Maximum observed, 29.0°C, Jul 29, 1966; minimum, -0.2°C, on many days during winter period most years. SPECIFIC CONDUCTANCE: Maximum daily, 4,820 microsiemens/cm, Dec 13, 1957; minimum daily, 291 microsiemens/cm, May 31, 1953. SEDIMENT CONCENTRATIONS: Maximum daily mean, 69,000 mg/L, Oct 27, 1951; minimum daily mean, 4 mg/L, Aug 22, 1960. SEDIMENT LOADS: Maximum daily, 2,790,000 tons, Oct 14, 1941; minimum daily, 14 tons, Aug 22, 1960.