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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.
USGS Water-Year Summary 2024
09371010 SAN JUAN RIVER AT FOUR CORNERS, CO
LOCATION - Lat 37°00'04.1", long 109°01'46.5" referenced to North American Datum of 1983, Montezuma County, CO, Hydrologic Unit 14080201, on right bank 0.1 mi north of New Mexico-Colorado State line, 2,800 ft upstream from bridge on U.S. Highway 160, 1.0 mi east of Four Corners Monument, 3.0 mi downstream from Mancos River, and at mile 187.2.
DRAINAGE AREA - 14,600 mi². (approximately)
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1977 to current year.
GAGE - Water-stage recorder with satellite telemetry and crest-stage gage. Elevation of gage is 4,600 ft above NGVD of 1929, from topographic map. Prior to August 2003, gage was located on left bank (about 1,300 ft upstream of U.S. Highway 160 bridge). In August 2003, gage was moved to right bank. In March 2009, gage was moved about 1,500 ft upstream to its current location.
REMARKS - Water years 2014-2019; records fair except for estimated discharges, which are poor. Flow partly regulated by Navajo Reservoir (09355100).
WATER-QUALITY RECORDS
PERIOD OF RECORD - Water years 1978 to 1981, 1985 to current year.
PERIOD OF DAILY RECORD -
WATER TEMPERATURE: March 2014 to current year.
SPECIFIC CONDUCTANCE: May 2016 to current year.
pH: May 2016 to current year.
TURBIDITY: May 2016 to current year.
WATER TEMPERATURE: March 2014 to current year.
SPECIFIC CONDUCTANCE: May 2016 to current year.
pH: May 2016 to current year.
TURBIDITY: May 2016 to current year.
INSTRUMENTATION - Water-quality monitor since March 2014 (water temperature only prior to May 2016). Electronic data logger with 15-minute recording interval.
