USGS Water-Year Summary for Site 09365000

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	Available Parameters
	00010 Temperature, water(Min.,Mean,Max.)
	00060 Discharge(Mean)
	00095 Specific cond at 25C(Max.,Min.,Mean)
	00400 pH(Min.,Max.,Med.)
	63680 Turbidity, Form Neph(Mean,Min.,Max.)

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

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USGS Water-Year Summary 2023

09365000 SAN JUAN RIVER AT FARMINGTON, NM

LOCATION - Lat 36°43'22.86", long 108°13'32.12" referenced to North American Datum of 1983, San Juan County, NM, Hydrologic Unit 14080105, On left bank 360 ft. downstream from highway bridge on State Highway 371 in Farmington, 4,000 ft. downstream from Animas River, 2.3 mi upstream from La Plata River, and at mile 251.4.

DRAINAGE AREA - 7,240 mi². (approximately)

REVISIONS HISTORY - WSP 1119: drainage area. WSP 1243: 1938. WSP 1313: 1905, 1914. Gage heights for measurements 2419 to 2428 were revised on Feb. 22, 2019, based on changes to the gage datum. See also PERIOD OF RECORD.

SURFACE-WATER RECORDS

PERIOD OF RECORD - June 1904 to September 1906 (gage heights and discharge measurements only), September 1912 to current year. Monthly discharge only for some periods, published in WSP 1313. Discharge records for January to December 1905, published in WSP 175, are unreliable and should not be used.

GAGE - Water-stage recorder with satellite telemetry and crest-stage gage. Datum of gage is 5,230.37 ft above NGVD of 1929. See WSP 1313 or 1733 for history of changes prior to Nov. 19, 1933.

REMARKS - Water years 2014-2019; records fair except for estimated discharges, which are poor. Since June 1962 flow is partly controlled by operation of Navajo Reservoir (station 09355100) 50 mi upstream. Diversions upstream from station for irrigation of about 86,000 acres, 4,000 of which are irrigated by Farmers Mutual ditch, which diverts from Animas River and bypasses this station; ditch flow not included in record. At times this ditch may be supplied partly or entirely by diversion from San Juan River downstream from this station.

EXTREMES OUTSIDE PERIOD OF RECORD - Maximum flood occurred Oct. 6, 1911. Flood of Sept. 6, 1909, reached a stage of about 12.3 ft, site and datum in use May to September 1906.

WATER-QUALITY RECORDS

PERIOD OF RECORD - Water years 1962 to 1982, 1986, 1990 to 1991, 2000 to 2012, 2014 to current year.

PERIOD OF DAILY RECORD -
WATER TEMPERATURE: March 2014 to current year.
SPECIFIC CONDUCTANCE: March 2016 to current year.
pH: March 2016 to current year.
TURBIDITY: March 2016 to current year.

INSTRUMENTATION - Water-quality monitor since March 2014 (water temperature only prior to March 2016). Electronic data logger with 15-minute recording interval.