USGS Water-Year Summary for Site 09368000

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

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

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USGS Water-Year Summary 2023

09368000 SAN JUAN RIVER AT SHIPROCK, NM

LOCATION - Lat 36°46'36", long 108°40'59" referenced to North American Datum of 1983, San Juan County, NM, Hydrologic Unit 14080105, on left bank 0.7 mi upstream from bridge on U.S. Highway 64 in Shiprock.

DRAINAGE AREA - 12,900 mi². (approximately)

REVISIONS HISTORY - WSP 1243: 1931, 1934-38, 1951. WSP 1313: 1911, 1933. WDR NM-78-1: 1977. Gage heights for measurements 3952 to 3957 were revised on June 27, 2019, based on changes to the gage datum.

SURFACE-WATER RECORDS

PERIOD OF RECORD - January to October 1911, February 1927 to current year. Monthly or yearly discharge only for some periods, published in WSP 1313.

GAGE - Water-stage recorder with satellite telemetry and crest-stage gage. Datum of gage is 4,890 ft above NGVD of 1929, from river-profile survey. Prior to Apr. 6, 1922, nonrecording gage, and Apr. 7, 1922, to Oct. 25, 1933, water-stage recorder at site 3 mi upstream at different datum. Oct. 26, 1933, to Sept. 30, 1936, water-stage recorder at datum 3.31 ft higher and Oct. 1, 1936, to Sept. 30, 1952, at datum 1.77 ft higher. Supplementary water-stage recorders at nearby sites, same datum, used at times. Water-stage recorder at site 4 mi upstream Sept. 1994.

REMARKS - Water years 2014-2015; records good except for discharges above 1,500 ft³/s, which are fair, and estimated discharges, which are poor. Water year 2016; records good except for discharges above 1,500 ft³/s that occurred prior to April 9, 2016, which are fair, and estimated discharges, which are poor. Water years 2017-2018; records good except for estimated discharges, which are poor. Water year 2019; records fair except for estimated discharges, which are poor. Since 1962 flow partly regulated by Navajo Reservoir (station 09355100). Diversions for irrigation of about 118,000 acres upstream from station. Ungaged canals bypass station on both right and left banks, though some of bypass flow is returned to river downstream from gage.

EXTREMES OUTSIDE PERIOD OF RECORD - Maximum flood occurred Oct. 6, 1911, and reached a stage of 22 ft, site and datum then in use.

WATER-QUALITY RECORDS

PERIOD OF RECORD - Water years 1941 to 1945, 1951 to current year.

PERIOD OF DAILY RECORD -
WATER TEMPERATURE: March 2016 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 2016. Electronic data logger with 15-minute recording interval.