USGS Water-Year Summary 2017
11260000 San Joaquin River near El Nido, CA
LOCATION - Lat 37°06'41", long 120°35'22" referenced to North American Datum of 1927, in NE 1/4 NW 1/4 sec.31, T.9 S., R.13 E., Merced County, CA, Hydrologic Unit 18040001, on left bank, 0.16 mi upstream from W. Washington Road bridge, and 5.6 mi southwest of El Nido.
DRAINAGE AREA - 6,443 mi².
PERIOD OF RECORD - October 1939 to June 1949, October 2009 to September 2014 (discontinued).
GAGE - Datum of gage is 105 ft above NGVD of 1929, from topographical map. Prior to October 2009, 5.86 ft lower.
COOPERATION - Records provided by California Department of Water Resources, under the general supervision of the U.S. Geological Survey.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge (1944-49), 3,120 ft³/s, Feb. 9, 1945, gage height, 10.84 ft, present datum); no flow at times (result of irrigation operations).
Maximum discharge (October 1948 to June 1949), 84 ft³/s, Jan. 2, gage height, 2.75 ft; no flow during several months (result of irrigation operations).