USGS Water-Year Summary 2018
11294500 North Fork Stanislaus River near Avery, CA
LOCATION - Lat 38°14'38", long 120°17'24" referenced to North American Datum of 1927, in SE 1/4 NW 1/4 sec.35, T.5 N., R.15 E., Calaveras County, CA, Hydrologic Unit 18040010, Stanislaus National Forest, on right bank, 1.1 mi upstream from McKays Point Dam, 3.3 mi upstream from Beaver Creek, and 5.1 mi northeast of Avery.
DRAINAGE AREA - 166 mi².
PERIOD OF RECORD - July 1914 to September 1925, October 1928 to current year. Water-year estimates for 1923-25 and 1929 published in WSP 1315-A.
WATER TEMPERATURE: Water years 1990-98.
REVISED RECORDS - WSP 1215: 1938 (instantaneous maximum discharge). WSP 1515: 1915 (instantaneous maximum discharge), 1932 (instantaneous maximum discharge), 1936 (instantaneous maximum discharge), 1938, 1940 (instantaneous maximum discharge).
GAGE - Water-stage recorder. Datum of gage is 3,388.30 ft above NGVD of 1929 (river-profile survey). Prior to September 1922, nonrecording gage at same site at datum 0.05 ft lower.
COOPERATION - Records were collected by Northern California Power Agency, under general supervision of the U.S. Geological Survey, in connection with Federal Energy Regulatory Commission project no. 2409.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 36,000 ft³/s, Jan. 31, 1963, gage height, 15.00 ft, from floodmarks, from rating curve extended above 14,000 ft³/s, on basis of slope-area measurement at gage height 13.8 ft; minimum daily, 5.5 ft³/s, Dec. 6, 7, 1929.