USGS Water-Year Summary 2023
11368000 McCloud River above Shasta Lake, CA
LOCATION - Lat 40°57'30", long 122°13'07" referenced to North American Datum of 1927, Shasta County, CA, Hydrologic Unit 18020004, unsurveyed, on right bank, just upstream from Shasta Lake, 0.2 mi downstream from Big Bollibokka Creek, and 11.3 mi east of Lamoine.
DRAINAGE AREA - 604 mi².
REVISIONS HISTORY - WSP 1445: 1953 (instantaneous maximum discharge). WSP 1931: Drainage area. WDR CA-94-4: 1993 (peaks above base).
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1945 to current year. Prior to 1950, published as "above Shasta Reservoir."
CHEMICAL DATA: 1951, 1953-59.
WATER TEMPERATURE: Water years 1951, 1954-59.
GAGE - Water-stage recorder. Datum of gage is 1,100.00 ft above NGVD of 1929 (levels by U.S. Bureau of Reclamation).
COOPERATION - Records were collected by Pacific Gas and Electric Co., under general supervision of the U.S. Geological Survey, in connection with Federal Energy Regulatory Commission project no. 2106.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 51,300 ft³/s, Jan. 1, 1997, gage height, 29.00 ft, from rating curve extended above 15,000 ft³/s on basis of slope-area measurement of peak flow; minimum daily, 109 ft³/s, Dec. 16-20, 1971. Minimum prior to regulation by Lake McCloud, 825 ft³/s, Jan. 3, 1950.