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Water-Year Summary for Site 11480400

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Available Parameters
00054 Reservoir storage(Obs.)  

Water year 2021: 2020-10-01 to 2021-09-30

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USGS Water-Year Summary 2021
11480400 Ruth Reservoir near Forest Glen, CA
LOCATION - Lat 40°22'08", long 123°25'56" referenced to North American Datum of 1927, in NW 1/4 NW 1/4 sec.19, T.1 S., R.7 E., Trinity County, CA, Hydrologic Unit 18010102, in Six Rivers National Forest, near center of Robert W. Matthews Dam on Mad River, and 5.6 mi west of Forest Glen.
DRAINAGE AREA - 121 mi².
PERIOD OF RECORD - October 1966 to current year. Records prior to October 1966 in files of Humboldt Bay Municipal Water District.
GAGE - Crest-stage gage. Datum of gage is NGVD of 1929 (levels by Humboldt Bay Municipal Water District).
COOPERATION - Since Apr. 1, 2004, records provided by Humboldt Bay Municipal Water District, under general supervision of the U.S. Geological Survey. Contents not rounded to U.S. Geological Survey standards.
REMARKS - Reservoir is formed by earth-fill dam; storage began July 1961. Total capacity, 48,000 acre-ft, elevation, 2,654.0 ft, crest of spillway. Minimum pool capacity, 7,810 acre-ft, elevation, 2,600 ft. Water is released down Mad River for municipal use. Records given represent total contents at 2400 hours. Contents based on Capacity Table dated 1977.
EXTREMES FOR PERIOD OF RECORD - Maximum contents, 68,000 acre-ft, Feb. 17, 1986, elevation, 2,667.06 ft; minimum, 11,700 acre-ft, Oct. 24-28, 1977; minimum elevation, 2,607.13 ft, Oct. 28, 1977.