Click
to
hide
Water-Year
Summary
instructions
and
information
- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
- For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
- For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
- Not all sites have reports available for every water year.
USGS Water-Year Summary 2024
11480390 Mad River above Ruth Reservoir, near Forest Glen, CA
LOCATION - Lat 40°17'04", long 123°20'03" referenced to North American Datum of 1927, in NW 1/4 NE 1/4 sec.24, T.2 S., R.7 E., Trinity County, CA, Hydrologic Unit 18010102, in Six Rivers National Forest, on left bank, downstream side of Zenia Road Bridge, 500 ft downstream from unnamed creek, 0.4 mi downstream from Tompkins Creek, and 6.1 mi southwest of Forest Glen.
DRAINAGE AREA - 93.8 mi².
REVISIONS HISTORY - WDR CA-80-2: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - June 1980 to current year. Discharge measurements only September to December 1971, July 1972, June to September 1977.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 2,668.71 ft above NAVD of 1988. June 28 to Sept. 30, 1990, nonrecording gage 400 ft upstream at different datum.
REMARKS - No regulation or diversion upstream from station.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 15,000 ft³/s, Feb. 17, 1986, gage height, 11.39 ft in gage, 12.94 ft from crest-stage gage, from rating curve extended above 5,000 ft³/s, maximum gage height, 14.12 ft, Dec. 30, 2005; no flow at times each year.
