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- 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.
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USGS Water-Year Summary 2024
11467553 North Fork Gualala River above South Fork Gualala River, near Gualala, CA
LOCATION - Lat 38°47'24", long 123°30'30" referenced to North American Datum of 1927, in SE 1/4 NW 1/4 sec.23, T.11 N., R.15 W., Mendocino County, CA, Hydrologic Unit 18010109, on right bank, 400 ft downstream of Little North Fork Gualala River, 1.1 mi upstream of South Fork Gualala River, and 1.9 mi northeast of Gualala.
DRAINAGE AREA - 47.1 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 2000 to September 2001, October 2002 to September 2003, and October 2004 to May 2006. October 2009 to current year (low-flow records only).
WATER TEMPERATURE: Water year 2001.
GAGE - Water stage recorder. Elevation of gage is 30 ft above NGVD of 1929, from topographic map.
REMARKS - No records computed above 400 ft³/s. No regulation above gage. Diversion upstream for municipal use for the town of Gualala.
