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Water-Year Summary for Site USGS 11460750

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  • Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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Available Parameters
00060 Discharge(Mean)  

Water year 2020: 2019-10-01 to 2020-09-30
 

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USGS Water-Year Summary 2020
11460750 Walker Creek near Marshall, CA
LOCATION - Lat 38°10'33", long 122°49'02" referenced to North American Datum of 1927, Marin County, CA, Hydrologic Unit 18050005, in Soulajule (Vasquez) Grant, on right bank, 0.8 mi downstream from Verde Canyon, 2.8 mi below confluence of Arroyo Sausal and Salmon Creek, and 4.0 mi east of Marshall.
DRAINAGE AREA - 31.1 mi².
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1983 to current year. WATER TEMPERATURE: Water years 2004-06. SEDIMENT DATA: Water years 2004-06.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 148.96 ft above NAVD of 1988. 
REMARKS - Flow affected by regulation and diversions and by Soulajule Reservoir on Arroyo Sausal; reservoir capacity, 10,570 acre-ft.
EXTREMES OUTSIDE PERIOD OF RECORD - Flood of Jan. 4, 1982, reached a stage of 15.9 ft, present datum, from floodmarks, discharge, 14,600 ft³/s.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 10,500 ft³/s, Feb. 2, 1998, gage height, 14.21 ft, from rating curve extended above 1,100 ft³/s, on basis of comparison with discontinued downstream station "Walker Creek near Tomales", maximum gage height, 15.77 ft, Dec. 31, 2005; minimum daily, 0.73 ft³/s, Nov. 26, 1991.