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- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
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USGS Water-Year Summary 2024
11182500 San Ramon Creek at San Ramon, CA
LOCATION - Lat 37°46'23", long 121°59'37" referenced to North American Datum of 1927, in sec.08, T.2 S., R.1 W., Contra Costa County, CA, Hydrologic Unit 18050001,
on right bank, 0.2 mi downstream from Bollinger Creek, and 1.0 mi southwest of San Ramon.
DRAINAGE AREA - 5.89 mi².
REVISIONS HISTORY - WSP 1445: 1953-54 (peaks above base).
SURFACE-WATER RECORDS
PERIOD OF RECORD - October 1952 to current year.
GAGE - Water-stage recorder and concrete control. Datum of gage 549.17 ft above NAVD of 1988.
REMARKS - No regulation or diversion upstream from station.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 1,600 ft³/s, Oct. 13, 1962, gage height, 16.98 ft, from rating curve extended above 200 ft³/s, on basis of culvert computation; no flow for parts of most years.
