USGS Water-Year Summary 2023
11162618 Pilarcitos Lake near Hillsborough, CA
LOCATION - Lat 37°32'56", long 122°25'16" referenced to North American Datum of 1927, in SE 1/4 SE 1/4 sec.28, T.4 S., R.5 W., San Mateo County, CA, Hydrologic Unit 18050006, on dam, west side of spillway, and 2.0 mi southwest of Hillsborough.
DRAINAGE AREA - 3.91 mi².
- WDR US-2009; 1999-2008.
PERIOD OF RECORD - October 1999 to current year.
GAGE - Water-stage recorder. Datum of gage is NGVD of 1929 and 2.66 ft above NAVD of 1988.