Current and historical streamflow data for the San Gregorio Creek are available from the U.S. Geological Survey’s (“USGS”) National Water Information System. The San Gregorio Creek streamgage is managed and maintained by the USGS and operated in cooperation with the San Mateo County Resource Conservation District.
USGS 11162570 SAN GREGORIO C A SAN GREGORIO CA
Latitude 37°19’33”, Longitude 122°23’08” NAD27
San Mateo County, California, Hydrologic Unit 18050006
Drainage area: 50.9 square miles
Datum of gage: 11.40 feet above NGVD29.