USGS 11162570 SAN GREGORIO C A SAN GREGORIO CA

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Available data for this site

DESCRIPTION:: 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: 13.50 feet above NAVD88.

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Current / Historical Observations (availability statement)	1987-10-01	2025-11-23
Daily Data
Discharge, cubic feet per second	1969-10-01	2025-11-22	17465
Daily Statistics
Discharge, cubic feet per second	1969-10-01	2025-05-20	17279
Monthly Statistics
Discharge, cubic feet per second	1969-10	2025-05
Annual Statistics
Discharge, cubic feet per second	1970	2025
Peak streamflow	1955-12-22	2024-01-22	49
Field measurements	1969-10-27	2025-11-18	600
Field/Lab water-quality samples (Legacy QW is frozen as of March 2024, newer data may be found on MLP)	1967-05-10	1993-04-28	142
Water-Year Summary	2005	2024	19
Revisions	Loading...

OPERATION:: Record for this site is maintained by the USGS California Water Science Center; Email questions about this site to California Water Science Center Water-Data Inquiries

U.S. Department of the Interior | U.S. Geological Survey
Title: NWIS Site Information for USA: Site Inventory
URL: https://waterdata.usgs.gov/nwis/inventory?

Page Contact Information: California Water Data Support Team
Page Last Modified: 2025-11-23 18:09:13 EST
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