USGS 11313315 OLD RIVER NEAR BYRON CA

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Available data for this site

DESCRIPTION:: Latitude 37°53'28", Longitude 121°34'09" NAD27; Contra Costa County, California, Hydrologic Unit 18040003; Datum of gage: 0 feet above NAVD88.

AVAILABLE DATA:

Data Type	Begin Date	End Date	Count
Current / Historical Observations (availability statement)	1999-06-27	2026-01-04
Daily Data
Discharge, tidally filtered, cubic feet per second	1999-06-25	2025-12-29	9347
Daily Statistics
Discharge, tidally filtered, cubic feet per second	1999-06-25	2025-01-25	9016
Monthly Statistics
Discharge, tidally filtered, cubic feet per second	1999-06	2025-01
Annual Statistics
Discharge, tidally filtered, cubic feet per second	1999	2025
Field measurements	2001-07-17	2025-08-05	1212
Field/Lab water-quality samples (Legacy QW is frozen as of March 2024, newer data may be found on MLP)	2010-03-15	2023-07-06	76
Water-Year Summary	2014	2024	11
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: 2026-01-04 23:54:42 EST
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