Rain Gauges


The Flood Control District manages 30 rain gauges. We collect the data from our rain gauges and publish it online every 20 minutes. You can easily find the data via our Rain Map and other links on this page.

Rain Gauge Maps

RainMap(Interactive Gauge Map)
Rain Gauge Location Map

Google Earth Rain and Stream Gauges kmz

All gauges are up at this time.

Radio Path and Viewshed Map

Rain Gauge Table Web Page

Rain Gauge Table (with detailed recent Antecedent Conditions) 

Contra Costa Rain Gauge Data

Below is link to a HEC-DSS file that contains much of our rainfall data. Where we have real time data (time stamped at each tip of the tipping bucket rain gauge) we provide data at 5 minute intervals. Where we have only 1 hour or 1 day data, we provide data at 1 hour or 1 day intervals. You will need HEC-DSSVue to view the data after unzipping the file. Not all of our data is in this DSS file. We are continuing to add data to it.

Rainfall Data (NovaStar.zip) (DSS file 3.9 MB updated 6/18/2012 -right click to download file) Data is in inches, is provisional and subject to revision. The data is current as of June 30, 2011).

So that they would be flagged as missing, but would not skew the data plots in DSSVue, missing data has been set to equal -0.09999. Use the HEC-DSSVue Tools>Math Functions>General tab>Replace Specific Values pull down menu to change these. 

Rain Gauge List with links to CDEC

Below is a list of the rain gauge stations with a link to their data at the California Data Exchange Center (


West County Stations

Station 15 - Rodeo Fire Department

Station 21 - Richmond City Hall

Station 32 - EBRPD Bald Peak, Tilden Park

Central County Stations

Station 11 - CCC Flood Control District, Martinez

Station 12 - St. Mary's College, Moraga

Station 13 - Mt. Diablo Park Headquarters

Station 18 - Orinda Fire Station, Orinda

Station 29 - Rossmoor Community, Walnut Creek

Station 31 - Danville Library, Danville

Station 33 - Ygnacio Valley Fire, Concord

Station 34 - Rocky Ridge, San Ramon

Station 35 - Cummings Peak, Crockett

Station 36 - Pleasant Hill City Yard, Pleasant Hill

Station 37 - Arroyo Del Hambre Ferndale Road, Martinez

Station 20 - Dublin Fire Station, San Ramon

Station 22 - Mt. Diablo Peak

Station 43 - Concord Pavilion, Concord

Station 51 - Weapons Station Fire Station, Concord

East County Stations

Station 10 - Highland Peak, off Morgan Territory Road

Station 14 - EBMUD Pump Station, Bixler

Station 16 - Marsh Creek Fire Department, Clayton Stage Information

Station 19 - Los Medanos, Pittsburg

Station 25 - Marsh Creek Reservoir, Brentwood Stage Information

Station 38 - Kregor Peak, Clayton

Station 39 - Ironhouse Sanitary District, Oakley

Station 44 - Bethel Island Fire Station

Station 45 - Byron Airport

Station 47 - Roddy Ranch Golf Club, Brentwood

Station 53 - EBMUD Water Tank, Tassajara

Station 86 - CCC Corporation Yard, Brentwood


The Contra Costa County Flood Control & Water Conservation District (FC District) is not responsible for predicting flooding, warning property owners of eminent flooding, or ordering evacuations. The above information is presented to provide an indication of potential for flooding based on experience and review of limited historic rainfall data. The FC District does not warranty, guarantee, or certify the accuracy of the rainfall data. The data accuracy and availability can be compromised due to equipment failure, power loss, equipment defects, loss of calibration, or Internet/radio communication equipment failure of equipment provided by others.