Historic Data

Historic Rainfall Data

The user of the data is responsible for any errors resulting from data manipulation of this rainfall data. The user must be knowledgeable in using Excel as OC Public Works Staff are not available to provide software support for this data format. For general information on rainfall data please contact OC Watersheds at (714) 955-0600 or  CLICK HERE  to send an email  

Excel spreadsheets and location maps for historic rainfall stations can also be found here on an interactive Weather Data Map.

Station Number 

 Station Name

 Location Map

 Record Begins

Buena Park 

Map

1926

61

Tustin - Irvine Ranch 

Map

1897

88

 Newport Beach Harbor Master

Map

1921

96

 Fullerton Hillcrest Reservoir

Map

1933

100

 Laguna Beach

Map

1928

121

Santa Ana

Map

1933

163

Yorba Reservoir

Map

1955

165

Costa Mesa

Map

1955

169

Corona Del Mar

Map

1959

173

Villa Park Dam

Map

1961

176

El Toro

Not Available

1964

186

San Clemente (Palisades Reservoir)

Map

1965

206

Trabuco Forestry

Map

1971

208

Santiago Peak

Not Available

1998

216

Laguna Niguel (Sulphur Creek Dam)

Map

1974

219

Costa Mesa Water District

Map

1978

222

Orange Hardacre

Not Available

1980

229

Garden Grove (Fire Station)

Map

1985

Hydrologic Reports

Environmental Data Management Section publishes a Hydrologic Data Report containing data dating back as far as the late 1800s. New data is added each year from reporting (via radio telemetry) rain gages, recording non-reporting rain gages, and non-recording cooperative observer (maintained by volunteers) rain gages, and reporting water level stations.*

These hydrologic data, coupled with satellite and radar tracking of storms, are used for flood detection, allowing maintenance crews to be assigned to potential problem areas. The result is a better allocation of resources and enhanced public safety. The data are also used for a variety of other municipal purposes by the private sector.

If there are any questions regarding the details of a document, or to obtain a hard copy or other alternative formats of the original document, or to have a document read to you, please contact the OC Public Works offices, Monday through Friday, 7:00 am to 5:00 pm PST, at 2301 N. Glassell St., Orange, CA, 92865 by email at OC Watersheds, or by phone at (714) 955-0600.

    *As of 2005, hydrologic data is available upon request as raw datasets.


Disclaimer

Although the data provided using the County of Orange, OC Public Works systems has been produced and processed from sources believed to be reliable, no warranty expressed or implied is made regarding accuracy, adequacy, completeness, legality, reliability or usefulness of any information. The County of Orange, OC Public Works provides this information on an "as is" basis. All warranties of any kind express or implied, including but not limited the implied warranties of merchantability, fitness for a particular purpose are disclaimed.