Rainfall and Stream Gage Summaries

The Rain Report provides data on the latest storm event including storm rainfall and seasonal accumulations for the Santa Ana, Villa Park Dam, Santiago Peak, and Costa Mesa stations in Orange County.


The Daily Accumulations provide daily rainfall totals at four stations throughout Orange County.

 Current Year

 Previous Year

Costa Mesa

Costa Mesa

Santa Ana

Santa Ana

Santiago Peak

Santiago Peak

Villa Park Dam

Villa Park Dam


The Stream Gage Report provides data every three hours showing Date, Time, Water Level and Discharge in cubic feet per second (cfs).


Warranties: Accuracy of Information - Use of Information

Although the data found using the County of Orange, OC Public Works Department access systems have 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. This disclaimer applies to both isolated and aggregate uses of the information.

The County of Orange, OC Public Works Department provide 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, freedom from contamination by computer viruses and non-infringement of proprietary rights ARE DISCLAIMED.

Changes may be periodically added to the information herein; these changes may or may not be incorporated in any new version of the publication. If you have obtained information from County of Orange, OC Public Works Department or from a source other than County of Orange, OC Public Works Department, be aware that electronic data can be altered subsequent to original distribution. Data can also quickly become out-of-date. It is recommended that careful attention be paid to the contents of any metadata associated with a file, and that the originator of the data or information be contacted with any questions regarding appropriate use. If you find any errors or omissions, we encourage you to report them to the County of Orange, OC Public Works Department webmaster.