VCPWA-Watershed Protection Hydrologic Data Server

Welcome to Ventura County Watershed Protection District Hydrologic Data Webpage. This page provides rain, stream, and evaporation data from the District's official gages in Ventura County, as well as other available data used in District planning studies.

Due to the complexity of the website and datasets, we STRONGLY urge you to read our file explaining how to download data from this website and any associated caveats by clicking on: Hydrodata Web Questions. Please read the file before you contact us with any questions regarding this site or our data sets.

For certified data or non-standard data not available on this website, please send a data request to the Hydrology Section as outlined in Hydrodata Web Questions document.

Official and Preliminary data are available by water year clicking on the station name and by selecting the water year and format selectors for each dataset. Additional Supplimental Reports for specific stations are available for downlaod from each station's drop-down menus.

Evaporation: Monthly Totals

Dataset: Sort By:
Site IdStation NameStart DateEnd DateActive
004ACasitas Dam09/01/1959 00:0010/01/2000 00:00Yes
152Piedra Blanca Guard Station10/01/1951 00:0010/01/1977 00:00Yes
160Piru-Temescal Guard Station10/01/1951 00:0010/01/2013 00:00Yes
169Thousand Oaks-Weather Station10/01/1969 00:0010/01/2008 00:00
171Fillmore-Fish Hatchery10/01/1969 00:0010/01/2008 00:00Yes
209Lockwood Valley-County Yard10/01/1970 00:0010/01/1992 00:00
227Lake Bard10/01/1966 00:0010/01/2010 00:00Yes
236Matilija Dam Weather Station10/01/1969 00:0010/01/2008 00:00
239El Rio-UWCD Spreading Grounds10/01/1972 00:0010/01/2013 00:00Yes

Data marked with 'P' are preliminary and subject to change until checked and evaluated. Data marked with 'U' are unverified and are subject to changed and evaluated. Unverified data may contain errors that have not been checked by Hydrology staff. Ventura County does not guarantee the accuracy of these data; please note that river flows may vary considerably during each day and from day to day.Oficial published data are marked with 'A '.