Casitas Dam


Casitas Dam

Casitas Dam is a dam on Coyote Creek that forms Lake Casitas near Ojai, California. The dam is located two miles (3 km) above the junction of Coyote Creek and the Ventura River. Water from the Ventura River is diverted to Lake Casitas as well. The 334 foot (102 m) tall earthfill dam was built by the U.S. Bureau of Reclamation. It is a key part of the Ventura River Project. Construction was completed in 1959. Lake Casitas has a capacity of 254,000 acre-feet (313,000,000 m³) and stores water for irrigation and municipal use for those within the Casitas Municipal Water District.

RegionFacilities in Mid-Pacific | Mid-Pacific Home Page
ProjectVentura River
Dam Type
WatercourseCoyote Creek
Original Construction1956-1959
Modified Construction
National ID NumberCA10139
Hydrologic Unit Code

Structural Height334.0 ft
Hydraulic Height (Normal Operating Depth at Dam)261.0 ft
Top Parapet (Elevation)
Spillway Crest Elevation567.0 ft
Crest Elevation585.0 ft
Crest Length2000.0 ft
Crest Width
Base Width
Volume of Dam Construction Materials
Streambed at Dam Axis300.0 ft
Top of Exclusive Flood Control Pool (Elevation)
Top of Joint Use Pool (Elevation)
Top of Active Conservation Pool (Elevation)567.0 ft
Top of Inactive Conservation Pool (Elevation)
Top of Dead Storage Pool (Elevation)350.0 ft

Hydraulics & Hydrology
Total Water Storage at Elevation
Maximum Water Surface Elevation
Normal Water Surface Elevation567.0 ft
Spillway Type
Auxiliary SpillwayNo
Spillway Capacity at Elevation7400 cfs at 578.7 ft
Auxiliary Spillway Capacity at Elevation
Uncontrolled Spillway Capacity at Elevation
Outlet Works Capacity at Elevation570 cfs at 567.0 ft
Diversion Capacity at Elevation
Drainage Area38.3 sq mi
Hydrometeorological Report (HMR)HMR 36
Probable Maximum Flood (PMF) Report

Contact Information
TitleArea Office Manager
OrganizationSouth-Central California Area Office
Address1243 "N" Street
CityFresno, CA 93721-1813
Phone (Office)559-487-5116
OrganizationCasitas Municipal Water District
AddressPO Box 37
CityOak View, CA 93022
Phone (Fax)805 649-3001
Phone (Office)805 649-2251

Last updated: Jun 04, 2009