General

• Region (Map) : .......... Mid-Pacific
• State (Map) ................ California
• County ........................ Santa Barbara
• Project: ........................ Cachuma
• Dam type: ................... Earthfill
• Location: .................... Near Summerland
• Watercourse: ............. Offstream Storage
• Reservoir .................... Ortega
• Construction Date: ... 1953-1954
• National ID Number ... CA10176
• Hydrologic Unit Code .....

Dimensions

• Crest Elevation of Dam: ...................... 460.85 ft
• Structural Height of Dam: ................... 131.00 ft
• Crest Length: ........................................ 430.00 ft
• Top of Joint Use: .......................................... NA
• Top of Active Conservation: ............. 458.10 ft
• Top of Inactive Conservation: ................... NA
• Spillway Crest: ......................................459.85 ft
• Top of Dead Storage: .................................. NA
• Streambed at Dam Axis : ............................. NA

Hydraulics

• Normal Water Surface Elev: ................ 458.1 ft
• Hydraulic Height: .................................... 18.0 ft
• Service Spillway Type:
•    Uncontrolled  Crest    ............................... Yes
•    Morning-Glory ............................................No
•    Crest Length    ...................................... 23.0 ft
•    Gated      ...................................................... No
•    Capacity at Elev:  0 ft, .......................... 22 cfs
• Auxiliary Spillway ......................................... No
•     Capacity at Elev.   .................................... NA
• Outlet Works Capacity at
•     Elevation  0.0 ft.,  ................................. 26 cfs

Hydrology

• Drainage Area: ....................................... 4 acres
• Hydrometeorological Report (HMR)  HMR 36
• Flood Type: .................... Winter Type General
• Storm Duration: ........................................ 72 hrs
• Probable Maximum Flood (PMF) Report:  
•   Peak Inflow: ............................................ 13 cfs
•   Inflow Volume: ................................. 12 acre-ft
•   Flow Duration: ....................................... 72 hrs
•   PMF Routing MWS Elev ..................460.03 ft
•   Initial Routing Elev: .......................... 458.10 ft
•   Study Date: ........................... September 1983