General

• Vicinity Map
• Region (Map) ........................ Mid Pacific
• State (Map) .............................. California
• County ........................................... Colusa
• Project ............................................ Orland
• Dam type ................. Concrete thick arch
• Location ..... 33 miles SW of Orland, CA
• Watercourse .............. Little Stony Creek
• Reservoir ................................... East Park
• Original construction .............. 1908-1910
• Modified ............................................ 1914
• National ID Number ................. CA10145
• Hydrologic Unit Code ........

Hydraulics

• Total storage to
    El. 1198.18 ......................... 48,211 acre-ft
• Total storage to
    El. 1199.68 ......................... 50,889 acre-ft
• Service spillway
    Capacity at El. 1201.68 ............ 9,200 cfs
• Outlet works
    Capacity at El. 1198.18 ............... 750 cfs

Dimensions

• Crest Elevation ............................ 1198.68 ft
• Top of Parapet Elevation ........... 1201.68 ft
• Structural Height ................................ 139 ft
• Hydraulic Height .................................. 90 ft
• Crest Length ....................................... 266 ft
• Crest Width .......................................... 10 ft
• Base Width ........................................... 86 ft
• Volume of Concrete ............... 12,400 cu yd

Hydrology

• Drainage area ............................... 102 sq mi
• Hydrometeorological Report ....... HMR 58
• PMF .............................. 1996 General Storm
• Volume ..... 115,000 acre-ft over three days
• Peak inflow .................................. 69,200 cfs
• Maximum water surface ........ El. 1208.56 ft