General

• Vicinity Map
• Region (Map) ............. Pacific Northwest
• State (Map) .................................. Oregon
• County ........................................ Malheur
• Project .......................................... Owyhee
• Dam type .............. Concrete arch gravity
• Location ........... 11 mi SW of Adrian, OR
• Watercourse ..................... Owyhee River
• Reservoir ............................ Lake Owyhee
• Original construction ............. 1928-1932
• Modified in .............................. 1990-1993
• National ID Number ................. OR00582
• Hydrologic Unit Code ..................

Hydraulics

• Total storage to
    El. 2675 ......................... 1,183,300 acre-ft
• Service spillway
    Capacity at El. 2675 ............... 41,790 cfs
• River outlet works
    Capacity at El. 2675 ................. 2,530 cfs
• Tunnel No. 1 capacity ............... 1,100 cfs

Dimensions

• Crest Elevation .............................. 2675.0 ft
• Structural Height ................................ 417 ft
• Hydraulic Height ................................ 325 ft
• Crest Length ....................................... 833 ft
• Crest Width ........................................... 30 ft
• Base Width .......................................... 265 ft
• Volume of Concrete ............. 537,500 cu yd

Hydrology

• Drainage area .......................... 10,900 sq mi
• Hydrometeorological Report ....... HMR 57
• PMF ............ 1994 December general storm
• Volume ....... 1,917,000 acre-ft over 15 days
• Peak inflow ................................. 356,000 cfs
• Maximum water surface ................ 2702.7 ft