General

• Vicinity Map
• Region (Map) ............. Pacific Northwest
• State (Map) ................................ Montana
• County ........................................ Flathead
• Project ............................... Hungry Horse
• Dam type ................. Concrete thick arch
• Location ........ 9 mi SW of Columbia Falls, MT
• Watercourse ....... South Fork of Flathead River
• Reservoir ........................... Hungry Horse
• Original construction .............. 1948-1953
• Modified in ............................... 1994-1995
• National ID Number ................. MT00565
• Hydrologic Unit Code ...............

Hydraulics

• Total storage to
•   El. 3560 ......................... 3,467,179 acre-ft
• Service spillway
    Capacity at El. 3565 ............... 53,000 cfs
• Outlet works
    Capacity at El. 3565 ............... 14,040 cfs
• Power outlet capacity ............. 11,200 cfs

Dimensions

• Crest Elevation .............................. 3565.0 ft
• Structural Height ................................ 564 ft
• Hydraulic Height ................................ 515 ft
• Crest Length ..................................... 2115 ft
• Crest Width ........................................... 34 ft
• Base Width ......................................... 320 ft
• Volume of Concrete .......... 2,934,500 cu yd

Hydrology

• Drainage area ............................ 1,640 sq mi
• Hydrometeorological Report ............... NA
• PMF .............. 1983 Summer Thunderstorm
• Volume ............ 107,700 acre-ft over 3 days
• Peak inflow ................................ 168,300 cfs
• Maximum water surface ............... 3,562.3 ft