General

• Vicinity Map
• Region (Map) ....................... Great Plains
• State (Map) .............................. Wyoming
• County ......................................... Natrona
• Project ................................... North Platte
• Dam type ......... Cyclopean masonry arch gravity
• Location .......... 47 mi SW of Casper, WY
• Watercourse .............. North Platte River
• Reservoir ................................. Pathfinder
• Original construction .............. 1905-1909
• Modified in ........ 1910-1912, 1915, 1919-1922,
    1931, 1949-1950, 1958-1961, 1996-1997
• National ID Number ................ WY01296
• Hydrologic Unit Code ................

Hydraulics

• Total storage to
    El. 5858.1 ...................... 1,016,500 acre-ft
• Service spillway
    Capacity at El. 5858.1 ............ 33,940 cfs
• Outlet works
    Capacity at El. 58581 ............... 3,000 cfs
• Fremont Canyon Bypass
    Capacity at El. 5850.1 ................. 380 cfs
• Maximum power outlet
    Capacity .................................... 2,080 cfs

Dimensions

• Crest Elevation .............................. 5858.1 ft
• Structural Height ................................ 214 ft
• Hydraulic Height ................................ 192 ft
• Crest Length ....................................... 432 ft
• Crest Width ....................................... 10.9 ft
• Base Width ........................................ 96.5 ft
• Volume of Concrete ............... 65,700 cu yd

Hydrology

• Drainage area .......................... 14,600 sq mi
• Hydrometeorological Report .... HMR 55A
• PMF ...................... 1989 June rain on snow
• Volume ........... 2,582,000 acre-ft in 15 days
• Peak inflow ................................ 476,000 cfs
• Maximum water surface ................ 5876.7 ft