General

• Vicinity Map
• Region (Map) ............... Upper Colorado
• State (Map) ....................................... Utah
• County ..................................... Duchesne
• Project ............................ CUP-Bonneville
• Dam type ...................... Concrete gravity
• Location .... 31 mi NW of Duchesne, UT
• Watercourse ......................... Rock Creek
• Reservoir ....................... Upper Stillwater
• Original construction ............. 1983-1987
• National ID Number .................. UT82911
• Hydrologic Unit Code ..............

Hydraulics

• Total storage to
    El. 8172 .............................. 32,009 acre-ft
• Service spillway
    Capacity at El. 8175.5 ............ 15,000 cfs
• River outlet works
    Capacity at El. 8172 ...................... 29 cfs
• Upper Stillwater Pipeline
    Capacity at El. 8172 .................... 285 cfs
• Overflow channel capacity ...... 1,015 cfs
• Docs Feeder Pipeline ................... 100 cfs

Dimensions

• Crest Elevation .............................. 8177.5 ft
• Top of Parapet Elevation ............. 8182.0 ft
• Structural Height ................................ 292 ft
• Hydraulic Height ................................ 185 ft
• Crest Length ..................................... 2650 ft
• Crest Width ........................................... 29 ft
• Base Width ......................................... 177 ft
• Volume of RCC .................. 1,470,000 cu yd
• Vol. of Facing Concrete ........ 91,000 cu yd
• Vol. of Level Concrete ........... 45,000 cu yd
• Vol. of Structural Concrete .... 14,200 cu yd

Hydrology

• Drainage area ............................... 102 sq mi
• Hydrometeorological Report ....... HMR 49
• PMF .................... 1985 Local thunderstorm
• Volume ...... 22,400 acre-feet over 31 hours
• Peak inflow .................................. 80,400 cfs
• Maximum water surface ................ 8182.0 ft