General

• Vicinity Map
• Region (Map) ....................... Great Plains
• State (Map) ............................... Colorado
• County .......................................... Larimer
• Project ............ Colorado-Big Thompson
• Dam type ...................... Concrete gravity
    with embankment wing dams
• Location ........ 1.5 mi E of Estes Park, CO
• Watercourse ......... Big Thompson River
• Reservoir ................................. Lake Estes
• Original construction .............. 1947-1949
• National ID Number .................. CO01662
• Hydrologic Unit Code ......................

Hydraulics

• Total storage to
    El. 7475 ................................ 3,068 acre-ft
• Service spillway
    Capacity at El. 7475 ............... 21,200 cfs
• Outlet works capacity .................... 60 cfs
• Canal siphon capacity .................. 550 cfs

Dimensions

• Crest Elevation (concrete dam) ....... Varies
    from 7478.0 to 7481.0 ft
• Structural Height .................................. 70 ft
• Hydraulic Height .................................. 45 ft
• Crest Length (concrete dam) ............ 320 ft
• Crest Width (concrete dam) ............... 10 ft
• Base Width (concrete dam) ............. 49.5 ft
• Volume of Concrete ............... 21,000 cu yd

Hydrology

• Drainage area ............................... 158 sq mi
• Hydrometeorological Report ............... NA
• PMF ............................. 1981 General Storm
• Volume ............. 79,000 acre-ft over 2 days
• Peak inflow .................................  83,900 cfs
• Maximum water surface ................ 7487.0 ft