USA
Wyoming
Eastern Shoshone & Northern Arapaho Tribes
Safety modifications to the existing earthen dam. Major items of work include develop and implement phased stream diversion; foundation dewatering; internal seepage collection drain system; low-permeability blanket seepage barrier upstream; deep toe drain collector system; demolition of existing outlet works and installation of new conduit and stilling basin; replace outlet work control gates and operator with modifications to gate chamber and structure. Construction of new service spillway and footbridge; raising and leveling crest of main dam and three dikes; and new instrumentation
Type of Dam: Earth-fill
Height: 82 feet; 25 m
Crest Length: 2,400 feet; 700 m
Conventional Concrete: 4,500 cy; 3,400 m3