Hecla-day Mine Aspen Tailings Dam

Significant HazardFair ConditionEmergency Action Plan: Yes

Location

StateWashington
CountyFerry
Nearest CityRepublic
River/StreamTr-Granite Creek
Coordinates48.67438, -118.75480

Physical Characteristics

Dam TypeEarth
NID Height95 ft
Dam Length1,050 ft
Year Completed1940 (86 years old)

Storage & Hydraulics

NID Storage625 acre-ft
Max Storage625 acre-ft
Normal Storage365 acre-ft
Surface Area38 acres
Drainage Area0 sq mi
Max Discharge166 cfs

Ownership & Safety

PurposeTailings
OwnerHecla Mining Co.
Owner TypePrivate
Hazard ClassificationSignificant
Condition AssessmentFair
Last Inspection08/19/2024
Emergency Action PlanYes

Identifiers

NID IDWA00379
Federal IDWA00379
More InfoState Dam Safety Program

Nearby Dams

Hecla-day Mine Aspen Tailings Saddle Dam 0.2 mi Significant Hecla Groundwater Management Impoundment 0.3 mi Significant Longeway Dam 3.5 mi Low Kinross Old Reclaim Pond 6.5 mi Significant Kinross Gold Kettle River Tailings Dam 6.8 mi High