Red Dog Tailings Main Dam

Red Dog Tailings Main Dam is a rockfill dam located in Northwest Arctic Borough, Alaska, built in 1993. It carries a High hazard potential classification and has a satisfactory condition assessment.

Hazard potentialHighFailure would probably cost lives
ConditionSatisfactoryBest of 4 ratings
Emergency action planOn file
Last inspection08/03/2020
Height208 ft
Built199333 years ago

Dam profile

NID height · 208 ft
208 FT STATUE OF LIBERTY

208 ft tall and 5,700 ft long, taller than 99% of U.S. dams with a recorded height. Height is drawn to scale against the Statue of Liberty, 305 ft ground to torch; the profile is a generic rockfill embankment section and the water level is illustrative.

About Red Dog Tailings Main Dam

The primary purpose of Red Dog Tailings Main Dam is tailings. Tailings dams contain waste material from mining operations — typically a slurry of finely ground rock left over after valuable minerals have been extracted. These structures require ongoing monitoring because tailings can contain heavy metals and other contaminants. The dam is owned by Teck Alaska Inc. (private). It impounds the S.f. Red Dog Cr near Kivalina.

The dam stands 208 feet tall and stretches 5,700 feet across, creates a reservoir covering 629 acres, has a maximum storage capacity of 40,030 acre-feet, and collects water from a drainage area of 2 square miles. Completed in 1993, the structure is 33 years old.

This dam carries a high hazard potential classification, which means that a failure or uncontrolled release of water would likely cause loss of human life. This classification reflects the consequences of failure, not the likelihood — it indicates that people live or work in the area downstream. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 08/03/2020.

At 208 feet, this dam is taller than 99% of all dams in the United States.

Living Downstream

If you live or work downstream of this dam, consider taking these steps: learn your local evacuation routes, check whether your county emergency management office has a dam failure inundation map, and sign up for local emergency alerts. The Alaska dam safety program can provide more specific information about emergency planning for this structure.

Search for dams near your address to see all dams in your area with hazard classifications and safety data.

Location

StateAlaska
CountyNorthwest Arctic Borough
Nearest CityKivalina
River/StreamS.f. Red Dog Cr
Coordinates68.06882, -162.86708

Physical Characteristics

Dam TypeRockfill
NID Height208 ft
Dam Height208 ft
Dam Length5,700 ft
Year Completed1993 (33 years old)

Storage & Hydraulics

NID Storage40,030 acre-ft
Max Storage40,030 acre-ft
Normal Storage36,750 acre-ft
Surface Area629 acres
Drainage Area2 sq mi
Spillway TypeNone

Ownership & Safety

PurposeTailings
OwnerTeck Alaska Inc.
Owner TypePrivate
Hazard ClassificationHigh
Condition AssessmentSatisfactory
Last Inspection08/03/2020
Emergency Action PlanYes

Identifiers

NID IDAK00201
Federal IDAK00201
More InfoState Dam Safety Program