Clark Canyon Dam, Montana, USA

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Quick Facts About Clark Canyon Dam

Location: Beaverhead, Montana
Coordinates: 45.0002, -112.8588
River: Beaverhead River
Primary Purpose: Flood Risk Reduction
Type: Earth
Commissioned: 1963
Dam Height: 148 ft (45 m)
Dam Length: 2,950 ft (899 m)
Dam Capacity: 328,979 acre-ft (405,789 Ml)
Condition Assessment: Not Available

Clark Canyon Dam Map

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Clark Canyon Dam Information

Clark Canyon Dam is an earthen embankment dam located about 20 miles from Dillon, Beaverhead, Montana.

The dam, which is on the Beaverhead River, was primarily built for Flood Risk Reduction purposes, but also serves for Irrigation benefits.

The dam was designed by US Bureau of Reclamation and commissioned in 1963 and is currently owned by US Bureau of Reclamation.

Clark Canyon Dam Structure

The Clark Canyon Dam is approximately 2,950 feet (899 m) long, 148 feet (45 m) high and has a structural volume of 1,970,000 cubic yards (1,506,173 cubic metres).

Clark Canyon Dam Storage Capacity & Surface Area

The reservoir has a normal storage capacity of 178,062 acre-ft (219,636 Ml) and maximum capacity of 328,979 acre-ft (405,789 Ml).

The surface area of the reservoir is 6,606 acres (2,673 ha) and the total catchment area is 2,315 square miles (5,996 square kilometres).

Clark Canyon Dam Spillway

The dam has a 70 feet (21 m) wide uncontrolled spillway with a maximum discharge capacity of 9700 cubic feet per second (275 cubic metres per second).

Clark Canyon Dam Compared to Four Famous American Dams

Clark Canyon Dam
Beaverhead, Montana
Hoover Dam
Clark County, Nevada
Grand Coulee Dam
Okanogan County, Washington
Theodore Roosevelt Dam
Maricopa County, Arizona
Glen Canyon Dam
Coconino County, Arizona
Height (ft) 148 730 550 357 216
Length (Ft) 2,950 1,244 5,673 6,920 1,565
Storage Volume (acre-ft) 328,979 30,237,000 9,562,000 3,540,000 29,875,000
Drainage Area (sq miles) 2,315 167,800 74,100 3,611 108,355

Clark Canyon Dam Weather

Current Conditions at Clark Canyon Dam

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7-Day Forecast for Clark Canyon Dam

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Clark Canyon Dam Frequently Asked Questions

In which state is the Clark Canyon Dam?

Clark Canyon Dam is in Montana.

In which county is the Clark Canyon Dam?

Clark Canyon Dam is in Beaverhead County.

How high is the Clark Canyon Dam?

Clark Canyon Dam is 148 feet high.

How long is the Clark Canyon Dam?

Clark Canyon Dam is 2,950 feet long.

Condition Assessment Classification

Satisfactory

No existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.

Fair

No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum

Poor

A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.

Unsatisfactory

A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.

Not Rated

The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.

Not Available

Dams for which the condition assessment is restricted to approved government users.

Hazard Potential Classification

High

Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.

Significant

Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be in areas with population and significant infrastructure.

Low

Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner’s property.

Undetermined

Dams for which a downstream hazard potential has not been designated or is not provided.

Not Available

Dams for which the downstream hazard potential is restricted to approved government users.

Source: National Inventory of Dams

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