Clark Canyon Dam

Clark Canyon Dam Quick Facts

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
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Clark Canyon Dam Map

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 Five Famous American Dams

Height (ft)
Length (Ft)
Storage Volume (acre-ft)
Drainage Area (sq miles)
 
Clark Canyon Dam
Beaverhead, Montana
Height (ft)
148
Length (Ft)
2,950
Storage Volume (acre-ft)
328,979
Drainage Area (sq miles)
2,315
Hoover Dam
Clark County, Nevada
Height (ft)
730
Length (Ft)
1,244
Storage Volume (acre-ft)
30,237,000
Drainage Area (sq miles)
167,800
Grand Coulee Dam
Okanogan County, Washington
Height (ft)
550
Length (Ft)
5,673
Storage Volume (acre-ft)
9,562,0000
Drainage Area (sq miles)
74,100
Theodore Roosevelt Dam
Maricopa County, Arizona
Height (ft)
357
Length (Ft)
1,208
Storage Volume (acre-ft)
3,411,500
Drainage Area (sq miles)
5,736
Oroville Dam
Butte County, California
Height (ft)
235
Length (Ft)
6,920
Storage Volume (acre-ft)
3,540,000
Drainage Area (sq miles)
3,611
Glen Canyon Dam
Coconino County, Arizona
Height (ft)
216
Length (Ft)
1,565
Storage Volume (acre-ft)
29,875,000
Drainage Area (sq miles)
108,355

Clark Canyon Dam Weather

Current Conditions at Clark Canyon Dam

Parameter Value
Current Time 22:03
Sunrise 07:47
Sunset 18:46
Temperature (°F) 57
Feels Like (°F) 54
Cloud Coverage (%) 3
Pressure (inHg) 1015
Humidity (%) 34
Wind Speed (mph) 9
Rain (mm) 0

7-Day Forecast for Clark Canyon Dam

Day Min Temp (°F) Max Temp (°F) Feels Like (°F) Pressure (inHg) Humidity (%) Wind Speed (mph) Wind Gust (mph) Wind Dir Precip Prob (%) Precip Volume (mm) Weather
Today 44 73 67 1015 16 11 15 SSE 0 - clear sky
Wed 44 70 66 1003 16 25 33 SW 0 - broken clouds
Thu 31 48 43 1002 29 15 25 NNW 100 - snow
Fri 21 36 26 1023 59 10 16 NE 100 - light snow
Sat 18 50 40 1023 38 4 8 SSW 0 - clear sky
Sun 32 51 46 1015 62 11 15 SSE 0 - overcast clouds
Mon 34 45 38 1016 90 10 15 SSE 100 2 rain and snow
Tue 31 53 43 1017 38 18 26 W 0 - overcast clouds

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.

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More Dams in Beaverhead County:

Clark Canyon Dam
Lima Dam

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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