Cougar Dam

Cougar Dam Quick Facts

Location: Lane, Oregon
Coordinates: 44.127884, -122.241084
River: South Fork Mckenzie River
Primary Purpose: Flood Risk Reduction
Type: Rockfill
Commissioned: 1963
Dam Height: 473 ft (144 m)
Dam Length: 1,600 ft (488 m)
Dam Capacity: 220,000 acre-ft (271,366 Ml)
Condition Assessment: Not Available
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Cougar Dam Map

Cougar Dam Information

Cougar Dam is a rockfill dam located in Springfield, Lane, Oregon.

The dam, which is on the South Fork Mckenzie River, was primarily built for Flood Risk Reduction purposes, but also serves for Irrigation, Navigation, Recreation and Hydroelectric benefits.

The dam was designed by CENWP and commissioned in 1963 and is currently owned by USACE – Portland District.

Cougar Dam Structure

The Cougar Dam is approximately 1,600 feet (488 m) long, 473 feet (144 m) high and has a structural volume of 13,000,000 cubic yards (9,939,215 cubic metres).

Cougar Dam Storage Capacity & Surface Area

The reservoir has a normal storage capacity of 208,000 acre-ft (256,564 Ml) and maximum capacity of 220,000 acre-ft (271,366 Ml).

The surface area of the reservoir is 1,280 acres (518 ha) and the total catchment area is 208 square miles (539 square kilometres).

Cougar Dam Spillway

The dam has a 89 feet (27 m) wide controlled spillway with a maximum discharge capacity of 76000 cubic feet per second (2152 cubic metres per second).

Cougar Dam Compared to Five Famous American Dams

Height (ft)
Length (Ft)
Storage Volume (acre-ft)
Drainage Area (sq miles)
 
Cougar Dam
Lane, Oregon
Height (ft)
473
Length (Ft)
1,600
Storage Volume (acre-ft)
220,000
Drainage Area (sq miles)
208
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

Cougar Dam Weather

Current Conditions at Cougar Dam

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7-Day Forecast for Cougar Dam

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Cougar Dam Frequently Asked Questions

In which state is the Cougar Dam?

Cougar Dam is in Oregon.

In which county is the Cougar Dam?

Cougar Dam is in Lane County.

How high is the Cougar Dam?

Cougar Dam is 473 feet high.

How long is the Cougar Dam?

Cougar Dam is 1,600 feet long.

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More Dams in Lane County:

Blue River Dam
Cottage Grove Dam
Cougar Dam
Dexter Dam
Dorena Dam
Fall Creek Dam
Fern Ridge Dam
Frd No 51 Dam
Hills Creek Dam
Lookout Point Dam
Siltcoos Lake 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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