Twin Lakes Dam, Wisconsin, USA

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Quick Facts About Twin Lakes Dam

Location: Vilas, Wisconsin
Coordinates: 46.0223, -89.1685
River: Twin River
Primary Purpose: Hydroelectric
Type: Gravity Concrete Earth
Commissioned: 1908
Dam Height: 10 ft (3 m)
Dam Length: 157 ft (48 m)
Dam Capacity: 93,526 acre-ft (115,362 Ml)
Condition Assessment: Satisfactory

Twin Lakes Dam Map

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Twin Lakes Dam Information

Twin Lakes Dam is a gravity concrete earth dam located about 20 miles from Eagle River, Vilas, Wisconsin.

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

The dam was designed by and commissioned in 1908 and is currently owned by Wisconsin Valley Improvement Company.

Twin Lakes Dam Structure

The Twin Lakes Dam is approximately 157 feet (48 m) long, 10 feet (3 m) high and has a structural volume of cubic yards (0 cubic metres).

Twin Lakes Dam Storage Capacity & Surface Area

The reservoir has a normal storage capacity of acre-ft (0 Ml) and maximum capacity of 93,526 acre-ft (115,362 Ml).

The surface area of the reservoir is acres (0 ha) and the total catchment area is 26 square miles (67 square kilometres).

Twin Lakes Dam Spillway

The dam spillway has a maximum discharge capacity of 399 cubic feet per second (11 cubic metres per second).

Twin Lakes Dam Compared to Four Famous American Dams

Twin Lakes Dam
Vilas, Wisconsin
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) 10 730 550 357 216
Length (Ft) 157 1,244 5,673 6,920 1,565
Storage Volume (acre-ft) 93,526 30,237,000 9,562,000 3,540,000 29,875,000
Drainage Area (sq miles) 26 167,800 74,100 3,611 108,355

Twin Lakes Dam Weather

Current Conditions at Twin Lakes Dam

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7-Day Forecast for Twin Lakes Dam

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Twin Lakes Dam Frequently Asked Questions

In which state is the Twin Lakes Dam?

Twin Lakes Dam is in Wisconsin.

In which county is the Twin Lakes Dam?

Twin Lakes Dam is in Vilas County.

How high is the Twin Lakes Dam?

Twin Lakes Dam is 10 feet high.

How long is the Twin Lakes Dam?

Twin Lakes Dam is 157 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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