Big St Germain Dam, Wisconsin, USA

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Quick Facts About Big St Germain Dam

Location: Vilas, Wisconsin
Coordinates: 45.9184, -89.5324
River: St Germain River
Primary Purpose: Hydroelectric
Type: Gravity Concrete Earth
Commissioned: 1923
Dam Height: 7 ft (2 m)
Dam Length: 117 ft (36 m)
Dam Capacity: 33,655 acre-ft (41,513 Ml)
Condition Assessment: Satisfactory

Big St Germain Dam Map

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Big St Germain Dam Information

Big St Germain Dam is a gravity concrete earth dam located about 30 miles from Rhinelander, Vilas, Wisconsin.

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

The dam was designed by and commissioned in 1923 and is currently owned by Wisconsin Valley Improvement Company.

Big St Germain Dam Structure

The Big St Germain Dam is approximately 117 feet (36 m) long, 7 feet (2 m) high and has a structural volume of cubic yards (0 cubic metres).

Big St Germain Dam Storage Capacity & Surface Area

The reservoir has a normal storage capacity of acre-ft (0 Ml) and maximum capacity of 33,655 acre-ft (41,513 Ml).

The surface area of the reservoir is acres (0 ha) and the total catchment area is 73 square miles (189 square kilometres).

Big St Germain Dam Spillway

The dam spillway has a maximum discharge capacity of 458 cubic feet per second (13 cubic metres per second).

Big St Germain Dam Compared to Four Famous American Dams

Big St Germain 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) 7 730 550 357 216
Length (Ft) 117 1,244 5,673 6,920 1,565
Storage Volume (acre-ft) 33,655 30,237,000 9,562,000 3,540,000 29,875,000
Drainage Area (sq miles) 73 167,800 74,100 3,611 108,355

Big St Germain Dam Weather

Current Conditions at Big St Germain Dam

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7-Day Forecast for Big St Germain Dam

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Big St Germain Dam Frequently Asked Questions

In which state is the Big St Germain Dam?

Big St Germain Dam is in Wisconsin.

In which county is the Big St Germain Dam?

Big St Germain Dam is in Vilas County.

How high is the Big St Germain Dam?

Big St Germain Dam is 7 feet high.

How long is the Big St Germain Dam?

Big St Germain Dam is 117 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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