Green River Dam, Vermont, USA

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Quick Facts About Green River Dam

Location: Lamoille, Vermont
Coordinates: 44.6256, -72.5317
River: Green River
Primary Purpose: Hydroelectric
Type: Arch
Commissioned: 1947
Dam Height: 105 ft (32 m)
Dam Length: 360 ft (110 m)
Dam Capacity: 16,900 acre-ft (20,846 Ml)
Condition Assessment: Satisfactory

Green River Dam Map

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Green River Dam Information

Green River Dam is an arch dam located about 5 miles from Morrisville, Lamoille, Vermont.

The dam, which is on the Green River, was primarily built for Hydroelectric purposes, but also serves for Recreation benefits.

The dam was designed by and commissioned in 1947 and is currently owned by Village of Morrisville, VT.

Green River Dam Structure

The Green River Dam is approximately 360 feet (110 m) long, 105 feet (32 m) high and has a structural volume of cubic yards (0 cubic metres).

Green River Dam Storage Capacity & Surface Area

The reservoir has a normal storage capacity of 16,900 acre-ft (20,846 Ml) and maximum capacity of 16,900 acre-ft (20,846 Ml).

The surface area of the reservoir is 625 acres (253 ha) and the total catchment area is 15 square miles (38 square kilometres).

Green River Dam Spillway

The dam has a 60 feet (18 m) wide uncontrolled spillway with a maximum discharge capacity of 7143 cubic feet per second (202 cubic metres per second).

Green River Dam Compared to Four Famous American Dams

Green River Dam
Lamoille, Vermont
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) 105 730 550 357 216
Length (Ft) 360 1,244 5,673 6,920 1,565
Storage Volume (acre-ft) 16,900 30,237,000 9,562,000 3,540,000 29,875,000
Drainage Area (sq miles) 15 167,800 74,100 3,611 108,355

Green River Dam Weather

Current Conditions at Green River Dam

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7-Day Forecast for Green River Dam

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Green River Dam Frequently Asked Questions

In which state is the Green River Dam?

Green River Dam is in Vermont.

In which county is the Green River Dam?

Green River Dam is in Lamoille County.

How high is the Green River Dam?

Green River Dam is 105 feet high.

How long is the Green River Dam?

Green River Dam is 360 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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