Lochmere Dam, New Hampshire, USA

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Quick Facts About Lochmere Dam

Location: Belknap, New Hampshire
Coordinates: 43.4732, -71.5336
River: Winnipesaukee River
Primary Purpose: Hydroelectric
Type: Masonry Concrete Other
Commissioned: 1910
Dam Height: 11 ft (3 m)
Dam Length: 223 ft (68 m)
Dam Capacity: 33,280 acre-ft (41,050 Ml)
Condition Assessment: Satisfactory

Lochmere Dam Map

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Lochmere Dam Information

Lochmere Dam is a masonry concrete other dam located about 1 miles from East Tilton, Belknap, New Hampshire.

The dam, which is on the Winnipesaukee River, was primarily built for Hydroelectric purposes, but also serves for Fire Protection, Stock, Or Small Fish Pond and Recreation benefits.

The dam was designed by and commissioned in 1910 and is currently owned by .

Lochmere Dam Structure

The Lochmere Dam is approximately 223 feet (68 m) long, 11 feet (3 m) high and has a structural volume of cubic yards (0 cubic metres).

Lochmere Dam Storage Capacity & Surface Area

The reservoir has a normal storage capacity of 20,800 acre-ft (25,656 Ml) and maximum capacity of 33,280 acre-ft (41,050 Ml).

The surface area of the reservoir is 4,264 acres (1,726 ha) and the total catchment area is 428 square miles (1,109 square kilometres).

Lochmere Dam Spillway

The dam spillway has a maximum discharge capacity of 2400 cubic feet per second (68 cubic metres per second).

Lochmere Dam Compared to Four Famous American Dams

Lochmere Dam
Belknap, New Hampshire
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) 11 730 550 357 216
Length (Ft) 223 1,244 5,673 6,920 1,565
Storage Volume (acre-ft) 33,280 30,237,000 9,562,000 3,540,000 29,875,000
Drainage Area (sq miles) 428 167,800 74,100 3,611 108,355

Lochmere Dam Weather

Current Conditions at Lochmere Dam

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7-Day Forecast for Lochmere Dam

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Lochmere Dam Frequently Asked Questions

In which state is the Lochmere Dam?

Lochmere Dam is in New Hampshire.

In which county is the Lochmere Dam?

Lochmere Dam is in Belknap County.

How high is the Lochmere Dam?

Lochmere Dam is 11 feet high.

How long is the Lochmere Dam?

Lochmere Dam is 223 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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