Nockamixon Dam, Pennsylvania, USA

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Quick Facts About Nockamixon Dam

Location: Bucks, Pennsylvania
Coordinates: 40.469722, -75.1858333
River: Tohickon Creek River
Primary Purpose: Recreation
Type: Rockfill
Commissioned: 1973
Dam Height: 112 ft (34 m)
Dam Length: 1,511 ft (461 m)
Dam Capacity: 71,000 acre-ft (87,577 Ml)

Nockamixon Dam Map

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Nockamixon Dam Information

Nockamixon Dam is a rockfill dam located in Bucks County, Pennsylvania.

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

The dam was designed by and commissioned in 1973 and is currently owned by DCNR.

Nockamixon Dam Structure

The Nockamixon Dam is approximately 1,511 feet (461 m) long, 112 feet (34 m) high and has a structural volume of cubic yards (0 cubic metres).

Nockamixon Dam Storage Capacity & Surface Area

The reservoir has a normal storage capacity of 40,000 acre-ft (49,339 Ml) and maximum capacity of 71,000 acre-ft (87,577 Ml).

The surface area of the reservoir is 1,450 acres (587 ha) and the total catchment area is 73 square miles (190 square kilometres).

Nockamixon Dam Spillway

According to the latest available data, the Nockamixon Dam does not have any spillways.

Nockamixon Dam Compared to Four Famous American Dams

Nockamixon Dam
Bucks, Pennsylvania
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) 112 730 550 357 216
Length (Ft) 1,511 1,244 5,673 6,920 1,565
Storage Volume (acre-ft) 71,000 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

Nockamixon Dam Weather

Current Conditions at Nockamixon Dam

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7-Day Forecast for Nockamixon Dam

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Nockamixon Dam Frequently Asked Questions

In which state is the Nockamixon Dam?

Nockamixon Dam is in Pennsylvania.

In which county is the Nockamixon Dam?

Nockamixon Dam is in Bucks County.

How high is the Nockamixon Dam?

Nockamixon Dam is 112 feet high.

How long is the Nockamixon Dam?

Nockamixon Dam is 1,511 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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