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Macgregor Downs Lake Dam
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Macgregor Downs Lake Dam Share
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Smithfield (Glasgow RD at Dam), North Carolina
Recreation
Local government owned
Built in 1948

Macgregor Downs Lake Dam is an earth dam built on the Swift Creek River and is located in Smithfield (Glasgow RD at Dam), North Carolina. It was built in 1948 for the purpose of recreation.

The dam is owned by the local government.

Location
Macgregor Downs Lake Dam
Smithfield (Glasgow RD at Dam), North Carolina, U.S.
Dam type
Earth
Dam type
Recreation
Purpose
Unknown
Foundation type
Unknown
Core type
Ownership Share
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Town of Cary Dot
Owner
Local government

Macgregor Downs Lake Dam is owned by the local government.

Construction Share
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1948
Completed
Swift Creek River
River built on
Macgregor Downs Lake Dam was built in 1948.
Metrics Share
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Summary
Dam length 960 feet
Structural height 35 feet
Hydraulic height 25 feet
Max discharge 234 cubic feet per second
Max storage 486 acre feet
Normal storage 400 acre feet
960 feet
Dam length

Length of the dam is defined as the length along the top of the dam. This also includes the spillway, powerplant, navigation lock, fish pass, etc., where these form part of the length of the dam. If detached from the dam, these structures should not be included.

35 feet
Structural height

Structural height of the dam is defined as the vertical distance from the lowest point of the excavated foundation to the top of the dam. Top of dam refers to the parapet wall and not the crest.

25 feet
Hydraulic height

Hydraulic height of the dam is defined as the vertical difference between the maximum design water level and the lowest point in the original streambed.

234 cubic feet per second
Max discharge

Number of cubic feet per second the spillway is capable of discharging when the reservoir is at its maximum designed water surface elevation.

486 acre feet
Max storage

Maximum storage is defined as the total storage space in a reservoir below the maximum attainable water surface elevation, including any surcharge storage.

400 acre feet
Normal storage

Normal storage is defined as the total storage space in a reservoir below the normal retention level, including dead and inactive storage and excluding any flood control or surcharge storage. For normally dry flood control dams, the normal storage will be a zero value.

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Significant
Downstream potential hazard

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 located in areas with population and significant infrastructure.

No emergency action plan
Emergency action plan

An emergency action plan is defined as a plan of action to be taken to reduce the potential for property damage and loss of life in an area affected by a dam failure or large flood.

2/21/2018
Most recent inspection date

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Distance to nearest town (miles) 45
Latitude 35
Longitude -78
NID ID (National ID) NC00848

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