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Delton Dam
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Delton Dam Share
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Lake Delton, Wisconsin
Recreation
Local government owned
Built in 1931

Delton Dam is a gravity dam built on the Dell Creek River and is located in Lake Delton, Wisconsin. It was built in 1931 for the purpose of recreation.

The dam is owned by the local government. It is also known as Mirror Lake.

Location
Delton Dam
Lake Delton, Wisconsin, U.S.
Dam type
Gravity
Dam type
Recreation
Purpose
Unknown
Foundation type
Unknown
Core type
Ownership Share
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Sauk County - Parks & Recreation Department
Owner
Local government

Delton Dam is owned by the local government.

Construction Share
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1931
Completed
Dell Creek River
River built on
Delton Dam was built in 1931.
Metrics Share
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Summary
Dam length 150 feet
Dam height 19 feet
Structural height 19 feet
Hydraulic height 14 feet
Max discharge 2,790 cubic feet per second
Max storage 1,280 acre feet
Normal storage 870 acre feet
Surface area 137 acres
Drainage area 71 square miles
150 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.

19 feet
Dam height

Height of the dam is defined as the vertical distance between the lowest point on the crest of the dam and the lowest point in the original streambed.

19 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.

14 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.

2,790 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.

1,280 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.

870 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.

137 acres
Surface area

Surface area, in acres, of the impoundment at its normal retention level.

71 square miles
Drainage area

Drainage area of the dam, in square miles, which is defined as the area that drains to a particular point (in this case, the dam) on a river or stream.

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Low
Downstream potential hazard

Dams assigned the low hazard potential classification are those where failure or misoperation results in no probable loss of human life and low economic and/or environ-mental losses. Losses are principally limited to the owner’s property.

Has 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.

7/20/2006
Most recent inspection date

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Also known as Mirror Lake
Latitude 43
Longitude -89
NID ID (National ID) WI00190

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