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South Magnolia Watershed Site 4 Dam
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South Magnolia Watershed Site 4 Dam Share
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Overview Share
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Missouri Valley, Iowa
Fire Protection / Stock / Small Fish Pond
Local government owned
Built in 1958

South Magnolia Watershed Site 4 Dam is an earth dam built on the Tr-Willow Creek River and is located in Missouri Valley, Iowa. It was built in 1958 for the purpose of fire protection / stock / small fish pond.

The dam is owned by the local government.

Location
South Magnolia Watershed Site 4 Dam
Missouri Valley, Iowa, U.S.
Dam type
Earth
Dam type
Fire protection / Stock / Small fish pond
Purpose
Unknown
Foundation type
Unknown
Core type
Ownership Share
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Harrison CO SWCD
Owner
Local government

South Magnolia Watershed Site 4 Dam is owned by the local government.

Construction Share
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1958
Completed
USDA NRCS
Dam designer
Tr-Willow Creek River
River built on
South Magnolia Watershed Site 4 Dam was built in 1958.
Metrics Share
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Summary
Dam length 515 feet
Dam height 34 feet
Max storage 106 acre feet
Normal storage 31 acre feet
Surface area 5 acres
Drainage area 1 square miles
515 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.

34 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.

106 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.

31 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.

5 acres
Surface area

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

1 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.

Safety Share
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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.

Not required
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.

About Share
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Latitude 41
Longitude -95
NID ID (National ID) IA00477

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