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MC Donald Subwatershed Site 1 Dam
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MC Donald Subwatershed Site 1 Dam Share
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Overview Share
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Mapleton, Iowa
Local government owned
Built in 1985

MC Donald Subwatershed Site 1 Dam is an earth dam built on the Tr-Little Sioux River and is located in Mapleton, Iowa. It was built in 1985 .

The dam is owned by the local government. It is also known as Mcdonald SWS.

Location
MC Donald Subwatershed Site 1 Dam
Mapleton, Iowa, U.S.
Dam type
Earth
Dam type
Other
Purpose
Unknown
Foundation type
Unknown
Core type
Ownership Share
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Woodbury CO SWCD
Owner
Local government

MC Donald Subwatershed Site 1 Dam is owned by the local government.

Construction Share
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1985
Completed
USDA NRCS
Dam designer
Tr-Little Sioux River
River built on
MC Donald Subwatershed Site 1 Dam was built in 1985.
Metrics Share
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Summary
Dam length 354 feet
Dam height 35 feet
Max storage 220 acre feet
Normal storage 107 acre feet
Surface area 12 acres
Drainage area 1 square miles
354 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
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.

220 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.

107 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.

12 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.

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Also known as Mcdonald SWS
Former name 0
Latitude 42
Longitude -95
NID ID (National ID) IA01282

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