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Louisa Reservoir Dam
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Louisa Reservoir Dam Share
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Overview Share
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Triangle, Idaho
Irrigation
State owned

Louisa Reservoir Dam is an arch dam built on the Louisa Creek River and is located in Triangle, Idaho. It was built for the purpose of irrigation.

The state-owned dam is owned by the Idwr.

Location
Louisa Reservoir Dam
Triangle, Idaho, U.S.
Dam type
Arch
Dam type
Irrigation
Purpose
Unknown
Foundation type
Earth
Core type
Ownership Share
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Idwr
Owner
State

The state-owned dam is owned by the Idwr.

Metrics Share
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Summary
Dam length 40 feet
Dam height 41 feet
Structural height 41 feet
Hydraulic height 41 feet
Max discharge 478 cubic feet per second
Normal storage 175 acre feet
Surface area 175 acres
Drainage area 8 square miles
40 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.

41 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.

41 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.

41 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.

478 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.

175 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.

175 acres
Surface area

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

8 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.

11/16/2017
Most recent inspection date

Inspections are every 5 years.

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Distance to nearest town (miles) 2
Latitude 42
Longitude -116
NID ID (National ID) ID00095

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