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Post Falls Earth Dike Dam
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Post Falls Earth Dike Dam Share
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Greenacres Subdivision, Idaho
Privately owned
Built in 1990

Post Falls Earth Dike Dam is an earth dam built on the Spokane River and is located in Greenacres Subdivision, Idaho. It was built in 1990 and modified in 1995 .

The dam is privately owned by Avista Corporation.

Location
Post Falls Earth Dike Dam
Greenacres Subdivision, Idaho, U.S.
Dam type
Earth
Dam type
Other
Purpose
Unknown
Foundation type
Unknown
Core type
Ownership Share
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Avista Corporation
Owner
Private

Post Falls Earth Dike Dam is privately owned by Avista Corporation.

Construction Share
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1990
Completed
1995
Modified
Spokane River
River built on
Post Falls Earth Dike Dam was built in 1990 and modified in 1995.
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Summary
Dam length 40 feet
Dam height 16 feet
Structural height 16 feet
Hydraulic height 12 feet
Normal storage 225,000 acre feet
Surface area 48,000 acres
Drainage area 3,784 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.

16 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.

16 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.

12 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.

225,000 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.

48,000 acres
Surface area

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

3,784 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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High
Downstream potential hazard

Dams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.

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.

9/19/2017
Most recent inspection date

Inspections are every 1 ear.

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Distance to nearest town (miles) 11
Latitude 47
Longitude -116
NID ID (National ID) ID00220

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