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Units 1 and 2 Ash and Clear Water Dam
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Units 1 and 2 Ash and Clear Water Dam Share
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HWY. 189, Wyoming
Public utility owned
Built in 1994

Units 1 and 2 Ash and Clear Water Dam is an earth dam built on the Hams Fork-Offstream River and is located in HWY. 189, Wyoming. It was built in 1994 .

The dam is owned by the public utility, Pacificorp, Naughton Power Plant. It is also known as Refiling 9418R Ash Pond No.1.

Location
Units 1 and 2 Ash and Clear Water Dam
HWY. 189, Wyoming, U.S.
Dam type
Earth
Dam type
Other
Purpose
Unknown
Foundation type
Unknown
Core type
Ownership Share
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Pacificorp, Naughton Power Plant
Owner
Public utility

Units 1 and 2 Ash and Clear Water Dam is owned by the public utility, Pacificorp, Naughton Power Plant.

Construction Share
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1994
Completed
Gary Van Riessen
Dam designer
Hams Fork-Offstream River
River built on
Units 1 and 2 Ash and Clear Water Dam was built in 1994.
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Summary
Dam length 6,100 feet
Dam height 71 feet
Structural height 88 feet
Hydraulic height 71 feet
Normal storage 4,057 acre feet
Surface area 206 acres
6,100 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.

71 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.

88 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.

71 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.

4,057 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.

206 acres
Surface area

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

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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.

8/25/2014
Most recent inspection date

Inspections are every 5 years.

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Also known as Refiling 9418R Ash Pond No.1
Distance to nearest town (miles) 2
Latitude 41
Longitude -110
NID ID (National ID) WY01546

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