FGD Effluent #4 Dam is an earth dam built on the DRY Gulch River and is located in HWY 189, Wyoming. It was built in 2010 for the purpose of tailings.
The dam is privately owned by Pacificorp. The dam used to be known as 13536R.
FGD Effluent #4 Dam is privately owned by Pacificorp.
|Dam length||5,550 feet|
|Dam height||62 feet|
|Structural height||63 feet|
|Hydraulic height||57 feet|
|Max storage||1,555 acre feet|
|Normal storage||1,367 acre feet|
|Surface area||39 acres|
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.
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.
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.
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.
Maximum storage is defined as the total storage space in a reservoir below the maximum attainable water surface elevation, including any surcharge 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.
Surface area, in acres, of the impoundment at its normal retention level.
Dams assigned the significant hazard potential classification are those dams where failure or mis-operation results in no probable loss of human life but can cause economic loss, environment damage, disruption of lifeline facilities, or impact other concerns. Significant hazard potential classification dams are often located in predominantly rural or agricultural areas but could be located in areas with population and significant infrastructure.
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.
Inspections are every 5 years.
|Distance to nearest town (miles)||2|
|NID ID (National ID)||WY02580|