West Reservoir Report
Nearby: Sandstone Enl. Dixon
Last Updated: December 16, 2025
West is a private dam located in Johnson, Wyoming, specifically in the city of Arvada.
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Summary
Built in 1962, this earth dam stands at a height of 31 feet and serves multiple purposes, including fire protection, stock, and a small fish pond. With a storage capacity of 59 acre-feet, West primarily draws water from the West Draw river or stream for its operations.
Despite its relatively low hazard potential and fair condition assessment, West is subject to state regulation and inspection by the Wyoming State Engineer's Office. The dam's spillway type is uncontrolled, with a width of 40 feet, and it covers a surface area of 4 acres. While it has not undergone any modifications in recent years, West remains an important structure for the local community's water resource management and protection against emergencies.
Overall, West presents a moderate risk level (rated at 3) and has a regular inspection frequency of 5 years. With Liz Cheney (R) as the Congressional representative for the area, West serves as a vital component for fire protection and water storage in the region, highlighting the intersection of water resource management and climate resilience in the arid terrain of Wyoming.
Year Completed |
1962 |
Dam Length |
300 |
Dam Height |
31 |
River Or Stream |
WEST DRAW |
Primary Dam Type |
Earth |
Surface Area |
4 |
Hydraulic Height |
26 |
Nid Storage |
59 |
Structural Height |
31 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
31 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Clear Creek Near Buffalo
|
16cfs |
Powder River At Arvada
|
206cfs |
Wild Horse Creek Near Arvada
|
0cfs |
Rock Creek Near Buffalo
|
70cfs |
Piney Creek At Kearny
|
113cfs |
South Piney Creek At Willow Park
|
0cfs |
Dam Data Reference
Condition Assessment
SatisfactoryNo existing or potential dam safety deficiencies are recognized. Acceptable performance is expected under all loading conditions (static, hydrologic, seismic) in accordance with the minimum applicable state or federal regulatory criteria or tolerable risk guidelines.
Fair
No existing dam safety deficiencies are recognized for normal operating conditions. Rare or extreme hydrologic and/or seismic events may result in a dam safety deficiency. Risk may be in the range to take further action. Note: Rare or extreme event is defined by the regulatory agency based on their minimum
Poor A dam safety deficiency is recognized for normal operating conditions which may realistically occur. Remedial action is necessary. POOR may also be used when uncertainties exist as to critical analysis parameters which identify a potential dam safety deficiency. Investigations and studies are necessary.
Unsatisfactory
A dam safety deficiency is recognized that requires immediate or emergency remedial action for problem resolution.
Not Rated
The dam has not been inspected, is not under state or federal jurisdiction, or has been inspected but, for whatever reason, has not been rated.
Not Available
Dams for which the condition assessment is restricted to approved government users.
Hazard Potential Classification
HighDams assigned the high hazard potential classification are those where failure or mis-operation will probably cause loss of human life.
Significant
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 in areas with population and significant infrastructure.
Low
Dams assigned the low hazard potential classification are those where failure or mis-operation results in no probable loss of human life and low economic and/or environmental losses. Losses are principally limited to the owner's property.
Undetermined
Dams for which a downstream hazard potential has not been designated or is not provided.
Not Available
Dams for which the downstream hazard potential is restricted to approved government users.
West