Dresher Reservoir Report
Nearby: Shearing Pen Jordan No. 9
Last Updated: December 8, 2025
Dresher, located in Arvada, Wyoming, is a privately owned dam with a primary purpose of providing fire protection, stock watering, and serving as a small fish pond.
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Summary
Completed in 1940, this earth dam stands at a height of 25 feet with a hydraulic height of 20 feet and a structural height of 25 feet. It has a storage capacity of 42 acre-feet, with a normal storage level of 23 acre-feet and a surface area of 3 acres. The dam, situated on the Rector Draw river, is regulated by the state of Wyoming and is subject to regular inspections to ensure its integrity.
Despite being classified as having a low hazard potential, Dresher is rated as having a fair condition following its last inspection in August 2018. The dam has an uncontrolled spillway with a width of 200 feet and no outlet gates. The risk assessment for Dresher is moderate, with a DSAC assigned date currently unavailable. While the dam is not operated by the US Army Corps of Engineers, it is subject to state permitting, inspection, and enforcement, ensuring compliance with safety regulations and mitigating potential risks to downstream communities.
Overall, Dresher serves as a vital resource for the local area, providing essential services such as fire protection and stock watering. With its moderate risk assessment and fair condition, ongoing monitoring and maintenance are crucial to ensure the safety and integrity of this important water resource. As climate change continues to impact water resources, it is essential for enthusiasts and stakeholders to remain vigilant in managing and protecting dams like Dresher to sustainably meet the needs of the surrounding communities.
Year Completed |
1940 |
Dam Length |
204 |
Dam Height |
25 |
River Or Stream |
RECTOR DRAW |
Primary Dam Type |
Earth |
Surface Area |
3 |
Hydraulic Height |
20 |
Nid Storage |
42 |
Structural Height |
25 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
25 |
Seasonal Comparison
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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.
Dresher