Morton No. F.S. 9-231-39 Reservoir Report
Last Updated: December 8, 2025
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Summary
F.S. 9-231-39, located in Converse, Wyoming, is a Federal-owned Earth dam constructed in 1972 for the primary purpose of creating a Fish and Wildlife Pond along the Pirate Draw river. With a height of 22 feet and a hydraulic height of 17 feet, the dam has a storage capacity of 63 acre-feet and a surface area of 7 acres. Despite its low hazard potential, the dam's condition assessment is rated as poor, highlighting the need for maintenance and potential upgrades to ensure its long-term stability.
The dam features an uncontrolled spillway with a width of 30 feet and an outlet gate system for water release. The last inspection conducted in May 2020 revealed the dam's poor condition, prompting a moderate risk assessment rating of 3. While the hazard potential is low, the risk management measures and emergency action plan for the dam are not currently detailed, raising concerns about its preparedness in case of an emergency. Given its importance for fish and wildlife habitats, further attention and resources may be required to address the dam's structural deficiencies and ensure its continued functionality and safety.
As a critical component of the local ecosystem, the Morton No. F.S. 9-231-39 dam serves as a vital resource for wildlife and water management in the area. With its historical significance and environmental impact, efforts to improve its condition and overall risk management are essential to safeguarding the surrounding community and ecosystem. By addressing the dam's poor condition and implementing necessary upgrades, stakeholders can protect the dam's integrity and ensure its continued contribution to the region's water resource and climate resilience efforts.
Year Completed |
1972 |
Dam Length |
444 |
Dam Height |
22 |
River Or Stream |
PIRATE DRAW |
Primary Dam Type |
Earth |
Surface Area |
7 |
Hydraulic Height |
17 |
Drainage Area |
0.2 |
Nid Storage |
63 |
Structural Height |
22 |
Outlet Gates |
Uncontrolled - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
22 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
Morton No. F.S. 9-231-39