Jack Pot Reservoir Report
Last Updated: December 13, 2025
Jack Pot is a privately owned Earth dam located in Natrona, Wyoming, along the Alkali Fork Badwater Creek.
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Summary
Completed in 1915, this dam stands at a height of 45 feet and has a hydraulic height of 23 feet, with a length of 2300 feet. The dam has a storage capacity of 1029 acre-feet, with a normal storage of 772 acre-feet and a surface area of 98 acres.
Despite its low hazard potential, Jack Pot is in poor condition as of its last inspection in August 2018. The dam has an uncontrolled spillway with a width of 100 feet and one valve outlet gate. The risk assessment for this structure is moderate (3), and while there are no inundation maps or emergency action plans prepared, the dam is inspected every 5 years to ensure its safety.
Located in a picturesque setting in Lysite, Wyoming, Jack Pot serves as a vital water resource for the area. Climate and water resource enthusiasts will be intrigued by the history and engineering of this dam, as well as the ongoing efforts to manage and maintain its integrity in the face of changing environmental conditions.
Year Completed |
1915 |
Dam Length |
2300 |
Dam Height |
45 |
River Or Stream |
ALKALI FORK BADWATER CREEK |
Primary Dam Type |
Earth |
Surface Area |
98 |
Hydraulic Height |
23 |
Nid Storage |
1029 |
Structural Height |
45 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
45 |
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.
Jack Pot
E-K Creek
Badwater Creek