Powell Sewage Lagoon System-Secondary C2 Reservoir Report
Last Updated: December 5, 2025
The Powell Sewage Lagoon System-Secondary C2 is a vital water resource infrastructure owned and operated by the Local Government in Park, Wyoming.
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Summary
Designed by Donald J. Livingston and completed in 1988, this Earth dam structure serves the purpose of wastewater management, with a storage capacity of 69 acre-feet and a surface area of 80 acres. Located in the drainage of Bitter Creek, this lagoon system plays a crucial role in maintaining water quality in the region.
Despite being classified as a low hazard potential structure with fair condition assessment, the Powell Sewage Lagoon System-Secondary C2 is subject to state regulation, inspection, and enforcement by the State of Wyoming regulatory agency. With 12 controlled outlet gates and no spillway, this dam stands at a height of 11 feet and has a hydraulic height of 8 feet. The risk assessment for this structure is rated as high (2), indicating the importance of ongoing monitoring and management to ensure its continued safe operation.
In the event of emergencies, it is essential that the EAP (Emergency Action Plan) for the Powell Sewage Lagoon System-Secondary C2 is up to date and meets established guidelines. Regular inspections are conducted, with the last assessment taking place on May 11, 2021, and a frequency of every 5 years. With Liz Cheney (R) representing the Congressional District of Wyoming where this structure is located, collaboration and coordination with relevant authorities are crucial for effective risk management and response strategies related to this essential water resource facility.
Year Completed |
1988 |
Dam Length |
4000 |
Dam Height |
11 |
River Or Stream |
DRAINAGE OF BITTER CREEK |
Primary Dam Type |
Earth |
Surface Area |
80 |
Hydraulic Height |
8 |
Nid Storage |
69 |
Structural Height |
11 |
Outlet Gates |
Other Controlled - 12 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
11 |
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.
Powell Sewage Lagoon System-Secondary C2