Calpet Cell #8 Reservoir Report
Nearby: Calpet Cell #7 Calpet Cell #9
Last Updated: December 13, 2025
Calpet Cell #8, located in Sublette, Wyoming, along Dry Pine Creek, is a privately owned earth dam constructed in 2006 with a height of 28 feet and a storage capacity of 265 acre-feet.
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Summary
Designed by Gareth Powell, this dam serves a primary purpose that falls under the "Other" category, with a fair condition assessment and low hazard potential. The dam spans 3400 feet in length and covers a surface area of 15.4 acres, making it a significant water resource structure in the area.
Despite being a low hazard potential dam, Calpet Cell #8 is regulated by the State of Wyoming, with regular inspections conducted to ensure its structural integrity and safety. The dam does not have a spillway or outlet gates and has not been modified since its completion. It is situated in a picturesque location along Highway 189, offering a striking contrast between the man-made structure and the natural beauty of the surrounding landscape. With Liz Cheney as the Congressional representative for the area, Calpet Cell #8 is a vital component of the local water resource infrastructure, contributing to water management and conservation efforts in the region.
Enthusiasts of water resources and climate will find Calpet Cell #8 to be a fascinating case study in dam construction and management. Its design, construction, and regulatory framework provide valuable insights into the complexities of water resource management in Wyoming. As climate change continues to impact water availability and quality, structures like Calpet Cell #8 play a crucial role in ensuring sustainable water use for both human communities and the local ecosystem. By understanding the intricacies of dams like Calpet Cell #8, enthusiasts can appreciate the delicate balance between human needs and environmental conservation in water resource management.
Year Completed |
2006 |
Dam Length |
3400 |
Dam Height |
28 |
River Or Stream |
DRY PINE CREEK |
Primary Dam Type |
Earth |
Surface Area |
15.4 |
Hydraulic Height |
28 |
Nid Storage |
265 |
Structural Height |
28 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Rock, Soil |
Nid Height |
28 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Green River Near La Barge
|
681cfs |
New Fork River Near Big Piney
|
295cfs |
Fontenelle C Nr Herschler Ranch
|
33cfs |
Green River Below Fontenelle Reservoir
|
882cfs |
Hams Fork Below Pole Creek
|
6cfs |
Smiths Fork Near Border
|
68cfs |
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.
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