Green Cabin No. 3 Reservoir Report
Nearby: Green Cabin Henry
Last Updated: December 5, 2025
Green Cabin No.
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Summary
3, nestled in the picturesque Sheridan, Wyoming, is a privately-owned earth dam with a primary purpose of fire protection, stock, or a small fish pond. Built in 1969, this dam stands at 31 feet tall with a hydraulic height of 22 feet and a structural height of 31 feet, providing a storage capacity of 75 acre-feet. The dam spans 250 feet in length and covers a surface area of 3 acres, serving as a vital resource for the surrounding area.
Despite its low hazard potential and fair condition assessment, Green Cabin No. 3 undergoes regular inspections, with the last one conducted in July 2017. Its uncontrolled spillway, with a width of 35 feet, ensures proper water discharge during periods of excess flow. This dam plays a crucial role in mitigating the risk of flooding and provides essential water resources for fire protection, livestock, and small-scale fisheries in the region.
Located in the Green Cabin Draw and managed by the private owner in Clearmont, Wyoming, Green Cabin No. 3 stands as a testament to sustainable water resource management and the intersection of infrastructure with environmental conservation. Its significance lies not only in its functional purposes but also in its contribution to the local ecosystem and climate resilience efforts in the area.
Year Completed |
1969 |
Dam Length |
250 |
Dam Height |
27 |
River Or Stream |
GREEN CABIN DRAW |
Primary Dam Type |
Earth |
Surface Area |
3 |
Hydraulic Height |
22 |
Nid Storage |
75 |
Structural Height |
31 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
31 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Powder River At Arvada
|
156cfs |
Wild Horse Creek Near Arvada
|
0cfs |
Piney Creek At Kearny
|
113cfs |
Clear Creek Near Buffalo
|
12cfs |
Rock Creek Near Buffalo
|
70cfs |
Clear Creek Near Arvada
|
256cfs |
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.
Green Cabin No. 3