Rulon Reservoir Report
Nearby: Arrowhead Sr. No. 22-14a
Last Updated: December 5, 2025
Rulon is a private-owned Earth dam located in Crook, Wyoming, along the Juniper Draw river.
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Summary
Completed in 2006, this structure serves primarily as a Fish and Wildlife Pond, with additional purposes including Fire Protection, Stock, and small Fish Pond. With a height of 34 feet and a hydraulic height of 29 feet, Rulon has a storage capacity of 40 acre-feet and covers a surface area of 2.44 acres.
Despite its low hazard potential and fair condition assessment, Rulon is regulated by the Wyoming State Engineer's Office, with permitting, inspection, and enforcement all conducted by state agencies. The dam features an uncontrolled spillway and one outlet valve, ensuring controlled water release and management. The risk assessment for Rulon is moderate, highlighting the importance of ongoing monitoring and maintenance to ensure the safety and effectiveness of this critical water resource infrastructure.
Overall, Rulon represents a vital piece of water resource infrastructure in the region, providing essential habitat for fish and wildlife while also serving practical purposes such as fire protection and stock water supply. With its strategic location and design features, Rulon plays a crucial role in managing water resources in Crook County, Wyoming, and underscores the importance of sustainable dam management practices in the face of changing climate conditions.
Year Completed |
2006 |
Dam Length |
450 |
Dam Height |
34 |
River Or Stream |
JUNIPER DRAW |
Primary Dam Type |
Earth |
Surface Area |
2.44 |
Hydraulic Height |
29 |
Drainage Area |
0.05 |
Nid Storage |
40 |
Structural Height |
34 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Rock, Soil |
Nid Height |
34 |
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.
Rulon