22 - 36 Reservoir Report
Nearby: Raper Draw Sand Draw
Last Updated: December 16, 2025
22 - 36 is a private earth dam located in Johnson, Wyoming, with a primary purpose of irrigation.
°F
°F
mph
Wind
%
Humidity
Summary
Completed in 2003, this dam stands at a height of 90 feet and has a storage capacity of 290 acre-feet, serving various purposes including fire protection, stock, fish and wildlife pond, and irrigation. The dam spans 573 feet in length and covers a surface area of 9.59 acres, with a maximum discharge rate of 1950 cubic feet per second.
Owned privately, 22 - 36 is regulated by the State of Wyoming and is subject to regular inspections, with the last assessment conducted in June 2018, resulting in a fair condition assessment and a low hazard potential. The dam features an uncontrolled spillway with a width of 50 feet and a single outlet valve. Despite its moderate risk assessment, the dam has not undergone any modifications and lacks detailed risk management measures, highlighting the need for continued monitoring and maintenance to ensure its safety and functionality for water resource and climate enthusiasts in the region.
Year Completed |
2003 |
Dam Length |
573 |
Dam Height |
90 |
River Or Stream |
FAWN DRAW |
Primary Dam Type |
Earth |
Surface Area |
9.59 |
Hydraulic Height |
84 |
Drainage Area |
0.05 |
Nid Storage |
290 |
Structural Height |
95 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Rock, Soil |
Nid Height |
95 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Powder River At Arvada
|
206cfs |
Wild Horse Creek Near Arvada
|
0cfs |
Clear Creek Near Buffalo
|
16cfs |
Piney Creek At Kearny
|
113cfs |
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.
22 - 36