Trabing Reservoir Report
Nearby: Doyen Zezas Irrigation
Last Updated: December 13, 2025
Trabing, a privately-owned irrigation structure located in Johnson, Wyoming, plays a crucial role in water resource management in the area.
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Summary
Completed in 1971, this earth dam stands at a height of 26 feet and has a storage capacity of 199 acre-feet. Its primary purpose is irrigation, but it also serves for fire protection, stock, and small fish pond purposes. The dam is situated on the Trabing Draw, with the Omaha District overseeing its operations.
Despite its low hazard potential, Trabing's condition assessment is rated as poor, with the last inspection in July 2019 highlighting areas for improvement. The dam's spillway type is uncontrolled, with a width of 40 feet, and it features a slide gate for outlet control. While the risk assessment is moderate, with a rating of 3, there are no specific risk management measures mentioned in the available data. Overall, Trabing presents an intriguing case study for water resource and climate enthusiasts, showcasing the complexities and challenges of managing irrigation infrastructure in a changing climate landscape.
Year Completed |
1971 |
Dam Length |
830 |
Dam Height |
26 |
River Or Stream |
TRABING DRAW |
Primary Dam Type |
Earth |
Surface Area |
17 |
Hydraulic Height |
21 |
Nid Storage |
199 |
Structural Height |
28 |
Outlet Gates |
Slide (sluice gate) - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
28 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Clear Creek Near Buffalo
|
30cfs |
Nf Powder River Below Pass Creek
|
50cfs |
North Fork Powder River Near Hazelton
|
3cfs |
Rock Creek Near Buffalo
|
70cfs |
Powder River At Sussex
|
144cfs |
Piney Creek At Kearny
|
113cfs |
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.
Trabing