Bench Canal Reservoir Report
Nearby: Phipps No. 1 Delbert Jones
Last Updated: December 5, 2025
Bench Canal in Wyoming is a privately-owned irrigation structure constructed in 1969 along the Greybull River.
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Summary
This Earth-type dam stands at a height of 35 feet and has a storage capacity of 497 acre-feet, with a normal storage level of 299 acre-feet. The canal serves the primary purpose of irrigation and spans 1000 feet in length, covering a surface area of 34 acres.
Despite being uncontrolled, Bench Canal has a low hazard potential and is deemed to be in fair condition as of the last inspection in 2017. The structure is regulated by the State of Wyoming, with inspection, enforcement, and permitting processes in place to ensure its safe operation. The risk assessment for Bench Canal indicates a moderate risk level, highlighting the importance of ongoing monitoring and maintenance to mitigate any potential hazards.
Located in Big Horn County, Wyoming, Bench Canal plays a vital role in supporting agricultural activities in the region. Maintaining the integrity of this canal is crucial for water resource management and climate resilience in the area, making it a focal point for water resource and climate enthusiasts interested in sustainable infrastructure development.
Year Completed |
1969 |
Dam Length |
1000 |
Dam Height |
35 |
River Or Stream |
GREYBULL RIVER |
Primary Dam Type |
Earth |
Surface Area |
34 |
Hydraulic Height |
30 |
Drainage Area |
1 |
Nid Storage |
497 |
Structural Height |
35 |
Outlet Gates |
Uncontrolled - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
35 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Bighorn River At Basin
|
996cfs |
Bighorn River At Kane
|
1340cfs |
Shoshone River Near Lovell
|
460cfs |
Shell Creek Near Shell
|
74cfs |
Greybull River At Meeteetse
|
338cfs |
Bighorn R At Worland Wyo
|
4350cfs |
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.
Bench Canal