Summary
Completed in 1966, this irrigation dam stands at 80 feet in height, with a hydraulic height of 74 feet and a length of 570 feet. It has a storage capacity of 5003 acre-feet, serving the purpose of irrigation for the surrounding area.
Despite being privately owned, Dull Knife is regulated by the State of Wyoming, with inspections and enforcement measures in place to ensure its safety and functionality. The dam has a high hazard potential and a fair condition assessment, with a moderate risk rating. The last inspection was conducted in June 2017, with a recommended inspection frequency of 5 years to monitor any changes in its condition.
With its critical role in providing irrigation water to the region, Dull Knife serves as a vital water resource infrastructure in Wyoming. Climate and water resource enthusiasts can appreciate the engineering feat behind this dam, as well as the ongoing efforts to maintain its safety and functionality for the benefit of the local community and agriculture sector.
Year Completed |
1966 |
Dam Length |
570 |
Dam Height |
80 |
River Or Stream |
NORTH FORK POWDER RIVER |
Primary Dam Type |
Earth |
Surface Area |
130 |
Hydraulic Height |
74 |
Drainage Area |
25.9 |
Nid Storage |
5003 |
Structural Height |
80 |
Outlet Gates |
None |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
80 |
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.
Area Campgrounds
| Location | Reservations | Toilets |
|---|---|---|
Doyle
|
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Doyle Campground
|
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Lower Doyle Creek Campground
|
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Lost Cabin Campground
|
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Lost Cabin
|
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Muddy Guard Cabin
|
Dull Knife
North Fork Powder River