Sonny's Reservoir Report
Nearby: Enlargment Of The Swiss Tibbs
Last Updated: December 11, 2025
Sonny's is a privately owned earth dam located in Campbell, Wyoming, along the Hugo Draw river.
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Summary
Built in 2006, this irrigation dam stands 29 feet tall and spans 395 feet in length, with a storage capacity of 100 acre-feet and a surface area of 7.18 acres. Despite its low hazard potential, the dam is currently assessed as being in poor condition, as of the last inspection in August 2017.
Managed by the Wyoming State regulatory agencies SEO and DEQ, Sonny's serves multiple purposes including irrigation, fire protection, stock, and small fish pond. With a maximum discharge capacity of 4412 cubic feet per second and an uncontrolled spillway width of 100 feet, the dam presents a moderate risk that necessitates regular inspections every 5 years. In the event of an emergency, the dam has one valve outlet gate for water release.
For water resource and climate enthusiasts, Sonny's represents a significant infrastructure contributing to the local agricultural landscape in Wyoming. Its condition assessment and risk evaluation highlight the importance of ongoing maintenance and monitoring to ensure the safety and functionality of this essential water resource for the community.
Year Completed |
2006 |
Dam Length |
395 |
Dam Height |
26 |
River Or Stream |
HUGO DRAW |
Primary Dam Type |
Earth |
Surface Area |
7.18 |
Hydraulic Height |
18 |
Drainage Area |
1.6 |
Nid Storage |
100 |
Structural Height |
29 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Rock, Soil |
Nid Height |
29 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Clear Creek Near Arvada
|
256cfs |
Powder River At Moorhead Mt
|
60cfs |
Wild Horse Creek Near Arvada
|
0cfs |
Powder River At Arvada
|
187cfs |
Little Powder River Ab Dry Creek
|
1cfs |
Stonepile Creek At Mouth
|
3cfs |
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.
Sonny's