Wolff Reservoir Report
Nearby: Boon Cms Railroad Project Section 6
Last Updated: December 15, 2025
Wolff is a privately owned Earth dam located in Campbell, Wyoming, specifically in the area of BN RR & ECHITA ROAD.
°F
°F
mph
Wind
%
Humidity
Summary
Completed in 2004, this dam serves primarily for irrigation purposes, with additional functions including fire protection, stock, and small fish pond usage. With a dam height of 30 feet and a maximum storage capacity of 43 acre-feet, Wolff spans a length of 530 feet and covers a surface area of 3.3 acres. The dam is regulated by the Wyoming State Environmental Quality and Department of Environmental Quality agencies, and is subject to regular inspections to ensure its structural integrity.
Situated on the HELIX DRAW river or stream, Wolff has a low hazard potential and is assessed to be in fair condition as of its last inspection in June 2019. The dam features an uncontrolled spillway with a width of 15 feet, and an outlet gate in the form of a single valve. Its risk assessment is moderate, with a DSAC (Dam Safety Action Classification) date yet to be assigned. Despite its private ownership, Wolff plays a crucial role in water resource management in the region, contributing to irrigation and ensuring water availability for various agricultural and environmental needs. Enthusiasts of water resources and climate will find Wolff to be an interesting case study in dam construction, maintenance, and regulation within the Wyoming landscape.
Year Completed |
2004 |
Dam Length |
530 |
Dam Height |
30 |
River Or Stream |
HELIX DRAW |
Primary Dam Type |
Earth |
Surface Area |
3.3 |
Hydraulic Height |
25 |
Drainage Area |
0.23 |
Nid Storage |
43 |
Structural Height |
31 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Rock, Soil |
Nid Height |
31 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Wild Horse Creek Near Arvada
|
0cfs |
Powder River At Arvada
|
262cfs |
Clear Creek Near Arvada
|
256cfs |
Stonepile Creek At Mouth
|
3cfs |
Donkey Creek Near Gillette
|
0cfs |
Powder River At Moorhead Mt
|
60cfs |
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.
Wolff