Big Horn Dike C Reservoir Report
Nearby: Big Horn Dike A Big Horn Dike B
Last Updated: December 5, 2025
Big Horn Dike C, located in Beckton, Wyoming, is a privately owned earth dam built in 1964 for irrigation purposes on Cross Creek.
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Summary
The dam, with a spillway width of 40 feet, is uncontrolled and has a high hazard potential with a fair condition assessment as of August 2018. The dam is regulated and inspected by the Wyoming State Engineer's Office, ensuring its safety and compliance with state regulations.
Despite being a private structure, Big Horn Dike C is subject to state jurisdiction, permitting, inspection, and enforcement. The dam's emergency action plan (EAP) was last revised in February 2010, with a moderate risk assessment rating of 3. The dam has not been modified over the years and is associated with no other structures. The last inspection conducted on the dam was in August 2018, with an inspection frequency of every 5 years to ensure its continued safety and functionality.
With its location in Johnson County, Wyoming, Big Horn Dike C plays a crucial role in the irrigation of the surrounding area. Managed and maintained by private owners, the dam serves as a vital water resource for agricultural activities in the region. Its presence highlights the importance of proper infrastructure management and regulatory oversight in ensuring water resource sustainability and climate resilience.
Year Completed |
1964 |
River Or Stream |
CROSS CREEK |
Primary Dam Type |
Earth |
Hazard Potential |
High |
Foundations |
Soil |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
South Piney Creek At Willow Park
|
0cfs |
Shell Creek Above Shell Creek Reservoir
|
13cfs |
Rock Creek Near Buffalo
|
70cfs |
Piney Creek At Kearny
|
113cfs |
Tongue River Near Dayton
|
48cfs |
Shell Creek Near Shell
|
74cfs |
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 |
|---|---|---|
Cross Creek Campground
|
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Coffeen Park Campground
|
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Coffeen Park
|
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Big Goose Campground
|
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Ranger Creek - Tongue
|
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Little Goose Campground
|
Big Horn Dike C