Big Horn Dike A Reservoir Report
Nearby: Big Horn Dike C Big Horn Dike B
Last Updated: December 5, 2025
Big Horn Dike A, also known as Dike A, is a vital earth dam located in Johnson, Wyoming, specifically in the city of Beckton along Cross Creek.
°F
°F
mph
Wind
%
Humidity
Summary
Completed in 1964, this privately owned structure serves primarily for irrigation purposes, providing crucial water resources for the surrounding area. With a dam height of 45 feet and a length of 775 feet, Big Horn Dike A has a storage capacity of 5756 acre-feet, making it a significant contributor to water management in the region.
Despite its age, Big Horn Dike A is in fair condition and has a high hazard potential, indicating the importance of regular inspections and maintenance. The dam's spillway, an uncontrolled type with a width of 40 feet, has a maximum discharge capacity of 4756 cubic feet per second. Emergency action plans have been prepared, and the structure meets regulatory guidelines, ensuring that risks are managed effectively. With its critical role in irrigation and water storage, Big Horn Dike A stands as a key asset in supporting the local ecosystem and agricultural activities in the area.
As a noteworthy feature in the water resource infrastructure of Wyoming, Big Horn Dike A serves as an essential component in the management of water resources for irrigation purposes. With its significant storage capacity, fair condition, and high hazard potential, this earth dam plays a crucial role in ensuring water availability and safety for the surrounding community. By meeting regulatory standards and having emergency preparedness measures in place, Big Horn Dike A exemplifies responsible stewardship of water resources in the region, highlighting the importance of sustainable water management practices for climate enthusiasts and water resource professionals alike.
Year Completed |
1964 |
Dam Length |
775 |
Dam Height |
45 |
River Or Stream |
CROSS CREEK |
Primary Dam Type |
Earth |
Surface Area |
179 |
Hydraulic Height |
39 |
Drainage Area |
10.9 |
Nid Storage |
5756 |
Structural Height |
45 |
Outlet Gates |
Slide (sluice gate) - 1 |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
45 |
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
|
||
Coffeen Park Campground
|
||
Coffeen Park
|
||
Big Goose Campground
|
||
Ranger Creek - Tongue
|
||
Little Goose Campground
|
Big Horn Dike A