Coulter 14-3 Reservoir Report
Nearby: Camino Monkey Cowboy
Last Updated: December 12, 2025
Coulter 14-3 is a private dam located in Johnson, Wyoming, along the Lion Draw river.
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Summary
Constructed in 2004, the Earth-type dam serves multiple purposes including fire protection, stock watering, and small fish pond creation. With a maximum storage capacity of 77 acre-feet and a normal storage capacity of 45 acre-feet, the dam covers a surface area of 4.3 acres and has a drainage area of 0.14 square miles.
The dam stands at 30 feet in height with a hydraulic height of 24 feet and a structural height of 35 feet. It has a length of 326 feet and an uncontrolled spillway with a width of 10 feet. The dam is equipped with a valve outlet gate and is inspected every 5 years, with the last inspection conducted in April 2019 revealing a fair condition assessment and low hazard potential. The risk assessment for Coulter 14-3 is considered moderate, highlighting the importance of ongoing risk management measures to ensure the safety and integrity of the structure.
As a critical water resource for the area, Coulter 14-3 plays a vital role in providing essential water services for fire protection, livestock, and wildlife. With its strategic location and purposeful design, the dam serves as a key component of the local water infrastructure, contributing to the overall resilience and sustainability of the region's water resources in the face of a changing climate.
Year Completed |
2004 |
Dam Length |
326 |
Dam Height |
30 |
River Or Stream |
LION DRAW |
Primary Dam Type |
Earth |
Surface Area |
4.3 |
Hydraulic Height |
24 |
Drainage Area |
0.14 |
Nid Storage |
77 |
Structural Height |
35 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Rock, Soil |
Nid Height |
35 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Clear Creek Near Buffalo
|
18cfs |
Powder River At Sussex
|
144cfs |
Nf Powder River Below Pass Creek
|
50cfs |
Rock Creek Near Buffalo
|
70cfs |
Powder River At Arvada
|
180cfs |
Wild Horse Creek Near Arvada
|
0cfs |
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.
Coulter 14-3