Summary
Built in 1964, this Earth dam stands at a height of 31 feet and serves multiple purposes including fire protection, stock watering, and creating a small fish pond. With a normal storage capacity of 54 acre-feet, Lion Draw reservoir covers a surface area of 6 acres and has a drainage area of 0.
Despite its low hazard potential, Lion Dam is currently in poor condition as assessed during its last inspection in June 2018. The dam has an uncontrolled spillway with a width of 40 feet, and no outlet gates. It is regulated by the State of Wyoming through the State Engineer's Office (SEO), and undergoes regular inspections with a frequency of 5 years to ensure compliance with state regulations and enforcement.
Located within the Congressional District 00 of Wyoming, Lion Dam poses a moderate risk (3) according to its risk assessment. Despite its condition, the dam continues to provide valuable water resources for fire protection and agricultural purposes in the region. Enthusiasts interested in water resource management and climate change impacts on infrastructure will find Lion to be a significant point of interest in the state's water management efforts.
Year Completed |
1964 |
Dam Length |
259 |
Dam Height |
31 |
River Or Stream |
LION DRAW |
Primary Dam Type |
Earth |
Surface Area |
6 |
Hydraulic Height |
25 |
Nid Storage |
92 |
Structural Height |
30 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
31 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Clear Creek Near Buffalo
|
16cfs |
Rock Creek Near Buffalo
|
70cfs |
Piney Creek At Kearny
|
113cfs |
Powder River At Arvada
|
206cfs |
Wild Horse Creek Near Arvada
|
0cfs |
South Piney Creek At Willow Park
|
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.
Lion