Summary
Built in 1956, this dam serves multiple purposes including fire protection, stock, and a small fish pond. With a height of 29 feet and a hydraulic height of 24 feet, Lee Mankin has a storage capacity of 155 acre-feet, with a normal storage level of 93 acre-feet and a surface area of 11 acres.
Despite its low hazard potential, Lee Mankin is currently in poor condition as of the last inspection in June 2018. The dam is uncontrolled with a spillway width of 50 feet and no outlet gates. The surrounding area has a drainage area of 3.7 square miles, with the dam situated on the North Fork of Dead Horse Creek. It is crucial for water resource and climate enthusiasts to monitor and maintain dams like Lee Mankin to ensure their structural integrity and safety for surrounding communities.
Year Completed |
1956 |
Dam Length |
404 |
Dam Height |
29 |
River Or Stream |
NORTH FORK OF DEAD HORSE CREEK |
Primary Dam Type |
Earth |
Surface Area |
11 |
Hydraulic Height |
24 |
Drainage Area |
3.7 |
Nid Storage |
155 |
Structural Height |
29 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
29 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
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.
Lee Mankin