Summary
Constructed in 1953, this earth dam stands at 19 feet high and spans 620 feet in length. With a storage capacity of 140 acre-feet and a normal storage level of 88 acre-feet, it serves as a crucial water resource for the surrounding area.
Despite its low hazard potential, Coal Bank is in poor condition as of the last inspection in 2017. The dam features an uncontrolled spillway with a width of 30 feet and two slide gates for outlet control. While it poses a moderate risk, the dam is subject to state regulation, inspection, and enforcement to ensure its integrity and safety.
As a key infrastructure for water management in the region, Coal Bank faces the challenge of maintaining its structural integrity and functionality. With proper risk management measures and regular inspections, this dam can continue to support irrigation needs while mitigating potential hazards to the environment and surrounding communities.
Year Completed |
1953 |
Dam Length |
620 |
Dam Height |
19 |
River Or Stream |
COAL BANK CREEK |
Primary Dam Type |
Earth |
Surface Area |
15 |
Hydraulic Height |
14 |
Nid Storage |
140 |
Structural Height |
19 |
Outlet Gates |
Slide (sluice gate) - 2 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
19 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Rock Creek Ab King Canyon Canal
|
12cfs |
Laramie River Near Bosler
|
1950cfs |
L Medicine Bow R At Boles Spring
|
3cfs |
Little Laramie River Near Filmore
|
671cfs |
Laramie River At Laramie
|
48cfs |
Pass Creek Near Elk Mountain
|
149cfs |
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.
Coal Bank