Summary
2 is a privately owned Earth dam located in Wyoming, specifically in Johnson County near the city of Arvada. Built in 1969 for irrigation purposes, this dam stands at a height of 25 feet with a hydraulic height of 20 feet. It has a storage capacity of 104 acre-feet and covers a surface area of 9 acres, drawing water from the Ethyl Draw stream.
Despite being classified as having a low hazard potential and fair condition assessment, Ethyl No. 2 is subject to regular inspections, with the last one conducted in August 2020. The dam has an uncontrolled spillway with a width of 35 feet and no outlet gates. With a moderate risk assessment rating of 3, the dam is deemed to have some potential vulnerabilities that need to be managed effectively to ensure its continued safe operation and minimize any risks to surrounding areas.
Ethyl No. 2 is a crucial piece of infrastructure in the region, providing essential water resources for irrigation purposes. Its location near the Ethyl Draw stream highlights the importance of maintaining and monitoring this dam to ensure its stability and prevent any potential hazards. Climate and water resource enthusiasts will find this dam's data and risk assessment intriguing, as it sheds light on the complex relationship between infrastructure, natural resources, and climate resilience in the area.
Year Completed |
1969 |
Dam Length |
460 |
Dam Height |
25 |
River Or Stream |
ETHYL DRAW |
Primary Dam Type |
Earth |
Surface Area |
9 |
Hydraulic Height |
20 |
Nid Storage |
104 |
Structural Height |
25 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
25 |
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.
Ethyl No. 2
Powder River (Cantonment Reno)