Summary
2 is a private irrigation dam located in Kemmerer, Wyoming, along a branch of Willow Creek. Built in 1927, this earth dam stands at a height of 26 feet with a hydraulic height of 21 feet and a length of 536 feet. The dam serves multiple purposes, including irrigation, fire protection, stock, and small fish pond management, with a storage capacity of 76 acre-feet.
Despite its historical significance, Colletti No. 2 is currently in poor condition, posing a low hazard potential but with moderate risk due to its age and maintenance issues. The last inspection in September 2018 revealed its deteriorating state, prompting concerns about its structural integrity. With only one valve outlet gate and an uncontrolled spillway, there are limited measures in place for managing potential emergencies or disasters.
As climate change continues to impact water resources and infrastructure, the conservation and maintenance of dams like Colletti No. 2 are crucial for ensuring the safety and sustainability of water supplies in the region. With proper monitoring and risk assessment, efforts can be made to address the dam's poor condition and mitigate potential hazards, ultimately safeguarding the surrounding community and environment.
Year Completed |
1927 |
Dam Length |
536 |
Dam Height |
26 |
River Or Stream |
BRANCH OF WILLOW CREEK |
Primary Dam Type |
Earth |
Surface Area |
6 |
Hydraulic Height |
21 |
Nid Storage |
76 |
Structural Height |
26 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
26 |
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.
Colletti No. 2