Summary
Built in 1922, this earth dam stands at a height of 16 feet and has a storage capacity of 351 acre-feet. Despite its low hazard potential, Hansen's condition assessment is rated as poor, indicating a need for maintenance and improvement to ensure its long-term functionality.
The dam features an uncontrolled spillway and a single valve outlet gate. Its primary purpose is irrigation, serving the local agricultural community for water supply. Although the structure is regulated and inspected by the Wyoming State Engineer's Office, its last inspection in September 2020 revealed a poor condition, highlighting the importance of ongoing monitoring and maintenance to mitigate risks and ensure the safety of downstream communities.
With a moderate risk assessment score of 3, Hansen presents a manageable but not negligible level of risk. It is essential for stakeholders and regulators to prioritize necessary repairs and upgrades to improve the dam's overall condition and resilience to changing climate conditions. By addressing the identified deficiencies and implementing risk management measures, Hansen can continue to support water resource management in the region effectively.
Year Completed |
1922 |
Dam Length |
1050 |
Dam Height |
16 |
River Or Stream |
FILLMORE CREEK |
Primary Dam Type |
Earth |
Surface Area |
45 |
Hydraulic Height |
14 |
Nid Storage |
351 |
Structural Height |
16 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
16 |
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.
Hansen
Muddy Creek