Geier Irrigation Reservoir Reservoir Report
Last Updated: December 5, 2025
Geier Irrigation Reservoir, located in Weston County, Wyoming, is a privately owned Earth dam that serves primarily for irrigation purposes.
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Summary
Constructed in 2008, this reservoir has a maximum storage capacity of 587 acre-feet and a surface area of 32.3 acres. With a low hazard potential and fair condition assessment, the dam stands at a height of 38 feet, with a hydraulic height of 34 feet, and a structural height of 42 feet.
Managed by the Natural Resources Conservation Service, the Geier Irrigation Reservoir plays a crucial role in water resource management in the region. With a drainage area of 0.58 square miles and a maximum discharge capacity of 1478 cubic feet per second, the reservoir ensures a reliable water supply for agricultural activities in the area. The dam features an uncontrolled spillway and a single outlet valve for water management.
Despite its modest size, the Geier Irrigation Reservoir stands as a vital infrastructure for sustainable water use in the region. With state regulation and inspection in place, the reservoir provides a lifeline for local farmers and contributes to the overall water resource management efforts in Wyoming. Its strategic location and design make it an essential component of the local water infrastructure, ensuring a steady and reliable water supply for irrigation purposes.
Year Completed |
2008 |
Dam Length |
885 |
Dam Height |
38 |
River Or Stream |
OIL FIELD DRAW OFFSTREAM |
Primary Dam Type |
Earth |
Surface Area |
32.3 |
Hydraulic Height |
34 |
Drainage Area |
0.58 |
Nid Storage |
587 |
Structural Height |
42 |
Outlet Gates |
Valve - 1 |
Hazard Potential |
Low |
Foundations |
Rock, Soil |
Nid Height |
42 |
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.
Geier Irrigation Reservoir