W.R. Hamilton No. 2 Reservoir Report
Nearby: Haywire No. 1 West Side No. 4
Last Updated: December 15, 2025
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Summary
Hamilton No. 2, also known as Gilbert Lake, is a private irrigation dam located in Converse, Wyoming, near the city of ORPHA. Completed in 1917, this Earth dam stands at a height of 20 feet and has a storage capacity of 667 acre-feet, primarily used for irrigation purposes. Situated on Sage Creek, this structure serves multiple functions including fire protection, stock watering, and small fish pond management.
Despite its longstanding history, W.R. Hamilton No. 2 is currently assessed to be in poor condition, with a low hazard potential. The dam's spillway, with a width of 30 feet, is uncontrolled, presenting some risk factors that require attention. Regular inspections are conducted, with the last inspection taking place in April 2021, to ensure the safety and integrity of the structure. With a moderate risk assessment rating of 3, there is a need for continued monitoring and potentially implementing risk management measures to address any deficiencies.
Located in a picturesque setting in Wyoming, W.R. Hamilton No. 2 serves as a vital water resource for the surrounding area. As water resource and climate enthusiasts, it is important to recognize the significance of maintaining and enhancing the infrastructure to ensure the sustainable use of water for irrigation and other purposes. With proper attention and management, this historic dam can continue to play a crucial role in supporting the local community and ecosystem.
Year Completed |
1917 |
Dam Length |
2030 |
Dam Height |
20 |
River Or Stream |
SAGE CREEK |
Primary Dam Type |
Earth |
Surface Area |
82 |
Hydraulic Height |
15 |
Nid Storage |
667 |
Structural Height |
20 |
Outlet Gates |
Valve - 2 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
20 |
Seasonal Comparison
Weather Forecast
Nearby Streamflow Levels
Box Elder Creek At Boxelder
|
26cfs |
North Platte River At Orin
|
592cfs |
Deer Creek In Canyon
|
7cfs |
North Platte River Below Glendo Reservoir
|
5710cfs |
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.
W.R. Hamilton No. 2