Amerada Stock Reservoir Report
Nearby: Haines Stock Taylor No. 1
Last Updated: December 14, 2025
Amerada Stock, located in Johnson, Wyoming, is a privately owned earthen dam built in 1969 for fire protection, stock, and small fish pond purposes.
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Summary
The dam stands at 25 feet high with a storage capacity of 262 acre-feet and a surface area of 18 acres. It is primarily regulated by the Wyoming State Engineer's Office and undergoes regular inspections, with the last assessment in June 2017 rating its condition as fair and its hazard potential as low.
Situated on Nine Mile Creek, Amerada Stock serves as a crucial water resource for the surrounding area, providing necessary water for fire protection and livestock. Despite its low hazard potential, the dam's risk assessment is rated as moderate, indicating a need for ongoing monitoring and risk management measures to ensure its continued safety and functionality. With its strategic location and importance for water storage, Amerada Stock plays a vital role in the local ecosystem and agriculture industry.
For water resource and climate enthusiasts, Amerada Stock presents an intriguing case study of a privately owned dam in Wyoming that serves multiple purposes while facing moderate risks. Its location on Nine Mile Creek and its storage capacity make it a valuable asset for the community, highlighting the importance of proper maintenance and monitoring to ensure its long-term viability in the face of changing environmental conditions and potential hazards.
Year Completed |
1969 |
Dam Length |
566 |
Dam Height |
25 |
River Or Stream |
NINE MILE CREEK |
Primary Dam Type |
Earth |
Surface Area |
18 |
Hydraulic Height |
20 |
Nid Storage |
262 |
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.
Amerada Stock