York Fs 9-118-4 Reservoir Report
Nearby: Thunder Basin No. 95 Hauber 9-108-1
Last Updated: December 5, 2025
York Fs 9-118-4, also known as 118w03, is a federal water resource located in Campbell, Wyoming, near Biddle, MT.
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Summary
This dam, completed in 1973, serves multiple purposes including fire protection, stock watering, and serving as a small fish pond. It has a height of 22 feet and a storage capacity of 28 acre-feet, with a normal storage level of 21 acre-feet. The dam is primarily of earth construction with a buttress core and soil foundation, providing a surface area of 3 acres and a drainage area of 1 square mile.
Despite its low hazard potential, York Fs 9-118-4 has a moderate risk assessment rating of 3 and has not been rated for its condition assessment. The dam's spillway is uncontrolled with a width of 10 feet, and it has a maximum discharge capacity of 164 cubic feet per second. The last inspection of the dam was conducted in May 2011, with an inspection frequency of 10 years. The dam is managed and regulated by the Forest Service, with no associated locks or outlet gates.
Overall, York Fs 9-118-4 is a vital water resource in the region, providing essential services for fire protection, stock watering, and recreational purposes. Its moderate risk level highlights the importance of regular maintenance and monitoring to ensure the safety and effectiveness of the dam for both water resource and climate enthusiasts in the area.
Year Completed |
1973 |
Dam Length |
242 |
Dam Height |
22 |
River Or Stream |
THOMPSON DRAW |
Primary Dam Type |
Earth |
Surface Area |
3 |
Hydraulic Height |
17 |
Drainage Area |
1 |
Nid Storage |
28 |
Structural Height |
27 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
27 |
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.
York Fs 9-118-4