Thunder Basin No. 95 Reservoir Report
Nearby: Snyder Homestead York Fs 9-118-4
Last Updated: December 26, 2025
Thunder Basin No.
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Summary
95, located in Biddle, Wyoming, is a federal dam constructed in 1937 by the USDA Forest Service. This dam serves multiple purposes, including fire protection, stock watering, and creating a small fish pond. With a height of 23 feet and a length of 255 feet, Thunder Basin No. 95 has a storage capacity of 24 acre-feet and covers an area of 3 acres. The dam is situated on the Gleason Draw river and is designed as an earth dam with a buttress core and soil foundation.
Despite being classified as having a low hazard potential, Thunder Basin No. 95 is considered to have a moderate risk level. The dam has not been inspected since May 2011, with an inspection frequency of 10 years. It is important for water resource and climate enthusiasts to monitor the condition of this dam and ensure that appropriate risk management measures are in place to mitigate any potential hazards. Additionally, the dam lacks an Emergency Action Plan (EAP) and inundation maps, highlighting the need for proactive safety protocols to be established.
Given its location in Campbell County, Wyoming, Thunder Basin No. 95 is a crucial infrastructure for water resource management in the region. As a federal-owned structure, the dam plays a vital role in supporting the local ecosystem, recreational activities, and wildlife habitats. Climate change and variability may pose additional challenges to the stability and resilience of the dam, making it essential for stakeholders to prioritize regular inspections, maintenance, and risk assessment to safeguard this important water resource for future generations.
Year Completed |
1937 |
Dam Length |
255 |
Dam Height |
23 |
River Or Stream |
GLEASON DRAW |
Primary Dam Type |
Earth |
Surface Area |
3 |
Hydraulic Height |
23 |
Drainage Area |
1 |
Nid Storage |
24 |
Structural Height |
28 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
28 |
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.
Thunder Basin No. 95