Schessler #10 Reservoir Report
Last Updated: December 6, 2025
Schessler #10 is a privately owned earth dam located in Rosebud County, Montana, along the TR-East Fork Little Porcupine river.
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Summary
Built in 1967 by the USDA NRCS, the dam serves the primary purposes of fire protection, stock maintenance, and a small fish pond. With a height of 18 feet and a length of 550 feet, the dam has a storage capacity of 60 acre-feet and a drainage area of 0.94 square miles. The dam has a low hazard potential and a moderate risk assessment rating.
Despite being privately owned, Schessler #10 is regulated by the state of Montana, with permitting, inspection, and enforcement responsibilities falling under the jurisdiction of the DNRC. The dam features an uncontrolled spillway with a width of 100 feet, capable of handling a maximum discharge of 700 cubic feet per second. The condition of the dam is currently rated as "Not Rated," with no recent inspection data available. While the dam poses a moderate risk, there are no specific risk management measures or emergency action plans in place as of now. Overall, Schessler #10 stands as a vital structure for water resource management and climate resilience in the region.
Year Completed |
1967 |
Dam Length |
550 |
Dam Height |
18 |
River Or Stream |
TR-EAST FORK LITTLE PORCUPINE |
Primary Dam Type |
Earth |
Hydraulic Height |
18 |
Drainage Area |
0.94 |
Nid Storage |
60 |
Hazard Potential |
Low |
Nid Height |
18 |
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.
Schessler #10