Schlemmer #1 Reservoir Report
Nearby: Lester #1 Langstaff #1
Last Updated: December 5, 2025
Schlemmer #1 is a private irrigation dam located in Carbon County, Montana, near the city of Edgar.
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Summary
Completed in 1950, this earth dam stands at 14 feet tall and spans 400 feet in length, with a storage capacity of 81 acre-feet. Situated on the TR-Yellowstone River, this structure is regulated by the Montana Department of Natural Resources and Conservation (DNRC) and is inspected, permitted, and enforced by state authorities.
With a low hazard potential and a current condition assessment of "Not Rated," Schlemmer #1 serves as a crucial water resource for irrigation purposes in the surrounding area. Owned privately, this dam plays a significant role in managing water flow and storage for agricultural needs. Despite its age, the dam continues to operate effectively, meeting state regulations and providing vital water resources for the community.
Located within Congressional District 00 of Montana, Schlemmer #1 is overseen by the Omaha District of the US Army Corps of Engineers. As a key infrastructure for water management in the region, this dam contributes to the sustainable use of water resources and highlights the importance of maintaining and regulating such structures to ensure the resilience of water systems in the face of climate change challenges.
Year Completed |
1950 |
Dam Length |
400 |
Dam Height |
14 |
River Or Stream |
TR-YELLOWSTONE RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
14 |
Nid Storage |
81 |
Hazard Potential |
Low |
Nid Height |
14 |
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.
Schlemmer #1