Thelma #1 is a privately owned Earth dam located in Emigrant, Montana, along the TR-Yellowstone River.
Wind
Humidity
Designed by the USDA NRCS and completed in 1962, this dam primarily serves the purpose of irrigation and has a storage capacity of 106 acre-feet. With a low hazard potential and a height of 19 feet, Thelma #1 plays a crucial role in water resource management in the area.
Managed by the DNRC and regulated by the state of Montana, Thelma #1 is subject to regular inspections and enforcement to ensure its safety and functionality. Although its condition is currently not rated, the dam has not undergone any modifications and continues to operate within its design parameters. With a maximum discharge of 120 cubic feet per second, Thelma #1 remains a vital piece of infrastructure for the surrounding agricultural community.
As a key component of the irrigation system in Park County, Thelma #1 provides essential water resources for local farmers and ranchers. Its location along the Yellowstone River and its storage capacity make it a valuable asset for mitigating drought and ensuring a reliable water supply for the region. Climate and water resource enthusiasts can appreciate the role that Thelma #1 plays in sustainable water management practices in Montana.
Year Completed |
1962 |
Dam Length |
211 |
Dam Height |
19 |
River Or Stream |
TR-YELLOWSTONE RIVER |
Primary Dam Type |
Earth |
Hydraulic Height |
19 |
Nid Storage |
106 |
Hazard Potential |
Low |
Nid Height |
19 |
| Location | Reservations | Toilets |
|---|---|---|
Dailey Lake - FAS
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Carbella
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Canyon
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Sunny Brook Springs FAS
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Big Creek Cabin
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Windy Pass Cabin
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