Overnight Reservoir, located in Beaverhead, Montana, is a privately owned irrigation reservoir completed in 1920.
Wind
Humidity
With a dam height of 17 feet and a storage capacity of 88 acre-feet, this earth dam serves the primary purpose of providing water for irrigation in the region. Situated along the TR-CAVE GULCH river or stream, this reservoir plays a crucial role in supporting agricultural activities in the area.
Managed by the Montana Department of Natural Resources and Conservation (DNRC), Overnight Reservoir has a low hazard potential and is currently rated as "Not Rated" in terms of condition assessment. Although details on inspection frequency and emergency preparedness are not provided, the reservoir remains a key water resource infrastructure in the region. With its strategic location in the Walla Walla District and close proximity to GLEN city, Overnight Reservoir continues to contribute to water security and support sustainable agriculture practices in the area.
While the exact dimensions of the reservoir's spillway, surface area, and maximum discharge are not specified, Overnight Reservoir stands as a vital component of water resource management in Beaverhead County. As water resource and climate enthusiasts, the details of this reservoir highlight the importance of maintaining and monitoring such infrastructure to ensure sustainable water supply and irrigation for agricultural activities in the region.
Year Completed |
1920 |
Dam Length |
850 |
Dam Height |
17 |
River Or Stream |
TR-CAVE GULCH |
Primary Dam Type |
Earth |
Hydraulic Height |
17 |
Nid Storage |
88 |
Hazard Potential |
Low |
Nid Height |
17 |
Beaverhead River At Dillon Mt
|
141cfs |
Big Hole River Near Glen Mt
|
341cfs |
Beaverhead River Near Twin Bridges Mt
|
242cfs |
Big Hole River Near Melrose Mt
|
458cfs |
Beaverhead River At Barretts Mt
|
114cfs |
Ruby River Near Twin Bridges Mt
|
156cfs |
| Location | Reservations | Toilets |
|---|---|---|
Birch Creek Cabin
|
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Glen FAS
|
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Notch Bottom FAS
|
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Dinner Station Campground and Picnic Area
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