C Ben Ross is a privately owned dam located in Alpine, Idaho, on an unnamed stream that feeds into the Little Weiser River.
Wind
Humidity
Built in 1937, this earth dam stands at a height of 61.3 feet and has a hydraulic height of 57.8 feet, with a storage capacity of 8,550 acre-feet. The dam serves multiple purposes, including flood control and irrigation, and is regulated by the Idaho Department of Water Resources.
With a hazard potential rated as high and a condition assessment deemed fair, C Ben Ross is subject to regular inspections to ensure its structural integrity and safety. The dam features a controlled spillway with a width of 35 feet and outlet gates consisting of slide (sluice gate) mechanisms. In case of emergencies, the dam is equipped with an Emergency Action Plan (EAP) that was last revised in 2014.
Despite its aging infrastructure, C Ben Ross remains a crucial water resource in the region, providing storage and regulation of water flow for various purposes. Its risk assessment ranks as very high, indicating the importance of continued monitoring and maintenance to mitigate potential hazards and ensure the safety of surrounding communities and ecosystems.
Year Completed |
1937 |
Dam Length |
1260 |
Dam Height |
61.3 |
River Or Stream |
UNNAMED STREAM LITTLE WEISER RIVER |
Surface Area |
353 |
Hydraulic Height |
57.8 |
Drainage Area |
5.7 |
Nid Storage |
8550 |
Outlet Gates |
Slide (sluice gate) |
Hazard Potential |
High |
Foundations |
Rock, Soil |
Nid Height |
61 |
Weiser River Nr Cambridge Id
|
172cfs |
Crane Creek At Mouth Nr Weiser Id
|
6cfs |
Weiser River Nr Weiser Id
|
281cfs |
Nf Payette River At Mccall Id
|
265cfs |
Snake River At Weiser Id
|
10100cfs |
Nf Payette River Nr Banks Id
|
335cfs |
| Location | Reservations | Toilets |
|---|---|---|
Big Flat
|
||
Big Flat Campground
|
||
Mundo Hot Springs
|