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Koch is a privately owned dam located in Dewey, South Dakota, along the TR-MOREAU river. This earth-type structure was completed in 1957 and stands at a height of 30 feet with a length of 420 feet. The dam has a storage capacity of 132 acre-feet, with a normal storage level of 94 acre-feet. It is regulated by the South Dakota Department of Environment and Natural Resources (DENR) and is subject to state permitting, inspection, and enforcement, ensuring its safety and compliance with regulations.
Despite its low hazard potential, the condition of L. Koch has not been formally assessed, and the Emergency Action Plan (EAP) status is unknown. The dam has not been modified in recent years and does not have any associated locks or spillways. In case of any emergencies, the designated emergency contacts and risk management measures are not specified. The dam falls under the jurisdiction of the St. Paul District of the US Army Corps of Engineers, but is not managed by the federal agency.
L. Koch serves as an essential infrastructure for water resource management in the region, providing storage for irrigation, flood control, and other purposes. Its historical significance and structural integrity make it a key component of the local water management system. Climate enthusiasts and water resource experts may find interest in studying the dam's design, maintenance, and potential impact on the surrounding environment and community.
Year Completed |
1957 |
Dam Length |
420 |
Dam Height |
30 |
River Or Stream |
TR-MOREAU |
Primary Dam Type |
Earth |
Hydraulic Height |
30 |
Nid Storage |
132 |
Hazard Potential |
Low |
Nid Height |
30 |
Moreau R Near Whitehorse Sd
|
35cfs |
Moreau R Near Faith Sd
|
14cfs |
Cheyenne R Near Plainview Sd
|
0cfs |
Grand R At Little Eagle Sd
|
47cfs |
Oak Cr Near Wakpala Sd
|
10cfs |
| Location | Reservations | Toilets |
|---|---|---|
Faulkner Mountain Campground
|
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Boggy Campground
|
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Lake Greenwood State Park
|