Plattsmouth 12-A, located in Cass County, Nebraska, is a crucial structure designed by the USDA NRCS for flood risk reduction along the TR-Missouri River.
Wind
Humidity
Completed in 1962, this earth dam stands at a height of 32 feet, with a hydraulic height of 28 feet and a structural height of 39 feet. With a capacity for up to 76 acre-feet of storage and a drainage area of 0.15 square miles, Plattsmouth 12-A plays a vital role in safeguarding the surrounding area from potential flooding events.
Managed by the local government and regulated by the Nebraska Department of Natural Resources, Plattsmouth 12-A has a high hazard potential but is currently assessed as satisfactory in condition. The dam's primary purpose is flood risk reduction, and it has been inspected regularly, with the last assessment conducted in August 2020. Despite its age, the structure continues to meet safety guidelines and plays a critical role in protecting the community of Plattsmouth from the impacts of extreme weather events and rising water levels in the Missouri River.
With a history of successful operation and maintenance, Plattsmouth 12-A serves as a testament to effective collaboration between government agencies and design experts in ensuring the resilience of water resource infrastructure in the face of climate challenges. As climate change intensifies the frequency and severity of floods, structures like Plattsmouth 12-A will be essential in mitigating risks and protecting communities along the Missouri River from the devastating impacts of extreme weather events.
Year Completed |
1962 |
Dam Length |
642 |
Dam Height |
32 |
River Or Stream |
TR-MISSOURI RIVER |
Primary Dam Type |
Earth |
Surface Area |
4 |
Hydraulic Height |
28 |
Drainage Area |
0.15 |
Nid Storage |
76 |
Structural Height |
39 |
Hazard Potential |
High |
Foundations |
Soil |
Nid Height |
39 |
Platte R At Louisville Ne
|
8100cfs |
Weeping Water Creek At Union
|
20cfs |
Missouri River At Omaha
|
17800cfs |
West Nishnabotna River At Randolph
|
439cfs |
Missouri River At Nebraska City
|
25000cfs |
Platte R Nr Ashland
|
6290cfs |
| Location | Reservations | Toilets |
|---|---|---|
Pony Creek Co Park
|
||
Offutt AFB Military
|
||
FAMCamp
|
||
Glenwood Lake Park
|
||
Haworth City Park - Bellevue
|
||
Camp Wakonda
|