Seper Lake Dam, also known as Johnson Lake Dam, is a private dam located in Montgomery County, Missouri.
Wind
Humidity
Built in 1954 by designer Forest Johnson, the dam serves primarily for irrigation purposes, but also provides fire protection, stock, and recreational opportunities. With a height of 40 feet and a length of 200 feet, the dam holds a maximum storage capacity of 53 acre-feet and covers a surface area of 4 acres.
The dam, situated along the TR-Whipporwill Creek, is regulated by the state's Dam and Reservoir Safety Program. Despite its low hazard potential and satisfactory condition assessment, the dam undergoes regular inspections to ensure its structural integrity. With a moderate risk assessment rating of 3, the dam has no associated emergency action plan or inundation maps prepared, indicating a need for further risk management measures to mitigate potential hazards.
Overall, Seper Lake Dam stands as a vital infrastructure for water resource management in the region, providing essential irrigation and recreational benefits while maintaining a moderate level of risk that requires ongoing monitoring and management to ensure the safety of surrounding communities and ecosystems.
Year Completed |
1954 |
Dam Length |
200 |
Dam Height |
40 |
River Or Stream |
TR-WHIPPORWILL CREEK |
Primary Dam Type |
Earth |
Surface Area |
4 |
Drainage Area |
13 |
Nid Storage |
53 |
Structural Height |
39 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Rock, Soil |
Nid Height |
40 |
Missouri River At Hermann
|
30000cfs |
Cuivre River Near Troy
|
29cfs |
Bourbeuse River At Union
|
101cfs |
South Fork Salt River Above Santa Fe
|
5cfs |
Gasconade River Near Rich Fountain
|
942cfs |
Long Branch Near Santa Fe
|
12cfs |
| Location | Reservations | Toilets |
|---|---|---|
Graham Cave State Park
|
||
Camping @ Graham Cave State Park
|
||
Hermann City RV Park
|