Lenape Lake Dam in Sullivan, Indiana, also known as Jason (Lenape) Lake Dam, is a state-owned structure designed by the USDA NRCS for recreational purposes.
Wind
Humidity
Completed in 1968, this earth dam stands at 29 feet high and spans 667 feet in length, creating a reservoir with a normal storage capacity of 341 acre-feet and a maximum storage of 957 acre-feet. The dam is located on an unnamed tributary of Big Branch and is regulated by the Indiana Department of Natural Resources.
Despite its low hazard potential, Lenape Lake Dam is rated as being in poor condition, with its last assessment conducted in 2013. The dam lacks a spillway and outlet gates, raising concerns about its ability to safely handle maximum discharge. Its risk assessment is classified as high, highlighting the need for further risk management measures to ensure the safety of the surrounding community. With a history of state inspection and enforcement, Lenape Lake Dam remains under state jurisdiction and regulation, underscoring the importance of ongoing maintenance and monitoring to mitigate potential risks associated with its aging infrastructure.
Year Completed |
1968 |
Dam Length |
667 |
Dam Height |
29 |
River Or Stream |
UNNAMED TRIBUTARY BIG BRANCH |
Primary Dam Type |
Earth |
Surface Area |
47.81 |
Hydraulic Height |
29 |
Drainage Area |
0.4 |
Nid Storage |
957 |
Structural Height |
29 |
Outlet Gates |
None |
Hazard Potential |
Low |
Foundations |
Rock, Soil |
Nid Height |
29 |
Busseron Creek Near Carlisle
|
452cfs |
Eel River At Bowling Green
|
145cfs |
Wabash River At Riverton Ind
|
1870cfs |
White River At Newberry
|
2530cfs |
Wabash River At Terre Haute
|
1770cfs |
Mill Creek Near Cataract
|
158cfs |
| Location | Reservations | Toilets |
|---|---|---|
Sullivan County Park
|
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Sunset City Park
|
||
Res 26 - Greene - Sullivan State Forest
|
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Greene - Sullivan State Forest
|