The Newtown Hoffman Site 18 Dam, also known as Harris Hill Dam, is a vital flood risk reduction structure located in Elmira, New York.
Wind
Humidity
Built in 1978 by the USDA NRCS, this earth dam stands at a height of 71 feet and spans 780 feet along Hoffman Brook. With a storage capacity of 750 acre-feet and a drainage area of 3.6 square miles, this dam plays a crucial role in mitigating the impact of potential flooding events in the region.
Managed by the local government and regulated by the NYS DEC, the Newtown Hoffman Site 18 Dam is subject to regular inspections to ensure its structural integrity and safety. The dam has been assessed to be in fair condition, with a high hazard potential due to its location and function. Despite its moderate risk rating, the dam has a spillway width of 269 feet for uncontrolled releases and a maximum discharge capacity of 18,130 cubic feet per second, providing a level of protection to the surrounding area.
For water resource and climate enthusiasts, the Newtown Hoffman Site 18 Dam offers a fascinating case study in flood risk reduction and dam management. With its strategic location, design features, and operational protocols, this dam serves as a key asset in safeguarding the community against potential flooding events. As efforts continue to maintain and enhance its functionality, the Newtown Hoffman Site 18 Dam remains an essential infrastructure element in the water resource management landscape of Chemung County, New York.
Year Completed |
1978 |
Dam Length |
780 |
Dam Height |
71 |
River Or Stream |
HOFFMAN BROOK |
Primary Dam Type |
Earth |
Surface Area |
11 |
Drainage Area |
3.6 |
Nid Storage |
750 |
Hazard Potential |
High |
Nid Height |
71 |
Chemung River At Elmira Ny
|
444cfs |
Chemung River At Corning Ny
|
142cfs |
Chemung River At Chemung Ny
|
496cfs |
Tioga River Near Erwins Ny
|
248cfs |
Tioga River At Lindley Ny
|
59cfs |
Cowanesque River Near Lawrenceville
|
86cfs |