Otisco Lake Dam in Marietta, New York, is a concrete structure completed in 1956 with a primary purpose of recreation and water supply.
Wind
Humidity
The dam stands at a height of 18 feet and spans 310 feet, holding a maximum storage capacity of 47,890 acre-feet. Situated on Ninemile Creek, the dam serves as a key regulating point for water flow, with a controlled spillway width of 55 feet to manage maximum discharge rates of up to 31,345 cubic feet per second.
Managed by a public utility, the dam is regulated and inspected by the New York State Department of Environmental Conservation. A recent inspection in July 2019 deemed the dam's condition as satisfactory, although its hazard potential is classified as high due to its location and function. With a drainage area of 39.15 square miles and a surface area of 2,291 acres, Otisco Lake Dam plays a crucial role in water resource management and flood control efforts in the region, demonstrating a commitment to maintaining safe and sustainable infrastructure for the local community.
Overall, Otisco Lake Dam stands as a vital component of the water supply and recreation infrastructure in Onondaga County, New York. With a focus on risk management and compliance with regulatory guidelines, the dam provides essential services while balancing the need for public safety and environmental stewardship. As climate change impacts water resources, the continued monitoring and maintenance of structures like Otisco Lake Dam will be crucial in ensuring the resilience and sustainability of water systems for future generations.
Year Completed |
1956 |
Dam Length |
310 |
Dam Height |
18 |
River Or Stream |
NINEMILE CREEK |
Primary Dam Type |
Concrete |
Surface Area |
2291 |
Drainage Area |
39.15 |
Nid Storage |
47890 |
Hazard Potential |
High |
Nid Height |
18 |