Mongaup is a captivating hydroelectric dam located on the Mongaup River in Sullivan, New York.
Wind
Humidity
Built in 1925 by Chas. T. Main, Inc., this gravity dam stands at a height of 45 feet and has a length of 384 feet, providing a maximum storage capacity of 1779 acre-feet. With a surface area of 120 acres and a drainage area of 158 square miles, Mongaup has a maximum discharge capacity of 34,000 cubic feet per second.
Operated by the Federal Energy Regulatory Commission, Mongaup's primary purpose is hydroelectric power generation. The dam is equipped with an uncontrolled spillway with a width of 164 feet and is considered to have a high hazard potential. Although its condition assessment is not available, the dam is inspected annually to ensure its safety and integrity. In case of emergencies, an Emergency Action Plan is in place, meeting guidelines and last revised in November 2020.
Mongaup's rich history, strategic location, and significant contribution to hydroelectric power generation make it a prominent feature in New York's water resource infrastructure. Climate and water resource enthusiasts will find Mongaup an intriguing site, as it embodies the intersection of engineering ingenuity, environmental stewardship, and sustainable energy production.
Year Completed |
1925 |
Dam Length |
384 |
Dam Height |
45 |
River Or Stream |
Mongaup River |
Primary Dam Type |
Gravity |
Surface Area |
120 |
Drainage Area |
158 |
Nid Storage |
1779 |
Hazard Potential |
High |
Foundations |
Rock |
Nid Height |
45 |