Occum, located in Norwich, Connecticut, is a masonry dam on the Shetucket River primarily used for hydroelectric purposes.
Wind
Humidity
Built in 1900, this dam stands at 14 feet high and spans 520 feet in length, with a storage capacity of 155 acre-feet and a surface area of 65 acres. The dam is regulated by the Federal Energy Regulatory Commission and has a low hazard potential, with a moderate risk assessment rating.
Despite not being state-regulated or inspected, Occum has a history of regular maintenance and emergency preparedness, with an updated Emergency Action Plan in place as of December 2020. The dam's spillway is uncontrolled and has a width of 450 feet, serving as a safety feature in case of high water levels. With a risk assessment rating of moderate, Occum is closely monitored to ensure the safety and integrity of the structure for both water resource and climate enthusiasts in the area.
Year Completed |
1900 |
Dam Length |
520 |
Dam Height |
14 |
River Or Stream |
Shetucket River |
Primary Dam Type |
Masonry |
Surface Area |
65 |
Drainage Area |
465 |
Nid Storage |
155 |
Hazard Potential |
Low |
Nid Height |
14 |
Shetucket River At Taftville
|
885cfs |
Quinebaug River At Jewett City
|
1380cfs |
Yantic River At Yantic
|
147cfs |
Little River Near Hanover
|
44cfs |
Shetucket River Near Willimantic
|
777cfs |
Natchaug River At Willimantic
|
322cfs |