Hanover Reservoir Dam, located in Sprague, Connecticut, is a local government-owned structure that serves primarily for recreational purposes.
Wind
Humidity
Built in 1900, this Earth-type dam stands at a height of 26.5 feet and spans 750 feet in length, with a storage capacity of 400 acre-feet. The dam impounds the Little River, creating a surface area of 22 acres and covering a drainage area of 33.3 square miles.
Despite its historical significance, Hanover Reservoir Dam is currently rated as having a high hazard potential and poor condition assessment. The spillway, with a width of 147 feet, is uncontrolled, presenting potential safety risks. The dam's last inspection was conducted in November 2014, with a frequency of every two years, indicating a need for regular monitoring and maintenance to ensure the safety of the surrounding community.
Given its moderate risk rating and the importance of its recreational use, efforts should be made to address the dam's structural integrity and emergency preparedness. With its proximity to residential areas in New London County, it is crucial for Hanover Reservoir Dam to undergo necessary repairs and updates to mitigate potential risks and ensure the safety of both the dam and the community it serves.
Year Completed |
1900 |
Dam Length |
750 |
Dam Height |
26.5 |
River Or Stream |
LITTLE RIVER |
Primary Dam Type |
Earth |
Surface Area |
22 |
Drainage Area |
33.3 |
Nid Storage |
400 |
Outlet Gates |
Slide (sluice gate) |
Hazard Potential |
High |
Foundations |
Unlisted/Unknown |
Nid Height |
27 |
Little River Near Hanover
|
44cfs |
Quinebaug River At Jewett City
|
1380cfs |
Shetucket River At Taftville
|
885cfs |
Yantic River At Yantic
|
147cfs |
Shetucket River Near Willimantic
|
777cfs |
Natchaug River At Willimantic
|
322cfs |