Simmons Upper Reservoir, located in Johnston, Rhode Island, is a vital water resource managed by the local government for debris control purposes.
Wind
Humidity
Constructed in 1865, this masonry dam stands at a height of 16 feet and has a storage capacity of 430 acre-feet. The reservoir covers an area of 48 acres and is fed by Cedar Swamp Brook, with a maximum discharge capacity of 375 cubic feet per second.
Despite its historical significance, Simmons Upper Reservoir poses a high hazard potential and has not been rated for its current condition. The last inspection in 2010 highlighted the need for regular monitoring and maintenance to ensure its structural integrity. With a spillway width of 25 feet, the reservoir is designed to manage excess water flow effectively, safeguarding the surrounding communities from potential flooding risks.
As a key component of the local water management infrastructure, Simmons Upper Reservoir plays a crucial role in maintaining water quality and regulating stream flow. Climate enthusiasts and water resource advocates can appreciate the reservoir's rich history and its ongoing importance in protecting the environment and ensuring water safety for the residents of Providence County, Rhode Island.
Year Completed |
1865 |
Dam Length |
650 |
Dam Height |
16 |
River Or Stream |
CEDAR SWAMP BROOK |
Primary Dam Type |
Masonry |
Surface Area |
48 |
Hydraulic Height |
12 |
Drainage Area |
3 |
Nid Storage |
430 |
Structural Height |
16 |
Hazard Potential |
High |
Nid Height |
16 |