Simmons Upper Reservoir
High HazardPoor ConditionEmergency Action Plan: No
Location
| State | Rhode Island |
| County | Providence |
| Nearest City | JOHNSTON |
| River/Stream | CEDAR SWAMP BROOK |
| Coordinates | 41.79709, -71.51953 |
Physical Characteristics
| Dam Type | Masonry |
| NID Height | 16 ft |
| Dam Height | 16 ft |
| Dam Length | 650 ft |
| Year Completed | 1865 (161 years old) |
Storage & Hydraulics
| NID Storage | 430 acre-ft |
| Max Storage | 430 acre-ft |
| Normal Storage | 384 acre-ft |
| Surface Area | 48 acres |
| Drainage Area | 3 sq mi |
| Max Discharge | 375 cfs |
Ownership & Safety
| Purpose | Debris Control |
| Owner | JOHNSTON, TOWN OF |
| Owner Type | Local Government |
| Hazard Classification | High |
| Condition Assessment | Poor |
| Emergency Action Plan | No |