Riverside
Riverside is a gravity dam located in Coos County, New Hampshire, built in 1970. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Riverside
The primary purpose of Riverside is hydroelectric. The dam generates hydroelectric power by channeling water through turbines, converting the energy of flowing water into electricity. It impounds the Androscoggin River near Berlin.
The dam stands 21 feet tall and stretches 846 feet across, creates a reservoir covering 7 acres, has a maximum storage capacity of 60 acre-feet, and collects water from a drainage area of 1,338 square miles. Completed in 1970, the structure is well into its service life at over 50 years old.
This dam has a low hazard potential classification, meaning that failure would cause minimal damage, limited primarily to the dam owner's property, with no expected loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 07/12/2022.
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Location
| State | New Hampshire |
| County | Coos |
| Nearest City | Berlin |
| River/Stream | Androscoggin River |
| Coordinates | 44.47390, -71.17020 |
Physical Characteristics
| Dam Type | Gravity |
| NID Height | 21 ft |
| Dam Height | 21 ft |
| Dam Length | 846 ft |
| Year Completed | 1970 (56 years old) |
Storage & Hydraulics
| NID Storage | 60 acre-ft |
| Max Storage | 60 acre-ft |
| Normal Storage | 60 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 1,338 sq mi |
| Max Discharge | 37,800 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Hydroelectric |
| Owner Type | Not Listed |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 07/12/2022 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NH00158 |
| Federal ID | NH00158 |
| More Info | State Dam Safety Program |