Baker River Site 5 Dike
Baker River Site 5 Dike is an earth dam located in Grafton County, New Hampshire, built in 1969. It carries a Low hazard potential classification and has a satisfactory condition assessment.
About Baker River Site 5 Dike
The primary purpose of Baker River Site 5 Dike is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is owned by Nh Des Water Division (state). It impounds the Swain Brook near Wentworth.
The dam stands 20 feet tall and stretches 600 feet across, creates a reservoir covering 7 acres, has a maximum storage capacity of 950 acre-feet, and collects water from a drainage area of 4 square miles. Completed in 1969, 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 06/09/2020.
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Location
| State | New Hampshire |
| County | Grafton |
| Nearest City | Wentworth |
| River/Stream | Swain Brook |
| Coordinates | 43.89330, -71.91080 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 20 ft |
| Dam Height | 20 ft |
| Dam Length | 600 ft |
| Year Completed | 1969 (57 years old) |
Storage & Hydraulics
| NID Storage | 950 acre-ft |
| Max Storage | 950 acre-ft |
| Normal Storage | 39 acre-ft |
| Surface Area | 7 acres |
| Drainage Area | 4 sq mi |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | NH DES WATER DIVISION |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 06/09/2020 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NH03387 |
| Federal ID | NH03387 |
| More Info | State Dam Safety Program |