Little Cohas Brook Dam
Low HazardSatisfactory ConditionEmergency Action Plan: Not Required
Location
| State | New Hampshire |
| County | Rockingham |
| Nearest City | LONDONDERRY |
| River/Stream | LITTLE COHAS BROOK |
| Coordinates | 42.91770, -71.41690 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 70 ft |
| Year Completed | 1953 (73 years old) |
Storage & Hydraulics
| NID Storage | 867 acre-ft |
| Max Storage | 867 acre-ft |
| Normal Storage | 39 acre-ft |
| Surface Area | 17 acres |
| Drainage Area | 6 sq mi |
| Max Discharge | 1,011 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | NH DOT |
| Owner Type | State |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 10/17/2022 |
| Emergency Action Plan | Not Required |