Johnson Millpond Dam
Significant HazardSatisfactory ConditionEmergency Action Plan: No
Location
| State | Connecticut |
| County | Middlesex |
| Nearest City | EAST HADDAM |
| River/Stream | MOODUS RIVER |
| Coordinates | 41.49423, -72.46606 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Dam Length | 414.5 ft |
| Year Completed | 1880 (146 years old) |
Storage & Hydraulics
| NID Storage | 143 acre-ft |
| Max Storage | 143 acre-ft |
| Normal Storage | 143 acre-ft |
| Surface Area | 13 acres |
| Drainage Area | 15 sq mi |
| Max Discharge | 2,544 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Rajon Realty Corporation |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 04/28/2022 |
| Emergency Action Plan | No |