Maltby Lake West Dam #3
Maltby Lake West Dam #3 is an earth dam located in New Haven County, Connecticut, built in 1862. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Maltby Lake West Dam #3
The primary purpose of Maltby Lake West Dam #3 is water supply. The dam stores water for municipal, industrial, or agricultural use, helping ensure a reliable supply for the surrounding area. The dam is owned by South Central Ct Rwa (public utility). It impounds the Unnamed Flow To Maltby 1 near West Haven.
The dam stands 29 feet tall and stretches 750 feet across, creates a reservoir covering 23 acres, has a maximum storage capacity of 230 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1862, the structure is one of the older dams in the region, with over a century and a half of service.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. An emergency action plan is in place for this dam. The most recent inspection on record was 11/01/2022.
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Location
| State | Connecticut |
| County | New Haven |
| Nearest City | West Haven |
| River/Stream | Unnamed Flow To Maltby 1 |
| Coordinates | 41.30337, -72.98328 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 29 ft |
| Dam Height | 29 ft |
| Dam Length | 750 ft |
| Year Completed | 1862 (164 years old) |
Storage & Hydraulics
| NID Storage | 230 acre-ft |
| Max Storage | 230 acre-ft |
| Normal Storage | 230 acre-ft |
| Surface Area | 23 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 1,336 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Water Supply |
| Owner | South Central CT RWA |
| Owner Type | Public Utility |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 11/01/2022 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CT00113 |
| Federal ID | CT00113 |
| More Info | State Dam Safety Program |