Chasmars Pond Dam
Chasmars Pond Dam is a masonry dam located in Fairfield County, Connecticut, built in 1900. It carries a Significant hazard potential classification and has a satisfactory condition assessment.
About Chasmars Pond Dam
The primary purpose of Chasmars Pond Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Consolidated Rail Corporation;station 315, Llc (private). It impounds the Five Mile River near Darien.
The dam stands 11 feet tall and stretches 92 feet across, creates a reservoir covering 26 acres, has a maximum storage capacity of 56 acre-feet, and collects water from a drainage area of 11 square miles. Completed in 1900, the structure is over a century old.
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 01/13/2016. That was over 10 years ago.
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Location
| State | Connecticut |
| County | Fairfield |
| Nearest City | Darien |
| River/Stream | Five Mile River |
| Coordinates | 41.07755, -73.44637 |
Physical Characteristics
| Dam Type | Masonry |
| NID Height | 11 ft |
| Dam Height | 11 ft |
| Dam Length | 92 ft |
| Year Completed | 1900 (126 years old) |
Storage & Hydraulics
| NID Storage | 56 acre-ft |
| Max Storage | 56 acre-ft |
| Normal Storage | 26 acre-ft |
| Surface Area | 26 acres |
| Drainage Area | 11 sq mi |
| Max Discharge | 467 cfs |
Ownership & Safety
| Purpose | Recreation |
| Owner | Consolidated Rail Corporation;Station 315, LLC |
| Owner Type | Private |
| Hazard Classification | Significant |
| Condition Assessment | Satisfactory |
| Last Inspection | 01/13/2016 |
| Emergency Action Plan | Yes |
Identifiers
| NID ID | CT00059 |
| Federal ID | CT00059 |
| More Info | State Dam Safety Program |