Hanes & Bontecou Marsh Dam is an earth dam located in Dutchess County, New York, built in 1956. It carries a Low hazard potential classification.
Dam profile
NID height · 7 ft7 ft tall and 350 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic embankment section and the water level is illustrative.
About Hanes & Bontecou Marsh Dam
Hanes & Bontecou Marsh Dam is a dam in Dutchess, New York. The dam is owned by John W Hanes (private). It impounds the Tr-shaw Brook near Millbrook.
The dam stands 7 feet tall and stretches 350 feet across, creates a reservoir covering 17 acres, has a maximum storage capacity of 75 acre-feet, and collects water from a drainage area of 0 square miles. Completed in 1956, 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. The most recent inspection on record was 08/17/1994. That was over 32 years ago.
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Location
| State | New York |
| County | Dutchess |
| Nearest City | Millbrook |
| River/Stream | Tr-shaw Brook |
| Coordinates | 41.81111, -73.63750 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 7 ft |
| Dam Height | 7 ft |
| Dam Length | 350 ft |
| Year Completed | 1956 (70 years old) |
Storage & Hydraulics
| NID Storage | 75 acre-ft |
| Max Storage | 75 acre-ft |
| Normal Storage | 24 acre-ft |
| Surface Area | 17 acres |
| Drainage Area | 0 sq mi |
| Max Discharge | 152 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Other |
| Owner | John W Hanes |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 08/17/1994 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NY13857 |
| Federal ID | NY13857 |
| More Info | State Dam Safety Program |