Thendara Dam is a concrete dam located in Herkimer County, New York, built in 1980. It carries a Low hazard potential classification.
Dam profile
NID height · 12 ft12 ft tall and 142 ft long. Height is drawn to scale against a two-story house, about 25 ft; the profile is a generic concrete gravity section and the water level is illustrative.
About Thendara Dam
The primary purpose of Thendara Dam is recreation. The dam creates a reservoir used for recreational activities such as fishing, boating, and swimming. The dam is owned by Town of Webb (local government). It impounds the Middle Branch Moose River near Minnehaha.
The dam stands 12 feet tall and stretches 142 feet across, creates a reservoir covering 53 acres, has a maximum storage capacity of 212 acre-feet, and collects water from a drainage area of 145 square miles. Completed in 1980, the structure is 46 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 08/14/2009. That was over 17 years ago.
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Location
| State | New York |
| County | Herkimer |
| Nearest City | Minnehaha |
| River/Stream | Middle Branch Moose River |
| Coordinates | 43.68861, -75.01250 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 12 ft |
| Dam Height | 12 ft |
| Dam Length | 142 ft |
| Year Completed | 1980 (46 years old) |
Storage & Hydraulics
| NID Storage | 212 acre-ft |
| Max Storage | 212 acre-ft |
| Normal Storage | 106 acre-ft |
| Surface Area | 53 acres |
| Drainage Area | 145 sq mi |
| Max Discharge | 2,619 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Recreation |
| Owner | Town of Webb |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 08/14/2009 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | NY01631 |
| Federal ID | NY01631 |
| More Info | State Dam Safety Program |