Ascalmore Structure Y-17a-11 Dam is an earth dam located in Tallahatchie County, Mississippi, built in 1959. It carries a Low hazard potential classification and has a satisfactory condition assessment.
Dam profile
NID height · 40 ft40 ft tall, taller than 86% of U.S. dams with a recorded height. 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 Ascalmore Structure Y-17a-11 Dam
The primary purpose of Ascalmore Structure Y-17a-11 Dam is flood risk reduction. The dam is designed to control downstream flooding by temporarily storing excess water during storms and releasing it at a controlled rate. The dam is local government-owned.
The dam stands 40 feet tall, has a maximum storage capacity of 1,185 acre-feet, and collects water from a drainage area of 3 square miles. Completed in 1959, 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. Its condition is rated satisfactory, indicating no existing or potential dam safety deficiencies are recognized. The most recent inspection on record was 05/10/2013. That was over 13 years ago.
At 40 feet, this dam is taller than 86% of dams nationwide.
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Location
| State | Mississippi |
| County | Tallahatchie |
| Coordinates | 33.91413, -90.01038 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 40 ft |
| Dam Height | 40 ft |
| Year Completed | 1959 (67 years old) |
Storage & Hydraulics
| NID Storage | 1,185 acre-ft |
| Max Storage | 1,185 acre-ft |
| Drainage Area | 3 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Satisfactory |
| Last Inspection | 05/10/2013 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MS01687 |
| Federal ID | MS01687 |
| More Info | State Dam Safety Program |