Toposhaw Watershed Structure Y-27-01 Dam is an earth dam located in Chickasaw County, Mississippi, built in 1971. It carries a Low hazard potential classification.
Dam profile
NID height · 25 ft25 ft tall, taller than 50% 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 Toposhaw Watershed Structure Y-27-01 Dam
The primary purpose of Toposhaw Watershed Structure Y-27-01 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 private-owned.
The dam stands 25 feet tall, has a maximum storage capacity of 928 acre-feet, and collects water from a drainage area of 1 square miles. Completed in 1971, 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 12/15/2021.
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Location
| State | Mississippi |
| County | Chickasaw |
| Coordinates | 33.76928, -89.09101 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 25 ft |
| Dam Height | 25 ft |
| Year Completed | 1971 (55 years old) |
Storage & Hydraulics
| NID Storage | 928 acre-ft |
| Max Storage | 928 acre-ft |
| Drainage Area | 1 sq mi |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 12/15/2021 |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MS00322 |
| Federal ID | MS00322 |
| More Info | State Dam Safety Program |