Grant Lake is an earth dam located in Humphreys County, Mississippi, built in 1977. It carries a Low hazard potential classification.
Dam profile
NID height · 8 ft8 ft tall and 7,920 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 Grant Lake
Grant Lake is a dam in Humphreys, Mississippi. The dam is owned by Charles Grant (private). It impounds the Bock Bayou -os near Isola.
The dam stands 8 feet tall and stretches 7,920 feet across, and has a maximum storage capacity of 480 acre-feet. Completed in 1977, the structure is 49 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.
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Location
| State | Mississippi |
| County | Humphreys |
| Nearest City | Isola |
| River/Stream | Bock Bayou -os |
| Coordinates | 33.17928, -90.66080 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 8 ft |
| Dam Height | 8 ft |
| Dam Length | 7,920 ft |
| Year Completed | 1977 (49 years old) |
Storage & Hydraulics
| NID Storage | 480 acre-ft |
| Max Storage | 480 acre-ft |
| Normal Storage | 480 acre-ft |
| Max Discharge | 14 cfs |
| Spillway Type | Uncontrolled |
Ownership & Safety
| Purpose | Other |
| Owner | Charles Grant |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | Not Required |
Identifiers
| NID ID | MS00561 |
| Federal ID | MS00561 |
| More Info | State Dam Safety Program |