Irwin Mill Dam is an earth dam located in Jackson County, Florida, built in 1970. It carries a Low hazard potential classification.
Dam profile
NID height · 10 ft10 ft tall and 250 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 Irwin Mill Dam
Irwin Mill Dam is a dam in Jackson, Florida. The dam is owned by George Flowers (private). It impounds the Irwin Mill Creek.
The dam stands 10 feet tall and stretches 250 feet across, creates a reservoir covering 7 acres, and has a maximum storage capacity of 66 acre-feet. Completed in 1970, 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 05/10/1994. That was over 32 years ago.
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Location
| State | Florida |
| County | Jackson |
| Nearest City | None |
| River/Stream | Irwin Mill Creek |
| Coordinates | 30.99745, -85.02842 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 10 ft |
| Dam Height | 10 ft |
| Dam Length | 250 ft |
| Year Completed | 1970 (56 years old) |
Storage & Hydraulics
| NID Storage | 66 acre-ft |
| Max Storage | 66 acre-ft |
| Normal Storage | 40 acre-ft |
| Surface Area | 7 acres |
| Max Discharge | 234 cfs |
Ownership & Safety
| Purpose | Other |
| Owner | George Flowers |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 05/10/1994 |
| Emergency Action Plan | No |
Identifiers
| NID ID | FL00558 |
| Federal ID | FL00558 |
| More Info | State Dam Safety Program |