West Polk A-4 is an earth dam located in Polk County, Florida, built in 1961. It carries a Low hazard potential classification.
Dam profile
NID height · 24 ft24 ft tall and 14,400 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 West Polk A-4
The primary purpose of West Polk A-4 is debris control. The dam is designed to catch sediment, rocks, and debris carried by flowing water — particularly important in areas prone to mudslides or heavy erosion. The dam is owned by The Mosaic Company (private). It impounds the Unnamed Pond near Bartow.
The dam stands 24 feet tall and stretches 14,400 feet across, creates a reservoir covering 102 acres, and has a maximum storage capacity of 7,325 acre-feet. Completed in 1961, 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.
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Location
| State | Florida |
| County | Polk |
| Nearest City | Bartow |
| River/Stream | Unnamed Pond |
| Coordinates | 27.84000, -81.99000 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 24 ft |
| Dam Height | 24 ft |
| Dam Length | 14,400 ft |
| Year Completed | 1961 (65 years old) |
Storage & Hydraulics
| NID Storage | 7,325 acre-ft |
| Max Storage | 7,325 acre-ft |
| Normal Storage | 7,325 acre-ft |
| Surface Area | 102 acres |
| Max Discharge | 7 cfs |
Ownership & Safety
| Purpose | Debris Control |
| Owner | The Mosaic Company |
| Owner Type | Private |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Emergency Action Plan | No |
Identifiers
| NID ID | FL00199 |
| Federal ID | FL00199 |
| More Info | State Dam Safety Program |