Noralyn N-11c is an earth dam located in Polk County, Florida, built in 1965. It carries a Low hazard potential classification.
Dam profile
NID height · 40 ft40 ft tall and 10,550 ft long, 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 Noralyn N-11c
The primary purpose of Noralyn N-11c 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 40 feet tall and stretches 10,550 feet across, creates a reservoir covering 1,214 acres, and has a maximum storage capacity of 12,301 acre-feet. Completed in 1965, 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.
At 40 feet, this dam is taller than 86% of dams nationwide.
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Location
| State | Florida |
| County | Polk |
| Nearest City | Bartow |
| River/Stream | Unnamed Pond |
| Coordinates | 27.82000, -81.86000 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 40 ft |
| Dam Height | 40 ft |
| Dam Length | 10,550 ft |
| Year Completed | 1965 (61 years old) |
Storage & Hydraulics
| NID Storage | 12,301 acre-ft |
| Max Storage | 12,301 acre-ft |
| Normal Storage | 12,301 acre-ft |
| Surface Area | 1,214 acres |
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 | FL00189 |
| Federal ID | FL00189 |
| More Info | State Dam Safety Program |