S-25b is an earth dam located in Miami-Dade County, Florida, built in 1976. It carries a Low hazard potential classification.
Dam profile
NID height · 21 ft21 ft tall and 160 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 S-25b
The primary purpose of S-25b 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 owned by Sfwmd (local government). It impounds the Tamiami Canal (c-4) near Miami.
The dam stands 21 feet tall and stretches 160 feet across, creates a reservoir covering 71 acres, and has a maximum storage capacity of 1,500 acre-feet. Completed in 1976, the structure is 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 03/04/2024.
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Location
| State | Florida |
| County | Miami-Dade |
| Nearest City | Miami |
| River/Stream | Tamiami Canal (c-4) |
| Coordinates | 25.79000, -80.26000 |
Physical Characteristics
| Dam Type | Earth |
| NID Height | 21 ft |
| Dam Height | 21 ft |
| Dam Length | 160 ft |
| Year Completed | 1976 (50 years old) |
Storage & Hydraulics
| NID Storage | 1,500 acre-ft |
| Max Storage | 1,500 acre-ft |
| Normal Storage | 1,500 acre-ft |
| Surface Area | 71 acres |
| Max Discharge | 2,000 cfs |
Ownership & Safety
| Purpose | Flood Risk Reduction |
| Owner | Sfwmd |
| Owner Type | Local Government |
| Hazard Classification | Low |
| Condition Assessment | Not assessed |
| Last Inspection | 03/04/2024 |
| Emergency Action Plan | No |
Identifiers
| NID ID | FL00679 |
| Federal ID | FL00679 |
| More Info | State Dam Safety Program |