G-58
G-58 is a concrete dam located in Miami-Dade County, Florida, built in 1956. It carries a Significant hazard potential classification.
About G-58
G-58 is a dam in Miami-Dade, Florida. The dam is owned by Sfwmd (local government). It impounds the Arch Creek near North Miami Beach.
The dam stands 14 feet tall and stretches 50 feet across, creates a reservoir covering 50 acres, has a maximum storage capacity of 200 acre-feet, and collects water from a drainage area of 6 square miles. Completed in 1956, the structure is well into its service life at over 50 years old.
This dam has a significant hazard potential classification, meaning that a failure could cause significant economic damage — flooding roads, bridges, or property downstream — but is not expected to result in loss of life. The most recent inspection on record was 07/03/1905. That was over 121 years ago.
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Location
| State | Florida |
| County | Miami-Dade |
| Nearest City | North Miami Beach |
| River/Stream | Arch Creek |
| Coordinates | 25.90060, -80.16240 |
Physical Characteristics
| Dam Type | Concrete |
| NID Height | 14 ft |
| Dam Height | 10 ft |
| Dam Length | 50 ft |
| Year Completed | 1956 (70 years old) |
Storage & Hydraulics
| NID Storage | 200 acre-ft |
| Max Storage | 200 acre-ft |
| Normal Storage | 150 acre-ft |
| Surface Area | 50 acres |
| Drainage Area | 6 sq mi |
| Max Discharge | 300 cfs |
| Spillway Type | Controlled |
Ownership & Safety
| Purpose | Other |
| Owner | SFWMD |
| Owner Type | Local Government |
| Hazard Classification | Significant |
| Condition Assessment | Not Rated |
| Last Inspection | 07/03/1905 |
| Emergency Action Plan | No |
Identifiers
| NID ID | FL76005 |
| Federal ID | FL76005 |
| More Info | State Dam Safety Program |