Port Mayaca Lock and Dam

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Port Mayaca Lock and Dam
Port Mayaca Navigational Lock 01.JPG
View through open lakeside gates of the Port Mayaca Navigational Lock, onto Lake Okeechobee.
Official name Port Mayaca Lock and Dam
Location Flag of the United States.svg Canal Point, Florida, United States
Opening date 1977
Construction cost $13,100,000
Dam and spillways
Height unlimited
Length 400 feet
Width (base) 56 feet

The Port Mayaca Lock is a navigable lock and dam on the Okeechobee Waterway (St. Lucie Canal), adjacent to U.S. Route 441 and U.S. Route 98 at Canal Point, in Martin County, Florida, United States.[1]

It is located near Port Mayaca at latitude 26° 59" 5', longitude -80° 37" 5'.[2]

Port Mayaca Lock is open daily from 6:00am to 9:30pm.[3]

The total cost of construction was $13.1 million.[3]


This structure was created to help raise the water level in the lake, for the purpose of retaining fresh water for agricultural use, city water supply, and for navigation. It also serves for regulating flood control water into the Everglades during hurricane season.[4]

Technical information[edit]

The lock chamber is 56 feet (17 m) wide by 400 feet (120 m) long, and 14 feet (4.3 m) deep. The lift distance between the St. Lucie Canal and Lake Okeechobee is normally 1/2 to 2 feet (0.61 m). The channel width is 100 feet (30 m), and 8 feet (2.4 m) deep.[3]

The lock gates are "sector gates" (pie-slice shaped), and are made of steel. The spillway is ogee-type concrete, with 4 vertical lift gates.[3]

The discharge capacity is 14,800 cubic feet per second (420 m3/s).[3]

Radio channel[edit]

This lock operates on Marine VHF radio channel 13.[3]


See also[edit]


External links[edit]

Coordinates: 26°59′04″N 80°37′16″W / 26.984531°N 80.621105°W / 26.984531; -80.621105