The Port Mayaca Lock is a navigable lock and dam on the Okeechobee Waterway, adjacent to U.S. Route 441 and U.S. Route 98 at Canal Point, in Martin County, Florida, United States. It is located near Port Mayaca at latitude 26° 59″ 5′, longitude -80° 37″ 5′. Port Mayaca Lock is open daily from 7:00am to 5:00pm.

There is a 26 Foot Width Restriction at Port Mayaca Lock until further notice.

NOTICE TO NAVIGATION INTERESTS
US ARMY CORPS OF ENGINEERS LOCAL NUMBER: 2025-017
JACKSONVILLE DISTRICT WATERWAY: Port Mayaca Lock, Okeechobee Water Way
EFFECTIVE: 16 May 2025
ATTN: CESAJ-OD-SN
PO Box 4970
JACKSONVILLE, FL 32232-0019
POC: Kriss Zeller, Chief of Navigation (772) 380-6928
www.saj.usace.army.mil/NTN
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Attention all concerned boaters!
There is a 26 Foot Width Restriction at Port Mayaca Lock until further notice.

REFERENCE:
a. 33 CFR Navigation and Navigable Waters
1. Notice to Navigation
Width Restriction Port Mayaca
2. For up-to-date Lock information, contact the shift operator 7:00 a.m. to 5:00 p.m. at:
St Lucie Lock & Dam 772-287-2665 or 863-662-9148
Port Mayaca Lock & Dam 561-924-2858 or 863-662-9424
Julian Keen, Jr. Lock & Dam 863-946-0414 or 863-662-9533
Ortona Lock & Dam 863-675-0616 or 863- 662-9846
W.P. Franklin Lock & Dam 863-662-9908
Canaveral Lock 321-783-5421 or 863-662-0298 (6:00 a.m. to 10:00 p.m.)