Great Loop Planning Resource

Great Loop Lock Reference Library

Find lock locations, phone numbers, VHF channels, operating notes, approach details, and boater-friendly guidance for locks along the Great Loop.

275Reviewed public locks
19States / provinces
29Waterways
275Total imported reference rows

Plan With FPW

Planning a route with locks?

Add lock timing context to your route and create a free float plan before departure.

Plan Your Route

Lock Map

Showing 10 featured locks. Use search or filters to explore the full library.

How to Lock Through

Approach slowly, prepare lines and fenders before arrival, monitor the published VHF channel when available, and follow lockmaster instructions.

VHF Call Scripts

Use the lock name, vessel name, direction of travel, and your request. Confirm current instructions before entering.

Lock Etiquette

Keep wake down near approaches, brief crew before entering, yield as directed, and avoid crowding other vessels.

Gear Checklist

Have fenders, lines, gloves, PFDs, boat hooks, and a working radio ready before reaching the approach.

Common Mistakes

Do not rely on old schedules, stale notes, or unofficial status reports. Check current notices and local lock instructions.

Navigation Safety Note

This page is a planning reference, not a substitute for official notices, charts, lockmaster instructions, or current local conditions. Always confirm lock status, operating hours, closures, restrictions, and instructions with the official authority before arrival.