Waterways

The routes that connect North American waters — inland circuits, historic canals, federal waterways, and the ICW

These guides cover the major navigable waterways of the eastern United States — the routes that experienced boaters use to move between oceans, lakes, and coasts. Each guide covers the practical details: controlling depths, air draft limits, lock protocols, timing constraints, fuel availability, and the things that catch first-timers off guard.

Eastern North America

The Great Loop

America's Inland Waterway Circuit — ~6,000 miles of connected rivers, canals, lakes, and sounds forming a continuous loop through the eastern United States and Canada.

~6,000 miles~140 locks19'6" air draft limit
Season Spring start (Apr–May) recommended
  • Atlantic ICW · Gulf Coast · Mississippi
  • Tennessee-Tombigbee · Great Lakes · Erie Canal
  • AGLCA gold burgee · $3,000–6,000/month
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New York State

The Erie Canal

New York's Maritime Highway — 363 miles from Albany to Buffalo, 35 locks, and the engineering feat that made New York City dominant. Mast must be stepped for sailboats.

363 miles35 locks15'6" air draft limit
Season Mid-May through mid-November
  • Lock 17: 40-foot single lift
  • Finger Lakes side trip via Cayuga-Seneca Canal
  • Free locks · Looper culture · Fall foliage
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Alabama & Mississippi

The Tennessee-Tombigbee Waterway

The Shortcut South — 234 miles of federal waterway through wooded wilderness from Pickwick Lake to Mobile Bay, opened 1985. The quieter alternative to the lower Mississippi.

234 miles10 locks9-foot controlling depth
Season September–November (southbound)
  • The Divide Cut: 175-foot walls
  • Free Army Corps locks
  • Avoids lower Mississippi barge traffic
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Atlantic Coast

The Atlantic Intracoastal Waterway

Norfolk to Miami — ~1,100 miles of protected waterway through the Carolinas, the South Carolina Low Country, the Georgia marshes, and the Florida ICW.

~1,100 miles65-foot air draftMile 0 at Norfolk
Season October–November (southbound)
  • Georgia marshes: most scenic section
  • Free anchoring most nights
  • Fall migration armada · $2–4/ft marinas
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About These Guides

Waterway conditions change. Controlling depths are regularly reduced by shoaling between dredging cycles; lock schedules and seasonal openings vary year to year. Always verify current conditions with the Army Corps of Engineers Navigation Conditions reporting system and Active Captain before departure. These guides are editorial resources — the marina directory has facility details for marinas along each route.

Related Cruising Guides

The waterways above connect to several of our regional cruising guides: Chesapeake Bay · Great Lakes · Florida Keys