How the Erie Canal Was Built: 1817–1825

Engineering the "Eighth Wonder of the World"

The 363-mile Erie Canal (Albany to Buffalo) was built by hand, horse, and ingenuity:

1. Survey & Planning (1808–1817)

James Geddes, Benjamin Wright mapped route across NY's glacial terrain—minimizing locks by following contours.

2. Workforce (50,000+ total)

• Irish immigrants (majority), local farmers, New Englanders.
• Organized in gangs; paid $0.50–$1.00/day + whiskey ration.
• Malaria, accidents, cholera took thousands of lives.

3. Excavation & Earthmoving

• Pick, shovel, wheelbarrow, horse-drawn scraper.
• "Long level" (69 miles) required zero locks—precision grading.
• Deep Cut (Tonawanda): 30-ft rock cut, blasted with black powder.

4. Locks & Aqueducts (83 locks, 18 aqueducts)

• Locks: Stone masonry, 90×15 ft, wooden gates, manual valves. Lift 8–12 ft each.
• Aqueducts: Stone arches carrying canal over rivers (e.g., Genesee, Mohawk).

5. Water Supply

Reservoirs (e.g., Oneida Lake feeders) + summit-level management. Gravity-fed.

6. Completion & Impact

• Opened October 26, 1825. "Wedding of the Waters" (Lake Erie water poured in NYC harbor).
• Freight costs dropped 90%; NYC became premier port; Midwest settlement accelerated.

Enlarged 1835–1862; modernized to Barge Canal (1918). Now mainly recreational.