The best replacement for canals is railroads.

The best alternatives to canals are rated as following:
★★★★★  railroads
★★★  implants
★★  crowns
★★  dental implants
★  railways
★  ruins
★  extractions

Your alternative for canals is not listed? Suggest!
Speaking about canals, one probably shouldn't forget about crowns.

Other search terms related to canals and their ratings are:
★★★★★ crowns
You have in mind a companion for canals and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of canals in all years. Click on graph for more.
canals
railroads
implants