The search engine giant is also incorporating details of the country's locks, bridges and towpaths in a bid to encourage users to enjoy Britain's waterways.
Google is mapping out 2,000 miles of river path across the UK in partnership with the Canal and River Trust, and will roll out the update later this year.
Ed Parsons, a geospatial technologist at Google UK, said: "Canal towpaths offer green routes through our towns and cities, and by working with the Canal and River Trust we're adding towpaths to Google Maps and encouraging people to discover their local waterway."
Earlier this year, Google began adding live Tube data to Google Maps ahead of the Olympic Games in London this summer. Offline browsing and 3D support will be introduced in the near future.
The news follows reports that Apple is removing Google Maps from its iOS devices with the launch of its next mobile operating system iOS 6. The iPhone maker is developing its own Maps service for its first-party products.