You can use it for fun by taking tours or fishing.
Small boats and pleasure craft uses the Erie Canal today. It is also a cycling trail and used for fishing. But there still is some commercial traffic.
Yes the Erie Canal is still in business today. Much of it is now recreation but there is still commercial traffic such as barges of corn from Canada to be turned into ethanol.https://www.npr.org/2013/06/25/195426326/commercial-shipping-revived-along-erie-canal
The Erie Canal was used by many thousands of people in New York and immigrants that went on to settle in the Midwest.
The Erie Canal is still used mostly for recreation and fishing. But there are some barges of corn and wheat for ethanol production using the Erie Canal.
Many people from Europe used the Erie Canal to get to Wisconsin and Illinois to farm.
The Welland Canal.
The Erie Canal
The original Erie Canal had 83 locks. The canal was improved and the number of locks went down to 72 locks. The canal was improved again and now there are only 35 locks.
The Erie Canal was not cemented.
No the Erie Canal did not join the Ohio River. But New York was not the only state that built canals. The state of Ohio also built canals. The Miami and Erie Canal went to the Ohio River. The Erie and Ohio Canal also reached the Ohio River. Neither of these canals were as successful as the Erie Canal.
the Erie canal
The Ohio and Erie Canal linked Cleveland with Lake Erie.