![]() ![]() America's New York City has one of the world's finest natural harbors. Iron, steel, and timber are some of the raw materials shipped from manufacturing sites in the U.S. The harbors in North America's Great Lakes, including Toronto, Ontario, Canada (Lake Ontario), and Chicago, Illinois, United States, (Lake Michigan), remain some of the busiest for industrial ship traffic. They also occur along lakeshores and in estuaries, where rivers empty into larger bodies of water. They occur in fjords, coves, and lagoons. They are located along many types of coastline. The earthen material dredged from harbors can be used for nearby facilities, like larger beaches or stronger breakwaters ( seawalls). This deepens and often cleans the body of water. Dredging is the process of removing sand and sediment from the bed of a body of water. Dredging keeps shipping channels deep and free of silt. A harbor is deep enough to keep ships from touching bottom and should give ships and boats enough room to turn and pass each other. Harbors can provide safe anchorage and permit the transfer of cargo and passengers between ships and the shore. A harbor is a body of water sheltered by natural or artificial barriers. ![]()
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