Alaska's major rivers, such as the Gulkana, Copper, and Yukon Rivers, are clearly indicated on the Alaska River Map, as are the Gulf of Alaska and the Beaufort Sea. In addition to their tourism possibilities, the rivers of Alaska play an important role in the state's irrigation system. The Gulkana River offers tourists a broad scope of activities, from fishing to picking wild blueberries. The Yukon River gives visitors an opportunity to explore Canada's spruce forests. The copper River provides excellent rafting possibilities. The Saganavirktok River offers fishing options, and leads to the Arctic Ocean. The Kuskokwim River is another prominent natural stream, spanning over 680 miles. For the convenience of tourists who wish to take a tour of Alaska's waterways, the Alaska River Map provides a clear illustration of those rivers' courses. The map also highlights various cities and boroughs located near these rivers.