[DOC] [TLE] Water - Yellowstone National Park (U.S. National Park Service) [PAR] The headwaters of seven great rivers are located in the GYE, and flow from the ... 
Map of Yellowstone showing boarders, rivers, lakes and the four watersheds they 
... The Snake Rivera major tributary of the Columbia Riveroriginates in the... [DOC] [TLE] Columbia River - Wikipedia [PAR] Three-color map of the Columbia River watershed. The watershed is shaped 
roughly like. Columbia River drainage basin. Wikimedia Commons: Columbia 
River. The Columbia River is the largest river in the Pacific Northwest region of 
North America. ... The river is 1,243 miles (2,000 km) long, and its largest tributary 
is the Snake... [DOC] [TLE] Snake River - Wikipedia [PAR] The Snake River is a major river of the greater Pacific Northwest in the United 
States. At 1,078 miles (1,735 km) long, it is the largest tributary of the Columbia 
River, the largest North American river ... Source, Rocky Mountains ..... The 
Snake River watershed includes parts of Yellowstone National Park, Grand Teton 
National... [DOC] [TLE] Yellowstone River - Wikipedia [PAR] The Yellowstone River is a tributary of the Missouri River, approximately 692 
miles (1,114 km) ... Source, Confluence of North and South Forks ... The 
Yellowstone River Watershed is a river basin located in North Dakota, Wyoming, 
and Montana. ... The Yellowstone River flows northward through Yellowstone 
National Park,... [DOC] [TLE] The Volcanoes of Lewis and Clark - The Columbia River and ... [PAR] The largest of these tributaries, the Snake, travels 1,038 miles from its source in 
Yellowstone National Park in Wyoming. ... of the West," when a Spanish maritime 
explorer Martin de Auguilar located a major river near the 42nd parallel. ... Map, 
1766, Coastline around Columbia River, click to enlarge Map, 1775, Coastline... [DOC] [TLE] Columbia River - The Oregon Encyclopedia [PAR] The Columbia's largest tributary, the Snake River, flows more than a thousand 
miles from Two-Oceans Plateau in Yellowstone National Park, across the Snake 
River Plain ... Native communities along the Columbia, from mouth to source, 
ranged .... The first was located on the Columbia by 1940 at Vancouver, 
Washington,... [DOC] [TLE] Yellowstone National Park - Grant Village Area | US-Parks.com ... [PAR] Yellowstone National Park - Grant Village Area | Park travel information from ... 
Situated at an elevation of 7,733 feet, the lake remains cold the year-round, with 
an average ... This large lake is the source of the Lewis River, which flows to the 
Pacific ... The Snake River is a major tributary of the Columbia River and has its... [DOC] [TLE] Facts | Columbia Riverkeeper Facts | Clean Water  Healthy Rivers ... [PAR] Its largest tributary, the Snake River, travels 1,083 miles from its source in 
Yellowstone National Park in Wyoming to meet with the Columbia near the Tri-
cities in... [DOC] [TLE] The Columbia River - Snake River, Washington [PAR] The Snake River originates in Yellowstone National Park, Wyoming, at 9,500 feet 
and ... near Pasco, Washington, at 340 feet in elevation and 1,036 miles from its 
source. The Snake River is the largest tributary of the Columbia River, with a total 
.... Lewiston, Idaho, and Clarkston, Washington, located at the confluence of the... [DOC] [TLE] Rivers in the Upper Missouri, Yellowstone, and Upper Columbia ... [PAR] The Missouri and its major tributary, the Yellowstone River, are the principal 
rivers ... The Yellowstone rises south of Yellowstone National Park in Wyoming, 
flows ... by the MOYOCO ecosystem in Wyoming is the source of water for three 
main... [DOC] [TLE] Where is the Snake River located? | Reference.com [PAR] The Snake River begins in Yellowstone National Park in the state of Wyoming 
and joins the ... The Snake River is the Columbia River's largest tributary. [DOC] [TLE] The Snake River is a major tributary of the Columbia River in the ... [PAR] The river flows from its source in Yellowstone National Park through a series of ... 
Owyhee River The Owyhee River is a tributary of the Snake River located in... [DOC] [TLE] The River  Snake

Question: The source of this main tributary of the Columbia River is located in Yellowstone National Park
Answer: the Snake River