Missouri River

Missouri River

The Missouri River flows through the central United States, and is a tributary of the Mississippi River. It is the longest river in North America and drains the third largest area, though only the thirteenth largest by discharge. The Missouri's watershed encompasses most of the American Great...

 watershed

• Gallatin River
  Gallatin River
  The Gallatin River is a tributary of the Missouri River, approximately 120 mi , in the U.S. states of Wyoming and Montana...
  
  
• Madison River
  Madison River
  The Madison River is a headwater tributary of the Missouri River, approximately 183 miles long, in Wyoming and Montana. Its confluence with the Jefferson and Gallatin rivers near Three Forks, Montana form the Missouri River....
  
  
  • Firehole River
    Firehole River
    The Firehole River is one of two major tributaries of the Madison River. It flows north approximately from its source in Madison Lake on the Continental Divide to join the Gibbon River at Madison Junction in Yellowstone National Park...
    
    
  • Gibbon River
    Gibbon River
    The Gibbon River is a river in Yellowstone National Park, in Wyoming, the United States. It rises in the center of the park at Grebe Lake. It flows for a short distance into Wolf Lake. Below Wolf Lake, the river flows through Virginia Cascades into the Norris valley. It flows near the Norris...
    
    
• Yellowstone River
  Yellowstone River
  The Yellowstone River is a tributary of the Missouri River, approximately long, in the western United States. Considered the principal tributary of the upper Missouri, the river and its tributaries drain a wide area stretching from the Rocky Mountains in the vicinity of the Yellowstone National...
  
  
  • Gardner River
    Gardner River
    The Gardner River is a tributary of the Yellowstone River, approximately long, in northwestern Wyoming and south central Montana in the United States. The entire river is located within Yellowstone National Park...
    
    
  • Lamar River
    Lamar River
    The Lamar River is a tributary of the Yellowstone River, approximately 40 miles long, in northwestern Wyoming in the United States. The river is located entirely within Yellowstone National Park.-History:...
    
    
    • Slough Creek
      Slough Creek (Wyoming)
      Slough Creek is a tributary of the Lamar River, approximately 25 mi long, in Montana and Wyoming in the United States.-History:...
      
      
  • Clarks Fork of the Yellowstone River
  • Wind River
    Wind River (Wyoming)
    The Wind River is the name applied to the upper reaches of the Bighorn River in Wyoming in the United States. The Wind River is long. The two rivers are sometimes referred to as the Wind/Bighorn.-Course:...
    
    /Bighorn River
    Bighorn River
    The Bighorn River is a tributary of the Yellowstone, approximately long, in the western United States in the states of Wyoming and Montana. The river was named in 1805 by fur trader François Larocque for the Bighorn Sheep he saw along its banks as he explored the Yellowstone River.The upper...
    
    
    • Little Bighorn River
      Little Bighorn River
      The Little Bighorn River is a tributary of the Bighorn River in the United States in the states of Wyoming and Montana. The Battle of the Little Bighorn was fought on its banks in 1876, as well as the Battle of Crow Agency in 1887....
      
      
    • Shoshone River
      Shoshone River
      The Shoshone River is long river in northern Wyoming in the United States. Its headwaters are in the Absaroka Range in Shoshone National Forest. It ends when it runs into the Big Horn River near Lovell, Wyoming. Cities it runs near or through are Cody, Powell, Byron, and Lovell. Near Cody, it...
      
      
    • Greybull River
      Greybull River
      The Greybull River is a tributary of the Big Horn River, approximately long in northern Wyoming in the United States. The river was reportedly named for a white buffalo that had been seen on its banks. Native Americans consider the appearance of a white buffalo a powerful omen.The river rises...
      
      
    • Shell Creek
      Shell Creek
      Shell Creek is a tributary of the Bighorn River, approximately 50 mi long, in Wyoming in the United States. Lying entirely within Big Horn County, Shell Creek begins above the Shell Lakes in the Bighorn Mountains...
      
      
    • Nowood River
      Nowood River
      The Nowood River is a river in the U.S. state of Wyoming. The river rises in the Bridger Mountains on the southeastern side of the Bighorn Basin. The stream runs north through the foothills of the Bighorn Mountains and past the town of Ten Sleep where it is joined by Tensleep Creek...
      
      
      • Tensleep Creek
        Tensleep Creek
        Tensleep Creek is a stream that originates in the Cloud Peak Wilderness Area in the U.S state of Wyoming. Lakes that are along the river are Misty Moon, Lake Marion and Lake Helen. Tensleep Creek is a tributary of the Nowood River which then flows into the Bighorn River....
        
        
      • Paint Rock Creek
  • Tongue River
    • Big Goose Creek (near Sheridan
      Sheridan, Wyoming
      Sheridan is a city in Sheridan County, Wyoming, United States. The 2010 census put the population at 17,444 and a Micropolitan Statistical Area of 29,116...
      
      )
      • Little Goose Creek
        Little Goose Creek
        Little Goose Creek originates on the east slope of the Big Horn Mountains in north-central Wyoming. After dropping over 4,000 feet and entering a steep canyon, the creek flows out of the Big Horn Mountains and into the Powder River Basin. Passing by the Bradford Brinton Memorial Museum and Art...
        
         (near Sheridan
        Sheridan, Wyoming
        Sheridan is a city in Sheridan County, Wyoming, United States. The 2010 census put the population at 17,444 and a Micropolitan Statistical Area of 29,116...
        
        )
    • Little Tongue River (Dayton
      Dayton, Wyoming
      Dayton is a town in Sheridan County, Wyoming, United States. The population was 678 at the 2000 census.-Geography:Dayton is located at the confluence of the Tongue River and The Little Tongue River. It is on US Highway 14, just east of the Big Horn Mountains.-Demographics:As of the census of 2000,...
      
      )
  • Powder River
    Powder River (Montana)
    Powder River is a tributary of the Yellowstone River, approximately long in the southeastern Montana and northeastern Wyoming in the United States. It drains an area historically known as the Powder River Country on the high plains east of the Bighorn Mountains.It rises in three forks in eastern...
    
    
    • Clear Creek
      • Rock Creek
        Rock Creek (Clear Creek)
        Rock Creek is a freestone stream in the northeastern part of the U.S. state of Wyoming. It is a tributary of Clear Creek, within the Powder River watershed. Its source is located in the Rock Creek Roadless Area. According to the U.S. Geological Survey, Rock Creek drains approx...
        
        
• Little Missouri River
  Little Missouri River (North Dakota)
  The Little Missouri River is a tributary of the Missouri River, 560 mi long, in the northern Great Plains of the United States. Rising in northeastern Wyoming, in western Crook County about west of Devil's Tower, it flows northeastward, across a corner of southeastern Montana, and into South Dakota...
  
  
• Cheyenne River
  Cheyenne River
  The Cheyenne River is a tributary of the Missouri River in the U.S. states of Wyoming and South Dakota. It is approximately 295 mi long and drains an area of...
  
  
  • Belle Fourche River
    Belle Fourche River
    The Belle Fourche River is a tributary of the Cheyenne River, approximately long, in the U.S. states of Wyoming and South Dakota. It is part of the Mississippi River watershed via the Cheyenne and Missouri rivers....
    
    
• Niobrara River
  Niobrara River
  The Niobrara River is a tributary of the Missouri River, approximately long, running through the U.S. states of Wyoming and Nebraska. The river drains one of the most arid sections of the Great Plains, and has a low flow for a river of its length...
  
  
• North Platte River
  North Platte River
  The North Platte River is a major tributary of the Platte River and is approximately long counting its many curves, It travels about distance. Its course lies in the U.S...
  
  
  • Encampment River
    Encampment River
    The Encampment River is a tributary of the North Platte River. The river's source is east of Buck Mountain in the Park Range of Jackson County, Colorado. The river flows north and passes through the town of Encampment, Wyoming before its confluence with the North Platte....
    
    
  • Medicine Bow River
    Medicine Bow River
    The Medicine Bow River is a tributary of the North Platte River, in southern Wyoming in the United States.It rises in the Snowy Range, flowing out of the North Gap Lake, in southeastern Carbon County...
    
    
    • Rock Creek
      Rock Creek (Medicine Bow River)
      Rock Creek is a river in the south central part of the U.S. state of Wyoming. It empties into the Medicine Bow River. The drainage basin of Rock Creek starts high on the north side of the Snowy Range. At the northern base of the range, Rock Creek runs through the town of Arlington and continues on...
      
      
    • Little Medicine Bow River
      Little Medicine Bow River
      The Little Medicine Bow River is a tributary of the Medicine Bow River in Wyoming. The basin of the Little Medicine Bow includes the northern slopes of the Shirley Mountains as well Shirley Basin. The Little Medicine Bow reaches its confluence with the Medicine Bow River northwest of the town...
      
      
  • Sweetwater River
    Sweetwater River (Wyoming)
    The Sweetwater River is a tributary of the North Platte River, long, in the U.S. state of Wyoming. Its waters eventually reach the Atlantic Ocean. The Sweetwater rises in southwestern Fremont County, at the continental divide near South Pass Wyoming, on the southern end of the Wind River Range...
    
    
  • Laramie River
    Laramie River
    The Laramie River is a tributary of the North Platte River, approximately long, in the U.S. states of Colorado and Wyoming.It rises in northern Colorado, in the Roosevelt National Forest in the Front Range, in western Larimer County...
    
    
    • Little Laramie River
      Little Laramie River
      The Little Laramie River, often referred to simply as the Little Laramie, is one of the largest tributaries of the Laramie River, flowing . The Little Laramie is formed by the merger of three smaller streams, the North Fork, the Middle Fork and the South Fork of the Little Laramie...
      
      
      • North Fork Little Laramie River
        • Libby Creek
          Libby Creek
          The Libby Creek is a stream on the eastern slopes of the Snowy Range in southern Wyoming. Libby Creek starts as it flows out of Libby Lake and flows violently down the east side of the Snowies until it empties into the North Fork of the Little Laramie....
          
          
      • Middle Fork Little Laramie River
      • South Fork Little Laramie River
    • North Laramie River
      North Laramie River
      The North Laramie River is a tributary of the Laramie River, long, in southeastern Wyoming in the United States.It rises in the Medicine Bow National Forest in the Laramie Mountains, in northern Albany County. It flows south, then east-northeast and east, emerging from the mountains and joining...
      
      
    • Chugwater Creek
      Chugwater Creek
      Chugwater Creek is a tributary of the Laramie River, long, in southeastern Wyoming in the United States.It rises in the Laramie Mountains in eastern Albany County, northeast of Laramie. It flows northeast, emerging from the mountains and flowing past Chugwater, where it turns north-northwest,...
      
      

Colorado River

Colorado River

The Colorado River , is a river in the Southwestern United States and northwestern Mexico, approximately long, draining a part of the arid regions on the western slope of the Rocky Mountains. The watershed of the Colorado River covers in parts of seven U.S. states and two Mexican states...

 watershed

• Green River
  Green River (Utah)
  The Green River, located in the western United States, is the chief tributary of the Colorado River. The watershed of the river, known as the Green River Basin, covers parts of Wyoming, Utah, and Colorado. The Green River is long, beginning in the Wind River Mountains of Wyoming and flowing...
  
  
  • Big Sandy River
    Big Sandy River (Wyoming)
    right|thumb|300px|Big Sandy Creek, WyomingThe Big Sandy River is a tributary of the Green River in Wyoming in the United States....
    
    
  • Blacks Fork
    Blacks Fork
    Blacks Fork is a tributary of the Green River in Utah and Wyoming. The river rises on the northern side of the Uinta Mountains as the combination of three streams draining the area around Tokewanna Peak near the Utah-Wyoming border...
    
    
    • Smiths Fork
    • Hams Fork
  • Yampa River
    • Little Snake River
      Little Snake River
      The Little Snake River is a tributary of the Yampa River, approximately 150 mi long, in southwestern Wyoming and northwestern Colorado in the United States....
      
      
      • Roaring Fork Little Snake River
        Roaring Fork Little Snake River
        Roaring Fork Little Snake River is a tributary of the Little Snake River in Colorado and Wyoming. It flows from a source in the Medicine Bow National Forest of Carbon County, Wyoming to a confluence with the Little Snake River in Routt County, Colorado....
        
        
      • North Fork Little Snake River
        North Fork Little Snake River
        North Fork Little Snake River is a tributary of the Little Snake River in Colorado and Wyoming. It flows from a source in the Medicine Bow National Forest of Carbon County, Wyoming to a confluence with the Middle Fork Little Snake River in Routt County, Colorado that forms the Little Snake...
        
        
  • New Fork River
    New Fork River
    The New Fork River is the uppermost major tributary of the Green River in Wyoming, flowing about entirely within Sublette County. It drains an arid farming region of southwestern Wyoming south of the Wind River Range.-Course:...
    
    

Columbia River

Columbia River

The Columbia River is the largest river in the Pacific Northwest region of North America. The river rises in the Rocky Mountains of British Columbia, Canada, flows northwest and then south into the U.S. state of Washington, then turns west to form most of the border between Washington and the state...

 watershed

• Snake River
  Snake River
  The Snake is a major river of the greater Pacific Northwest in the United States. At long, it is the largest tributary of the Columbia River, the largest North American river that empties into the Pacific Ocean...
  
  
  • Henrys Fork (ID)
    • Fall River
      Fall River (Wyoming, Idaho)
      Fall River rises on the Madison and Pitchstone plateaus in the southwest corner of Yellowstone National Park, Wyoming and flows approximately to its confluence with the Henrys Fork of the Snake River near Ashton, Idaho...
      
      
  • Salt River
    Salt River (Wyoming)
    The Salt River is an river draining a valley in Lincoln County in western Wyoming. It is named for several exposed beds of salt and briny salt springs of up 60% pure salt in Idaho that drains into the Salt River via Stump Creek. The Salt River valley was a popular destination for Indians and later...
    
    
    • Swift Creek
    • Cottonwood Creek
  • Greys River
    Greys River
    The Greys River is a tributary of the Snake River, flowing through western Wyoming in the United States. The river is about long, starting high up in the Wyoming Range, south of the town of Alpine in Lincoln County. The river eventually flows into the Snake River in the Snake River Canyon,...
    
    
    • Little Greys River
  • Hoback River
    Hoback River
    The Hoback River, also called the Fall River, is an approximately -long tributary of the Snake River in the U.S. state of Wyoming. It rises in the southern Rocky Mountains of Wyoming and flows northeast through the Teton National Forest, before turning northwest to join the Snake just downstream of...
    
    
    • Granite Creek
    • South Fork Hoback River
  • Gros Ventre River
    Gros Ventre River
    The Gros Ventre River is a tributary of the Snake River in the state of Wyoming. It rises in the Gros Ventre Wilderness in western Wyoming, and joins the Snake River in the Jackson Hole valley. In 1925, the massive Gros Ventre landslide dammed the river and formed Lower Slide Lake...
    
    
  • Lewis River
    Lewis River (Wyoming)
    The Lewis River is an tributary of the Snake River. The entire course of the river is located within the boundaries of Yellowstone National Park in Wyoming. The river is named for Meriwether Lewis, commander of the Lewis and Clark Expedition....
    
    
  • Heart River
    Heart River (Wyoming)
    The Heart River is a river in the U.S. state of Wyoming, tributary to the Snake River. Its entire course is contained inside Yellowstone National Park. The river rises on the Continental Divide, in the Rocky Mountains, a few miles southeast of Yellowstone Lake...
    
    
  • Wolverine Creek
  • Plateau Creek

Great Salt Lake

Great Salt Lake

The Great Salt Lake, located in the northern part of the U.S. state of Utah, is the largest salt water lake in the western hemisphere, the fourth-largest terminal lake in the world. In an average year the lake covers an area of around , but the lake's size fluctuates substantially due to its...

 watershed

• Bear River (Utah)
  Bear River (Utah)
  The Bear River is a river, approximately long, in southwestern Wyoming, southeastern Idaho, and northern Utah, in the United States. The largest tributary of the Great Salt Lake, it drains a mountainous area and farming valleys northeast of the lake and southeast of the Snake River Plain...