! About Streams 



What is a Watershed? 



A loatershed is the total land area being 

 drained by a particular stream or river. 



Montana has 16 major watersheds (also '^* 

 called river basins), which are pictured 

 below. These ivatersheds contain many, 

 many smaller watersheds. 



Montana's Major 

 Watershed Basins 



Koolenai{ ^'-^O'T 



-^ \Flalhead\ ^"""' 



Lower \ I 



Clark l/\ A, 



Fork ~l ^-""^^T-, Missoiiri- 



\ } Upper p I""- 



■^ \ Clark f ^"""' 



1 } Fork I 



iMwer 

 Missouri 



f Middle 

 ( Missouri 





iMwer V 

 Yellowstone 



Many smaller watersheds, 

 such as the Musselshell 

 River Basin shown beloiv, 

 make up the huge Missouri 

 River watershed. 



All streams within a 

 watershed loork together to 

 move water and sediment 

 downstream. 



