Big Muddy River River, Casey Creek, the Middle Fork of the Big Muddy and Crab Orchard Creek. Smaller tributaries include Town Creek, Kinkaid Creek, and Shoal Creek. The basin includes Kinkaid Lake, Rend Lake, Crab Orchard Lake, Devil's Kitchen Lake, Little Grassy Lake and Cedar Lake. The northern limit of the watershed is north of Kell, about into Marion County. This is on Casey Creek, which might be properly considered the main reach of the river. Cities and towns in the Big Muddy watershed include: The Big Muddy drains areas of the following counties: Big Muddy River The Big Muddy River is a
Big Wood River receives the tributary streams of Warm Springs Creek and Trail Creek. Below Ketchum, it is joined by the East Fork Wood River at Gimlet before passing by the small cities of Hailey and Bellevue. Continuing south, the river enters the Wood River Valley, the northern part of Magic Valley, after which it flows into Magic Reservoir. A tributary stream, Camas Creek, joins the river in Magic Reservoir. Below Magic Dam, the Big Wood River enters Lincoln County, passing by many lava beds and irrigation canals before entering Gooding County. Just west of Gooding, the Big Wood River joins the Little