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
Muddy River (Washington) Muddy River Picnic Site, next to the river and to Forest Road 25 in the Gifford Pinchot National Forest. Trails cross the river on its upper reaches. Muddy River originates at about the level on the southeast side of Mount St. Helens in the Cascade Range. The river source is within Mount St. Helens National Volcanic Monument and Gifford Pinchot National Forest. Shoestring Glacier is to the right and East Dome is to the left. Flowing southeast down steep slopes, the river curves sharply to the northeast just beyond the level of the volcano. Here the river crosses Forest Road