Editing Musselshell River (section)

==Geography==
[[File:Bush Banks Selkirk2.jpg|thumb|right|Banks of the Musselshell River near Selkirk.]]
The terrain varies from the mountainous [[island range]]s where it originates to prairie.{{r|mtfish1}} It is fed largely by snowmelt and has its highest flow rates in the spring and early summer. The Musselshell River Basin, including tributaries, drains {{convert|108268|acre|km2|1}}.{{r|recl}} The South Fork has much brush, gravel bars, and clear water. The North Fork has [[willow]] trees and undercut banks. The Musselshell is about {{convert|60|ft|m|sigfig=1}} wide at its confluence of the two forks. Three reservoirs built in the 1930s help control the river's flow: Bair Reservoir on the North Fork, Martinsdale Reservoir near the confluence, and Deadman's Basin on the main river between [[Shawmut, Montana|Shawmut]] and [[Ryegate, Montana|Ryegate]].{{r|hwy}}{{r|recl}} The river becomes wider in the {{convert|50|mi|km}}  before Roundup. [[Honeysuckle]], [[Rosa acicularis|wild rose]], willow, and [[Populus sect. Aigeiros|cottonwood]] are common in this section. The river is about {{convert|100|ft|m}}  wide in its last {{convert|90|mi|km}}, with increased choppiness and flow rate. The relatively more arid climate in this section results in less vegetation, more livestock grazing, and poorer soil.{{r|mtfish1}} Additional tributaries of the Musselshell include: Middle Fork, Bozeman Fork, Dry Fork, American Creek Fork, Big Elk Creek, Careless Creek, Cottonwood Creek, Flat Willow Creek, Hopley Creek, Spring Creek, Swimming Woman Creek, and Willow Creek.{{r|mra}}