[4] It drains part of the western side of the Cascade Range east of Roseburg, between the North and South Umpqua.

[4] Little River rises north of Quartz Mountain in eastern Douglas County in the Umpqua National Forest.

It flows west-northwest and joins the North Umpqua from the south at Glide, approximately 12 miles (19 km) east-northeast of Roseburg.

[2] Little River begins north of Quartz Mountain and east of Hemlock Lake in the Umpqua National Forest of southwestern Oregon.

[4] For much of its length, Little River is paralleled by Forest Road 27, which is gravel along the upstream stretches but becomes paved for the lowermost 2 miles (3 km).

[8] The heavily forested Little River watershed, which extends from the western Cascades to the Umpqua Valley hills, includes a variety of conifers, hardwoods, and prairie vegetation.

[5] Sea-going fish species in the watershed include chinook and coho salmon, steelhead, Pacific lamprey, and coastal cutthroat trout.

Little River and Cavett Creek provide good spawning habitat for coho salmon and other migrating species.