The West Okaw River is a significant tributary of the Kaskaskia River in central Illinois. Originating in Piatt County, it flows southward through Macon and Moultrie counties before joining the Kaskaskia River in Lake Shelbyville. This confluence forms a distinctive arm of the lake, known as the West Okaw River Arm or Lake Shelbyville Arm. The river's journey through the Illinois prairie creates a unique paddling experience, culminating in the expansive waters of Lake Shelbyville. While the exact length of the river is not specified, the Lake Shelbyville Arm section alone stretches approximately 15 miles, offering ample exploration opportunities.

Paddling on the West Okaw River is primarily a flatwater experience, especially in its lower reaches within Lake Shelbyville. This makes it suitable for paddlers of all skill levels, from beginners to experienced kayakers and canoeists. The lake section provides a versatile environment with quiet coves and open water, allowing paddlers to tailor their trips to their preferences and abilities.

The best times for paddling are typically from late spring through early fall, with May through October being particularly favorable for both recreation and fishing. Catfish angling is especially productive during this period, particularly on the flats north of the confluence with the Kaskaskia River.

The West Okaw River and its surrounding ecosystem support a diverse array of wildlife. Paddlers may encounter bald eagles, wild turkeys, foxes, and various waterfowl species, including Canadian geese and several duck varieties. The river's banks and the lake's shoreline are lined with typical Illinois riparian vegetation, providing habitat for numerous species.

Key landmarks include the confluence with the Kaskaskia River and the expansive waters of Lake Shelbyville. The lake's shape, resembling a lopsided Y, with the West Okaw forming one of the upper arms, is a distinctive feature of the landscape. Access points for paddling are numerous along the Lake Shelbyville Arm, though specific locations are not detailed. The nearby towns of Sullivan, Shelbyville, and Findlay offer services and accommodations for visitors to the area.

Historically, the West Okaw River has played a role in flood control and water management for the region. The creation of Lake Shelbyville in 1970 significantly altered the river's lower course but also enhanced recreational opportunities.

Safety considerations include being aware of weather conditions, as the open waters of Lake Shelbyville can become choppy in high winds. Paddlers should also be mindful of motorized boat traffic, especially in the main body of the lake.

For those interested in multi-day trips, the Lake Shelbyville Arm offers the potential for extended exploration, with camping available at various sites around the lake. This section of the West Okaw River provides a perfect blend of river and lake paddling, making it a unique destination for water enthusiasts in central Illinois.