The Kettle River is a significant waterway in northeastern Washington, originating in British Columbia before flowing south into the United States. It re-enters Washington at Laurier in Stevens County, continuing its journey southward through Ferry County before joining the Columbia River near Boyds. This transboundary river forms an important part of the Upper Columbia River watershed.

For paddlers, the Kettle River offers an exciting mix of whitewater and scenic flatwater sections. The most popular whitewater run is the Ferry/Stevens County Section, a 12.8-mile stretch from Orient to Barstow. This Class II-III section provides thrilling rapids suitable for intermediate kayakers and rafters, featuring the picturesque Kettle River Gorge. The river's difficulty ranges from calm flatwater to challenging Class III rapids, requiring varying levels of skill depending on the section and water levels. Paddlers should have solid whitewater experience and rescue skills before attempting the more difficult stretches.

Spring snowmelt typically provides the best water levels for whitewater enthusiasts, usually peaking in May and early June. Summer offers more opportunities for flatwater paddling and fishing as water levels drop.

The Kettle River valley supports a diverse ecosystem, with dense forests of black spruce, fir, birch, aspen, and pine lining its banks. Wildlife such as deer, elk, and various bird species can often be spotted from the water. Key landmarks include the dramatic rock formations of the Kettle River Gorge and the historic town of Curlew, which offers a glimpse into the region's mining past. The river passes through remote and rugged terrain, providing a true wilderness experience.

Main access points include Orient (put-in) and Barstow (take-out) for the popular whitewater section. The nearby towns of Republic and Kettle Falls offer services for paddlers planning their trips.

The Kettle River holds significant cultural importance to indigenous peoples and played a role in early European exploration and settlement of the region. Today, it remains a vital resource for local communities and a draw for outdoor enthusiasts.

Safety considerations include fluctuating water levels, remote stretches with limited cell coverage, and the presence of strainers and other river hazards. Paddlers should always check current conditions and be prepared for self-rescue. While most trips on the Kettle are day runs, multi-day expeditions are possible for experienced paddlers willing to camp along the riverbanks, offering a chance to fully immerse in the wild beauty of northeastern Washington.