North Arm Trail

North Arm Trail loops along the shoreline of the Banks Lake north arm adjacent to Steamboat Rock State Park, providing an easy, flat hike through classic eastern Washington sage-steppe habitat with continuous lake views and excellent wildlife observation opportunities. Banks Lake, created as part of the Columbia Basin irrigation project, has developed into an outstanding recreation lake and wildlife area over the decades since its creation, and the North Arm area is particularly productive for birding and nature observation. The trail traverses open sage-steppe terrain where big sagebrush, rabbitbrush, and bunchgrass dominate the upland vegetation, transitioning to riparian scrub and cattail marsh near the water's edge. White pelicans, double-crested cormorants, and great blue herons are among the large waterbirds commonly observed on the lake, while cinnamon teal, Canada geese, and various diving ducks use the shallower areas near shore. Mule deer regularly visit the lakeshore in the morning and evening hours. The gentle terrain and accessible trailhead make this route suitable for families, less experienced hikers, and visitors who want to enjoy the Grand Coulee scenery without the demanding summit ascent. The dramatic basalt walls of the coulee provide a spectacular backdrop throughout the walk, and the flat water surface of Banks Lake mirrors the surrounding cliffs on calm mornings. Combine with the summit hike for a full day of exploration at this extraordinary park.