Bradbury Slough is a coastal slough on the Columbia River near Longview, Washington, and is part of a complex of islands including Crims and Gull Islands. It is a saltwater feature with a tidal range that can exceed five feet, making tide planning essential. The slough is accessible from several launch points, with Willow Grove Park near Longview being a frequently used put-in and take-out. Another access point is the Abernathy Creek Boat Ramp in Washington, which requires crossing the main shipping channel. Paddling here involves navigating significant currents, with speeds noted around two knots, and careful timing with the tides is required to gain current assistance. The area is exposed to wind and weather from the west, which can create chop, though the interior sloughs offer sheltered conditions. A major hazard is commercial shipping traffic in the main Columbia River channel, which must be crossed to reach the slough from northern launches. The slough itself is shallow in places, with a wing dam marked by a red daymark at its entrance; paddlers should watch their depth. The aesthetic is a mix of serene, sheltered back channels with sandy beaches and views of industrial development, including a small power plant. Wildlife sightings commonly include white pelicans, egrets, eagles, and ospreys. Primitive camping is available on nearby Quill Island. The slough is suitable for intermediate paddlers due to the currents, potential wind, and channel crossings, and can be paddled year-round with appropriate immersion protection, as water temperatures can be in the 30s (°F) in winter.