The Columbia River in the United States is a vast and varied waterway for paddlers, stretching 1,200 miles from its headwaters to the Pacific Ocean near Astoria, Oregon. The river's character changes dramatically along its course, from the long, intact wetlands of its upper sections in British Columbia and Washington to the massive reservoirs like Lake Roosevelt and the dramatic, steep-walled Columbia River Gorge. Paddling the entire length is a multi-week expedition requiring significant planning, including portaging around 14 major dams. For day trips, numerous access points exist. The Columbia River Gorge area offers several launch sites, including a private beach and protected cove at Herman Creek in Cascade Locks, Oregon, which provides calm conditions even on windy days. Other noted launch facilities include Chinook Landing Marine Park, the largest public boating facility on the river with six launching lanes. Paddlers should be prepared for strong and persistent winds, particularly on the large reservoirs and open stretches of the river, which can create choppy waters and frustrating headwinds that severely impede progress. The river is also a major shipping corridor, so paddlers must be vigilant for boat traffic. Wildlife sightings are common, with bald eagles, herons, and ospreys frequently observed, especially in the wetland areas. Summer brings very high temperatures, making hydration and cooling off in the water essential, though late-summer algae blooms can occur in some slower-moving sections like Horsethief Lake. The best season for extended trips is summer, though wind and heat are significant factors. The river holds deep historical significance, with evidence of human activity dating back over 11,000 years, and it formed a key part of the Lewis and Clark expedition route.