The Lewis and Clark expedition traveled the final 450 miles of their journey to the Pacific Ocean entirely by water, the last segment along the Columbia River. Beginning near the Bonneville Dam, the lower Columbia has been designated the Lewis and Clark Columbia River Water Trail in recognition of its rich historical significance. With this authoritative guide, today's water-traveling explorer -- or motorist, bicyclist, or hiker -- can discover the unique landscapes and history of the lower Columbia and imagine what this awesome, untamed terrain may have looked like during the time of Lewis and Clark.