2020 Map of Bonneville Dam

About this map

The Bonneville Dam complex anchor this reach of the Columbia River, showing the intricate engineering of the Entrance to Bonneville Lock and the division of the river around Bradford Island and Robins Island. On the Washington side, the town of Stevenson serves as the seat of government, marked by the Skamania County Courthouse, while the Oregon shore is defined by the historic city of Cascade Locks. The landscape is a mix of high-relief terrain and deep river history, containing early settlement sites like Fort Rains and Moffetts Hot Springs. Local genealogy and land use are evidenced by the Iman Cem and the Freddie Masterson Grave, while the Pacific Crest National Scenic Trail winds through the protected lands of the Gifford Pinchot National Forest. Significant river crossings, including the iconic Bridge of the Gods, connect the two states amidst a backdrop of geological landmarks like Table Mtn and Hamilton Mtn.