Bradford Island

Bradford Island. Located within the Columbia River in the Pacific Northwest, it is a significant site within the Bonneville Dam complex. The island has played roles in regional hydroelectric power generation, World War II industrial activity, and has become a focal point for major environmental remediation efforts led by federal agencies.

Geography

Situated in the Columbia River Gorge, the island lies adjacent to the Oregon shore near Cascade Locks, directly associated with the structures of Bonneville Dam. The United States Army Corps of Engineers manages the surrounding federal lands, which include the dam's spillway and navigation lock. The local terrain is characterized by basalt cliffs and a temperate rainforest climate, influenced by its position in the Cascade Range. Its location places it within the traditional territories of indigenous peoples, including bands of the Yakama Nation and Confederated Tribes of Warm Springs.

History

The island's modern history is inextricably linked to the construction of Bonneville Dam, a New Deal project authorized under the Rivers and Harbors Act and completed in the late 1930s. During World War II, the U.S. Army utilized facilities on the island for equipment maintenance and storage, supporting the Portland shipyards and the Hanford Site. Post-war, operations by the Army Corps of Engineers continued, involving the repair of heavy machinery like Caterpillar D7 tractors and electrical equipment. These industrial activities, largely unregulated at the time, led to the disposal of hazardous substances directly into the surrounding environment.

Environmental issues

The island is a designated Superfund site on the National Priorities List, administered by the Environmental Protection Agency in coordination with the Army Corps of Engineers. Primary contaminants include polychlorinated biphenyls (PCBs), polycyclic aromatic hydrocarbons (PAHs), and heavy metals like lead and mercury, which originated from historical waste disposal practices. These pollutants have accumulated in the sediment and biota, leading to consumption advisories for resident white sturgeon and impacting culturally significant resources for the Confederated Tribes of the Umatilla Indian Reservation. A major dredging and capping operation has been undertaken to isolate contaminated materials, a project closely monitored by the Oregon Department of Environmental Quality.

Transportation

Primary access is via the dam complex itself, connected to Interstate 84 in Oregon. The island is integral to river navigation, hosting one of the Bonneville Lock chambers that allow passage for barges and recreational vessels between the river's upper and lower pools. The adjacent Bonneville Fish Hatchery and Bradford Island Visitor Center are accessible by road from the Washington side via Washington State Route 14. The Columbia River Highway Historic District provides scenic viewpoints of the area.

See also

* Bonneville Dam * Superfund * Columbia River Gorge National Scenic Area * Hanford Site * Confederated Tribes of Warm Springs

Category:Islands of Oregon Category:Columbia River Category:Superfund sites