With the construction of the High Arrow Dam in 1968 (renamed the Hugh Keenleyside Dam in 1969) the area north of the city of Castlegar to the ghost town of Arrowhead was flooded. Many people were displaced when the water began to rise in 1967 to make way for the second Columbia River Treaty Dam that was built to control the water levels downstream from Castlegar. The city of Trail and all riverside communities below the Canada-US border were spared the threat of continued flooding during the spring melts with the construction of this dam. The water storage also maximized power production downstream at large American dams located along the lower Columbia River. The loss of arable land in the Arrow Lakes Reservoir was devastating to the local population and remains a source of contention to this day.