Final Answer:
The construction of the Elwha River dams a century ago significantly altered the sediment budget of Ediz Hook by reducing the natural sediment supply. The dams hindered the downstream transport of sediment, leading to erosion and sediment starvation along the shoreline of Ediz Hook.
Step-by-step explanation:
The construction of the Elwha River dams around a century ago had a notable impact on the sediment dynamics of the surrounding areas, including Ediz Hook. These dams impeded the natural flow of sediment downstream, preventing the regular transport of sediments that would naturally replenish coastal areas like Ediz Hook.
Consequently, the area experienced erosion and a shortage of sediment, disrupting the natural sediment budget and leading to changes in shoreline dynamics. Removal of these dams in recent years has aimed to restore the natural sediment flow and revive the ecological balance in the region.