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Impacts of Dam Removal on the Macrobenthos of the Elwha River Delta
For almost a century, the Elwha River has been constrained by the Elwha and Glines Canyon dams, which have severely restricted the transport of fine sediment downriver. The dams are currently undergoing removal; it is the largest such project ever attempted in the United States. The purposes of this experiment were to ...
Effects of the Elwha River Dam Removal Project on Suspended-Sediment Concentrations in the River and Nearshore Environment
Suspended-sediment concentrations (SSCs) in the Elwha River and nearshore environment off the river mouth were observed in order to determine the effects of the Elwha dam removal project on sediment supply to the river and marine environment. River gauge data over a 4-month period of dam removal from November 2011 to March ...
Nutrient Concentrations and Distributions within the Lower Elwha River during Dam Removal
The objective of this research was to characterize nutrient concentrations and distributions throughout the Elwha River watershed, focusing on dissolved inorganic nitrogen (DIN), phosphorus and silicic acid. Previous research has indicated that the Elwha River is oligotrophic, however with the removal of the dams comes the ...
Sediment Deposition on the Elwha Submarine Delta: Changes in Substrate Composition and Conditions for Fine-Grain Deposition
The coarse Elwha River Delta is now exposed to an influx of fine-grained sediment from the removal of two dams. The coarse substrate of the delta and energetic oceanographic processes will result in complicated sediment deposition patterns. This study used grain-size distribution and water velocity data compared with prior ...