Provide unobstructed adult and juvenile fish passage. The physical processes include sediment and nutrient transport, hydrology, and temperature regimens. Also, recovery of inundated habitat. Juvenile outplanting and natural recolonization would both be utilized to re-build fish populations. The groups involved are Federal agencies and the Elwha S'Klallam Tribe.
Fish returns year-round and much larger numbers of fish.
Fish carcasses would add to the food supply for birds and mammals, thus increasing wildlife numbers. Sport fishing opportunities would increase. Optiminal use of the entire watershed. Many benefits to the Pacific Northwest accrue from these structures, as well as costs. Scope of the project is large and complex.