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Olympic National Park
Historic Anadromous Fish Runs in the Elwha
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Scott Church | After restoration of the Elwha River is complete, the pristine waters have the potential of supplying optimum habitat for the thousands of salmonids that return each year. |
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Historical Range:
Before construction of the dams, native fish used the Elwha River and its diverse habitats for spawning. The inaccessibility created by the dams has seriously diminished all 10 native Elwha River anadromous fish runs, including all five types of Pacific salmon, as well as native char (bull trout and dolly varden), winter and summer-run steelhead, and sea-run cutthroat trout. In addition, sediment has been caught behind the dams, preventing gravel and debris from entering the lower 5 miles of the river, and thus rendering the available reaches practically unsuitable for the spawning of particular populations of native fish.
Historic Range Diagrams:
Bull trout
Chinook Salmon
Chum Salmon
Coho Salmon
Pink Salmon
Sockeye Salmon
Steelhead
Other Useful Links:
Map of the Elwha River Watershed
Potential Range after dam removal
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Anadromous Fish Info regarding identification, spawning, and conservation of anadromous fish in the park more... | | The Salmon Life Cycle Click here to learn more about the life cycle of Pacific salmon! more... | |
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Did You Know?
That endemic Olympic snow moles are scurrying beneath this blanket of snow? Olympic National Park's Hurricane Ridge is blanketed with over ten feet of snow for most of the winter, providing water for summer and protection for snow moles in winter.
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Last Updated: February 02, 2009 at 18:45 EST |