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Table 9-1.
Status and Recent Population Trends of Nehalem Basin Anadromous
Salmonids |
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Recent |
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Species |
Status |
Population |
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Trends |
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Winter Steelhead |
little hatchery influence, |
stable or increasing |
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one of Oregon's healthiest |
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populations on the Salmonberry |
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ESA Listing: Candidate for |
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Oregon Coast |
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Coho salmon |
not present or severely depressed |
declining |
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in lower mainstem, depressed |
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wild coho in mid and upper
reaches, |
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heavily influenced by hatchery
fish |
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ESA Listing: Threatened |
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High conservation significance |
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due to worse conditions in basins |
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to the north and south |
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Chum salmon |
possible heavy predation by
hatchery |
possibly declining |
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coho, low recovery rates since
the |
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1950's, poor ocean productivity |
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conditions may be contributing |
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ESA Listing: Not warranted at this |
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time |
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Chinook |
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Summer |
very depressed, spawning habitat |
probably declining |
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limited to Humbug Creek and Rock |
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Creek |
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Fall |
healthy stocks in large
tributaries |
declining |
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of lower basin, population
increased |
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between 1950's and 1985, gradual |
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decline since 1985, little
hatchery |
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influence |
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ESA Listing: Not warranted at this |
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time |
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Sea-run cutthroat trout |
data lacking, but widespread
decline |
declining |
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is evident |
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ESA Listing: Proposed threatened |
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listing, final decision expected |
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April, 2000 |
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