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spawning <strong>and</strong> contribute significant marine derived biomass to the freshwater <strong>and</strong> terrestrial<br />

ecosystems.<br />

Escapement Data<br />

Of the 167 salmon bearing streams on the North Coast, 137 have supported runs <strong>of</strong> chum salmon.<br />

Of these, 27 are identified as questionable stocks (fewer than 4 records >25 spawners). A complete<br />

list <strong>of</strong> all chum streams is included in Appendix I <strong>and</strong> escapement trends are presented in Section<br />

3.2.2. Table 4 lists those streams that have average escapements >2000 fish. Historically, some<br />

streams have had substantially large escapements including:<br />

• Ecstall River, 75,000 in 1988<br />

• Stagoo Creek, 70,000 in 1974<br />

• Quall River, 65,000 in 1988<br />

• Kshwan River, 50,000 in 1993<br />

Table 4. Max <strong>and</strong> Mean escapement data (1950-2001) for chum streams in the NC LRMP area that have average<br />

escapements >2000 fish.<br />

Coho Salmon<br />

Stream Max Mean<br />

Stagoo Creek 70,000 9,825<br />

Ecstall River 75,000 9,370<br />

Kshwan River 50,000 8,381<br />

Quaal River 65,000 7,423<br />

Khutzeymateen River 35,000 6,623<br />

Toon River 40,000 6,294<br />

Kiltuish River 35,000 5,777<br />

Kitsault River 15,000 4,865<br />

Illiance River 22,000 3,721<br />

Kingkown Inlet System 13,000 2,796<br />

Turn Creek 35,000 2,690<br />

Eagle Creek 15,000 2,647<br />

Kwinamass River 12,000 2,203<br />

Kdelmashan Creek 7,500 2,007<br />

Description<br />

Coho salmon grow in length to approximately 38 inches (98 cm) <strong>and</strong> weigh up to 31 pounds (14 kg),<br />

however, mature adults are usually between 6 <strong>and</strong> 12 pounds (2.7-5.4 kg).<br />

Life Cycle<br />

Mature adults are usually between the ages <strong>of</strong> 3 <strong>and</strong> 5 <strong>and</strong> migrate to freshwater streams to spawn in<br />

the fall, between August <strong>and</strong> October. Spawning areas are usually small, gravelly streams <strong>and</strong> are<br />

<strong>of</strong>ten tributaries <strong>of</strong> a larger river. The spawning event usually takes place between August <strong>and</strong><br />

December on the North Coast. Eggs incubate in the gravel over winter <strong>and</strong> hatch around April.<br />

Juvenile coho may spend up to two years rearing in freshwater tributary streams prior to smolting.<br />

Page 9

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