710 
BULLETIN OF THE BUREAU OF FISHERIES 
was larger than for any year prior to 1924, and far in excess of any previous off-year 
catch in the district.” Everything indicates that the odd-year runs of pinks have 
suddenly built up to approximately the level of the even-year runs. If the future 
odd-year runs continue to improve and the even-year runs are maintained unim- 
paired, it will mean a large increase in the pink-salmon packs in central Alaska. 
The reason for this sudden development is quite unknown and will doubtless remain 
so, although it may be suggested that the winter of 1925-26, which followed the spawn- 
ing that produced the large run of 1927, was exceptionally mild. It was a matter 
of common observation that this was the case, and the fact is recorded in the reports 
of the Weather Bureau. 
COHO SALMON 
Since 1893 Cook Inlet has produced cohos in every year except 1895 and 1905. 
Catches were small prior to 1907, and also in the five years immediately following 
that season. (Table 33 shows the catches since 1906.) The exceptional catch in 
1907 is unexplained in any literature on the fisheries of the inlet examined, and nothing 
is known of the distribution of cohos in that year, as the catch was entirely unallo- 
cated. In 1914 the catch began a fluctuating movement similar to that of pinks, 
with good catches made in the even years and poorer catches in the odd years. This 
continued until 1923, but since then the 2-year cycle has not been apparent. It 
is probable that these are due to some association between the fisheries for pinks 
and cohos. In general, the trend has been and still is upward. The poor pack in 
1921 was not indicative of a scarcity of fish, but was undoubtedly owing to economic 
causes. In 1927 the catch reached a total of 378,674 and marked a new high level 
of coho production in the Cook Inlet district. It is interesting to note that 49 per 
cent of the allocated catch in 1926 and 62 per cent in 1927 came from localities 
north of East and West Foreland. In 1920 the third best year of coho production, 
only 21 per cent of the allocated catch came from those places. From this it would 
appear that cohos prefer the more northerly streams of the inlet, and that the closed 
season of 10 days in August has restricted the catch in waters south of the Forelands. 
No evidence of depletion of this species can be seen. 
Table 33. — Graphic table showing catch of coho salmon, Coolc Inlet, 1906-1927 
[Each letter represents 10,000 fish] 
1900. 
1907. 
190S. 
1909. 
1910. 
1911. 
1912. 
1913. 
1914. 
1915. 
1916. 
1917. 
1918. 
1919. 
1920. 
1921. 
1922. 
1923. 
1924. 
1925. 
1926. 
1927. 
Year 
Catch 
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