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Fishery Bulletin 109(4) 
Figure 4 
Catch of American shad (Alosa sapidissima) in Northwest Fisheries Science Center 
surface trawls (most 30 minutes) by month, for the combined years 1998-2008. 
Catches are log 10 -transformed. Isobaths 
countercurrent to the north during the spring and early 
summer off Oregon (Huyer et ah, 1975) may passively 
transport shad to the north. 
Most commercial landings of shad in Oregon are from 
gill nets fished in the Columbia River and along the 
Oregon coast during May and June when fishing ef- 
fort is high and shad are migrating into the Columbia 
River (up to 40 to 172 t per month in some years be- 
tween 1978 and 2009). Shad are also caught and landed 
are 100 m and 200 m. 
in bottom and midwater trawls used to target Pacific 
whiting ( Merluccius productus ) during the summer, and 
some are landed in trawls or gill nets during the fall 
and winter, October-March (Table 3; Karnowski and 
Hurtado 6 ). In northern California, where up to 32 t of 
shad are landed in some years, more shad were landed 
in the ocean and inland waters during the “winter” 
than the “summer” (Table 3; Larinto 7 ). Observer data 
on shad catches in the limited-entry trawl groundfish 
