275 



DRAFT 



2) Columbia River gill-net dropout loss - text explanation: 



'...it seems reasonable to assume an annual dropout mortality rate of 

 between 4 and 8 percent for the Columbia River commercial net fishery. ' 



The text explanation for these estimates were based on the Klamath River tribal fishery 

 and the Puget Sound gill-net fishery. 



The table lists harvest as 257,000. This figure is the total commercial landings in the 

 Columbia from Zones 1-5 gill-net, Youngs Bay terminal, and tribal set-net fishery 

 above Bonneville Dam of all species including Indian-sold steelhead and includes all 

 landings by Washington fishermen. There have been no studies on gillnet dropout in 

 the Columbia. Gillnet dropout is believed by ODFW to be low and the mortality rate 

 for dropped-out fish varies considerably by species, by gillnet type, and by time of 

 year. 



3) In-river sport loss - text explanation: 



'...it would be reasonable to assume a minimum loss rate of between 

 three and nine percent for the in-river sport fisheries of Oregon. . . ' 



These estimates were based on steelhead studies conducted in British Columbia. 

 Applying this study to Oregon's catch and release program for wild winter steelhead, 

 ODFW reportedly assumes a loss of 3% using barbless hooks and 9% using barbed 

 hooks, and assumes losses are higher for summer steelhead because of warm water and 

 low flow. 



The table lists harvest as 241,000. This includes the sport catch in Oregon's coastal 

 streams, Oregon's tributaries of the Columbia River, the Oregon and Washing ton catch 

 in the lower Columbia, and Oregon and Washington catch in the Buoy 10 fishery. The 

 majority of the catch in the Buoy 10 fishery is made by Washington anglers. This facet 

 of the table is completely faulty in that it assumes the 241,000 catch is all released to 

 later die at a 3-9% rate. In fact, the catch is all kept. Estimates of caught and released 

 fish are not considered. Most caught and released fish are wild or unmarked hatchery 

 steelhead (1,425 in 1990). The Buoy 10 fishery handles some sublegal salmon. A few 

 Columbia Chinook are caught and released during the summer steelhead fishery mid- 

 May to July. 



Applying "hooking mortality" estimates to harvest data firom fisheries which are not 

 regulated as "catch and release", or where fish are not regularly released, is erroneous. 



Page 229, Table 1.1-25. 1990 Catch Numbers of Individual and Combined Oregon 



Salmonid Fisheries. 



The table lists the individual catch total of all of Oregon's salmonid fisheries in 1990 at 

 1,080,000 fish. The table is deficient in that it does not include the sport catch in 

 Oregon's Columbia River tributaries (100,100 fish in 1990) as an entry; however, the 

 1(X),100 fish are included in the total. The authors have included the Washington catch 

 in the Buoy 10 and main-stem lower Columbia sport fisheries. The Oregon and 

 Washington cutthroat trout catch in the main-stem lower Columbia sport fishery is also 

 included in this table. 



A-69 



