PROPAGATION AND DISTRIBUTION OF FOOD FISHES, 1921. 23 
CLACKAMAS (OREG.) STATION AND SUBSTATIONS. 
[H. C. MircHeiy, Superintendent.] 
Under this heading are included the four Federal fish-cultural 
stations in the State of Oregon, two located on the Washington side 
of the Columbia River, with one egg-collecting station on the 
Washougal River, also in the State of Washington, and another on 
the Snake River, near Salmon, Idaho. The aggregate egg collec- 
tions during the fiscal year 1921 were 42,912,320, and though the 
chinook salmon predominates in the work all species of the Pacific 
salmons excepting the sockeye and including the steelhead are repre- 
sented. The shad is also propagated at Willamette Falls, Oreg., 
and the output is further augmented by the incubation of eggs of 
other species obtained by transfer from various points, and the 
distribution of the resulting fish in Oregon, Washington, and Idaho 
waters. The species thus transferred consist of brook trout, rainbow 
trout, blackspotted trout, and sockeye salmon. 
In line with the very general belief, which appears to be well sub- 
stantiated by reliable investigators, that much greater returns may 
be expected from the planting of larger-sized fingerling fish, particu- 
larly in the case of the chinook salmon, it has been the policy to 
develop facilities as rapidly as possible for this purpose. The 
stations in the Oregon field have an excellent record in this respect. 
During the fiscal years 1919-20 and 1920-21, an aggregate of approxi- 
mately 83,500,000 fish from 2 to 34 inches long have been planted in 
suitable waters of the State. These consist largely of the chinook 
salmon, though, as mentioned before, smaller numbers of brook, rain- 
bow, and blackspotted trouts and steelhead salmon are included. 
In contrast with the conditions that obtained during the previous 
spawning season of the salmon, when low-water stages at all points 
handicapped the work, floods prevailed in most of the streams dur- 
ing the season covered by this report. While it was not possible 
to state with accuracy to what extent the operations were curtailed 
by the floods, there is reason to believe that with more nearly normal 
weather conditions the aggregate collection of eggs would have ex- 
ceeded that of any preceding year and that at some points the eggs 
available would have been in excess of hatchery capacity. 
CLACKAMAS (OREG.) STATION, 
Though the racks installed in the Clackamas River in connection 
with operations at Clackamas station were of unusually substantial 
construction and remained intact through two severe freshets they 
were carried away on October 3, and the egg-collecting season ended 
on that date. Though a very fair number of chinook and silver 
salmon had collected between the racks prior to their destruc- 
tion, conditions in the river were such as to render the laying out 
and operation of a seine impossible. Consequently, the egg collec- 
tions were reduced very considerably, totaling only 360,000 of the 
chinook salmon. Shad culture at Willamette Falls during July re- 
sulted in the collection of 2,119,000 eggs of that species. Transfers 
of eggs from other points were made as follows: 3,166,000 chinook 
salmon from Snake River (Idaho) station, 100,000 chinook salmon 
