THE SALMON AND SALMON FISHERIES OF ALASKA. 
138 
moutli of Eyak Eiver, the main outlet to the lake; 5^ miles farther east is Glacier 
River, and the same distance beyond is Algonek Slough, the first or western slough 
of Copper River. After that come Pete Dahl Slough, Big River, Ooquenhena, Cot- 
tonwood Point, Little River, Gus Wilson Slough, a,nd Marten River, all sloughs of 
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Slcetcli of Vicinity of Oroa and Odiak. 
Copper River. The distance from Glacier River to Marten River is about 40 miles by 
steamer. About 15 miles to the eastward of Marten River is Chilkhat River, which is 
an outlet to two or more lakes and is the easternmost stream now fished by the 
canneries. 
COPPER RIVER. 
Coiijier River, about 20 miles from the marshes forming the coast line, breaks into 
a delta and discharges its waters through numerous sloughs, the principal ones being 
those just mentioned. The tide ebbs and flows for a long distance thi'ough the 
sloughs, and they not only receive the river and tidal waters, but in addition those 
sloughs bordering the highlands and mountains receive the discharges from small 
lake outlets and glacial streams. It is probable that few except king salmon ascend 
a great distance up Copper River proper, finding their spawning-beds in the lower 
tributaries. Bordering the delta, and as far as Point Steel on the west and Kayak on 
