The results of the hydrographic studies showed that 

 the net seaward flow of the lighter and less saline river 

 runoff water is along the northwest side of inner Bristol 

 Bay. The net motion of high-salinity water toward the 

 head of Bristol Bay was shown to transport with it the 

 waters of Ugashik and Egegik rivers, which enter the bay 

 on the southeast side. Near Egegik Bay to Middle Bluff 

 these waters joined the seaward flow of Kvichak and 

 Naknek river waters, which enter at the head of Bristol 

 Bay. Waters of these four rivers, along with the large 

 volume of water from the rivers entering Nushagak Bay, 

 are eventually transported to, and moved seaward on, 

 the northwest side of Bristol Bay. Dye tracer studies 

 showed that Naknek, Egegik, and Ugashik rivers were 

 similar to each other in the courses followed during ebb 

 and flood tides. Flood tide currents, along with the non- 

 tidal current, transported water from Egegik and 

 Ugashik rivers above or north of the entrance to Egegik 

 and Ugashik bays, respectively. 



LITERATURE CITED 



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1958. Return of silver salmon, Oncorhynchus kisutch (Walbaum), 

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1965. Electroencephalographic studies of homing salmon. Science 

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1966. Underwater guideposts; homing of salmon. Univ. Wis. 

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JOHNSON, J. W. 



1960. The effect of wind and wave action on the mixing and disper- 

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McINERNEY, J. E. 



1964. Salinity preference: an orientation mechanism in salmon mi- 

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1974. Ecology and behavior of juvenile sockeye salmon (Oncorhyn- 

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