region of extreme turbulence in the Washington Archipelago, where the 

 30 ft. to 40 ft. depth of brackish surface water, originating in the Fraser 

 River outflow, becomes mixed with about 600 ft. of dense sea- water, 

 pro\'ided by tidal circulation from the zone of up-welling along the 

 ocean coast. Evidence of fresh water from the Fraser River is lost in 

 this process, so that the outflow from Juan de Fuca Strait is more saline 

 than the approaches . to many of the smaller drainage systems in the 

 vicinity. 



The outflow from Juan de Fuca Strait is evidently maintained by a 

 hydraulic head established in Georgia Strait and Puget Sound. Emerging 

 from the strait it veers to the right and moves northwestward along the 

 Vancouver Island shore. This stream is subject to annual variation 

 related to the fresh-water discharge from the Fraser River and the 

 seasonal winds, which are south-east in the winter and north-west in the 

 summer. Within a distance of approximately 30 miles the energy of 

 the northwestward flow is dissipated in eddies, the water is absorbed 

 into the California current off-shore, and moves southward in the Oceanic 

 circulation. 



This research was interrupted by the Alberni project (see below) 

 and the war. Preparation of the report for publication is now under way. 



The Alberni Project 



In 1939 it was required to predict the state of pollution that would 

 result from a proposed sulphite-pulp miU to be estabhshed at the head 

 of Alberni Inlet on the west coast of Vancover Island. This seaway 

 is typical of many of the " fjord type " inlets along the British Columbia 

 and Alaska coast, which, oceanographicalty speaking, are two- 

 dimensional estuary systems. 



Plan and Elevation oi'-' Alberni Inlet 



180 



