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Excerpt from Biological Investigations of the Fishery Resources of Trinity River, CaliforniaAlmost without exception, Trinity River salmon migrating above the South Fork spawn in the 72 miles of river between the North Fork and Ramshorn Creek. In addition to the main river, three tributaries are used by spawning salmon. A dam at the Lewiston site would cut off 35 miles of the main river and all of Stuart Fork, the most important spawning tribu...

Excerpt from Biological Investigations of the Fishery Resources of Trinity River, California Almost without exception, Trinity River salmon migrating above the South Fork spawn in the 72 miles of river between the North Fork and Ramshorn Creek. In addition to the main river, three tributaries are used by spawning salmon. A dam at the Lewiston site would cut off 35 miles of the main river and all of Stuart Fork, the most important spawning tri...