Fraser and Bristol Bay sockeye runs compared
This article regarding a proposed open-pit mine in AK has a few insights into the Fraser River watershed, including this assertion that could suggest foci for conservation actions:
Mining, pulp mills, agriculture, forestry, roads and other development in the Fraser River watershed all cause water pollution and regular violations of water quality standards for copper, zinc, lead, cadmium, chromium and many other pollutants toxic to salmon.
