Williston Reservoir is the seventh largest reservoir in the world by volume, and the largest in British Columbia. To increase productivity of the reservoir and to improve harvesting opportunities for larger fish, the Province of B.C. stocked approximately 3.5 million kokanee in tributaries of the Williston Reservoir between 1990 and 1998. Although kokanee were found in the reservoir watershed prior to stocking, they were only spawning in a handful of tributaries and in relatively small numbers.
