The Corps of Engineers has judged that the benefits to fish are too
few, and the economic costs too great, to pursue further studies aimed
at determining the viability of either breaching John Day Dam or drawing
down its reservoir to enhance the survival of listed Snake River salmon
and steelhead species.
The estimated up-front cost of implementing the four drawdown scenarios
studied range from $2 billion to $4.9 billion. Total annual costs, which
include annualized implementation …
