Fish kills have occurred in the reservoir below Grand Coulee Dam possibly due to total dissolved gas supersaturation (TDGS), which occurs when water cascades over a dam or waterfall. The highest TDGS below Grand Coulee Dam has occurred after spilling water via the outlet tubes, though TDGS from upstream sources has also been recorded. Exposure to TDGS can cause gas bubble disease in aquatic organi
Authors
J.W. Beeman, D.A. Venditti, R.G. Morris, D.M. Gadomski, B.J. Adams, S.J. Vanderkooi, T.C. Robinson, A.G. Maule