aeration spillway, bonnevile fish hatchery, SwittersB

This lovely spillway aerates the spilling water from one pond to another providing oxygen to the cruising fish in the holding ponds.

trout, holding pond, Bonneville Dam Hatchery, SwittersB
Below, another spillway adds additional aeration to an adjacent holding pond for the large brood, rainbow trout.

spillway, aeration, pond, hatchery, Bonneville, SwittersB