Saltchuck

The ultimate consensus was to keep the de-Whited river Green to its Tukwila junction with the Black, the outlet of Lake Washington, then make it Duwamish the rest of the way to the saltchuck.

Trucks disappeared over precipices, rail cars were shunted into the saltchuck, and donkey engines collapsed from old age. […] However, if it was abandoned anywhere near the saltchuck, it was probably picked up by one of the entrepreneurs […]