what is downstream and upstream flow
Upstream Downstream Definition. Upstream direction is the end of the waterway from where the flow of water originates. Where the flow ends, at the opposite end of the waterway, is downstream.For exemple, from Kingston to Toronto you are heading upstream, the water emptying from a river back into the ocean.Kingston to Cornwall is âdownstreamâ. When going in the upstream direction, you keep all the red buoys on the starboard side and the green buoys on port side.or exemple, from Kingston to Toronto you are heading upstream, the water emptying from a river back into the ocean. Kingston to Cornwall is âdownstreamâ. When going in the upstream direction, you keep all the red buoys on the starboard side and the green buoys on port side.