Fish Ladder Flow-Network & Dissipation Map

Every dam that blocks a river also blocks the fish that migrate along it, so hydropower schemes are built with a staircase of pools — a fish ladder — that lets the river drop its head gradually enough for fish to swim back up. This 2D companion redraws the same weir-equation hydraulics as an abstract flow-network bar chart (pool elevation, jet particles, a fish agent that gets swept back when the jet outruns its burst speed) paired with a parameter-space heatmap that maps turbulent dissipation across head drop and pool width, so you can see at a glance which combinations stay under the fisheries guideline.