The same wild-salmon health index, read two ways. One maps it across twelve BC watersheds against thirteen real stressors. The other plays it forward forty-five years and shows where the verdict is solid — and where it isn't. The colour bar above is the shared scale: collapsing in red, healthy in green.
Twelve real Freshwater Atlas basins. Pick a year, a species, a baseline — then ask what moves with salmon health: mines, logging, wildfire, farms, dams, climate. The honest answer is rarely one thing.
Open the map →The same basins played across forty-five years, each measured against three baselines at once. A narrow band means the verdict is robust; a wide band means the baselines disagree — and that disagreement is the point.
Open the slider →Health comes from DFO NuSEDS spawner counts; basins are real BC Freshwater Atlas watershed groups. Stressors are joined from StatCan census, ERA5 climate, BC Wildfire and cutblock records, and DFO aquaculture licences — every join done in the basin's own map projection, no rasters faked. With twelve basins this is built to surface hypotheses, not settle them: correlation is not causation, and the tools say so out loud.