Potential changes compared with each site's own baseline, plus sites with persistently low signals. These are signals to check on the ground, not confirmed pollution.
Signal dropped 52 points compared with the previous weeks · Turbidity increased · Possible algal growth reported · Dead fish or wildlife reported · Odour reports · Water temperature rising
Signal 35 (-52 vs baseline) · last evidence 7h ago
Signal dropped 25 points compared with the previous weeks · Turbidity increased · Waste reports increased · Water temperature rising
Signal 64 (-25 vs baseline) · last evidence 1d ago
Waste reports increased · Odour reports · Foam or oily sheen observed
Signal 45 (+1 vs baseline) · last evidence 11h ago