Theory 23/King tides/Threshold lens
Nuisance Flooding Is a Drainage Ratio
The claim
Nuisance flooding begins above a threshold in the ratio of high tide to drainage capacity, so a city with better outfalls floods later at the same sea level.
01Mechanism
Water ponds when inflow through outfalls reverses; the ratio determines when gravity drainage fails.
02Prediction
Onset should track the ratio across cities.
03Refutation
Onset tracking tide height alone would remove drainage.