A quantitative criterion to predict the occurrence of tidal bores

-Tidal bores are fascinating phenomena that occurs in the estuary of many tidal rivers worldwide. -Tidal bores have significant repercussions on ecology and morphodynamics of an estuary. -Despite the interest, a predictive criterion for tidal bore occurrence is still missing. -Tidal bore is assessed from a phenomenological standpoint, based on the results of a numerical study. -The predictive criterion for bore occurrence performs well against both numerical and real data