The occurrence of incoming water (between a low tide and the following high tide)(noun)
WordNet. Princeton University. 2010.
Use "rising tide" in a sentence
"The whole Sudan, from Wadi Halfa to Equatoria, was held by only twenty-four thousand Egyptian soldiers, marooned in their fortified islands against a rising tide of rebellion."
"Nonetheless, with a snow-and-ice storm keeping many people from their offices, and a rising tide of near hysteria in Washington among the weak-kneed, things got out of control."
"As the debate in the colonies raged, “men struggled desperately,” wrote Esther Forbes, “to keep some middle ground, until that ground was cut from under their feet by the rising tide of emotion, violence, and blood.”"