The Millennial Kingdom hydrological cycle is a reestablishment of the original condition of the earth, when Eden was at plateau at the top of a mountain that filled the whole Earth.
Ezekiel’s Hydrology
The New Deep
Ezekiel tells us that a great river will issue forth from the temple in the Jerusalem. This is part of a hydrological cycle which doesn't presently exist. It's established along with the Millennial Kingdom.