Following the stones painted with whitered- white waymarks, the path runs beside the River Lech for eight miles before reaching its namesake village.

BBC: Hiking the Alpine Walserweg trail

Yet reaching this point has required significant deepening of the Savannah River, from its natural depth of 17 feet (5.2 metres) to 42 feet today.

ECONOMIST: Savannah's port

The road was closed after the River Ouse flooded during recent heavy rains, with water in the area reaching a depth of 1.35m (4.5ft) in places.

BBC: Welney Land Rover flood driver was 'irresponsible'

The wedge has been moving up the Mississippi since early this month, reaching mile marker 89 -- signifying that many miles from the river mouth -- by Wednesday, Laigast said.

CNN: Salt creeping up the Mississippi River