People need to go back to school.
With a 1degree increase in temperature; the water vapour the air can hold goes up. Causing more flash floods, with more water when it rains.
Also the land can only absorb so much water. It helps to build more water catchment sites (shallow ditches) over land, but everyone perfers straight roads and rivers and flater land. Nature works it best, but when a man decides he wants a flater lawn, he fucks up natures plan.
In WW2 when the allies were invading Normady, the planners forgot about the hedges. Rocks from farms piled by roads, trees grown for windbreaks made it almost impossible to tranverse the countryside in Normandy...