In a heavy rainstorm, we count on our gutters to collect water and divert it away from the house. Just two inches of rain on a typical roof can send a thousand gallons of water gushing through the gutters and downspouts. That is a lot of water that can end up where we don't want it if our gutter system fails us. Unfortunately, gutters seem to collect falling leaves and debris almost as effectively as they collect water, which can thoroughly clog them. This leaves the water with no place to go except over the sides.