Live Roof | pg . 11
REDUCTION OF S TORM W ATER RU NOFF The soil in gr een roof systems acts like a sponge and absorbs excess r ainwater. Research has shown that extensive green roof roofs reduce the impact of each new building on the municipal storm drainage system and surrounding watershed. They reduce flooding,erosion and artificial heating of water which helps pr eserve the integrity fisheries and many other forms of aquatic lif e.