Precipitation falling on the Earth and flowing over and through the soil is a major source of water pollution. While the precipitation is natural, what happens to it after it falls is dramatically affected by human activity. For example, in the Piedmont Region of Pennsylvania, of the 45” of rain that falls during the average year, 25” would be expected to be returned to the atmosphere by vegetative evapotranspiration, 12” would infiltrate deeper into the ground, and only 8” would runoff over the surface. Yet after development, as much as 95% might leave as surface runoff (PA DEP, 2006).(2008) By the US Composting Council.
You are here: / / USCC factsheet: Using Compost in Stormwater Management