Runoff Calcs Rainfalls 1999 2018 Paved Surfaces 98% 2yr, 1hr 1.0in Area Percentages Area Percentages Unpaved Surfaces 90% 2yr, 24hr 2.3in Paved 60% Paved 70% Woods (good) 30% 100yr, 1hr2.2in Unpaved 15% Unpaved 10% Lawns (good) 39% 100yr, 24hr 4.83in Lawns 25% Lawns 20% Runoff Calculations, rainfall data, and area percentages by group from 1999, …
