Welcome to Model My Watershed - Runoff Simulation. See how changes in the amount of rainfall, the surfaces on which the rain falls and the texture of the soil change where the water goes. To begin, decide how much rain will fall by using the slide bar on the upper right. Then select the land-cover type where the rain will fall. Finally, pick a soil type. The coarsest soils (sandy soils) are on the left and the finest soils (clay loam) are on the right. As the simulation runs, follow where the water flows. Also, look at the column in the center that shows how much water goes in each direction.
Precipitation for 24-hour storm event
Hydrologic Soil Group
Apply our Site Storm Model to your watershed. Info and help at http://wikiwatershed.org/model/.