replenishing groundwater and surface water runoff USGS: Runoff replenishing groundwater and surface water http://water.usgs.gov/edu/runoff.html surface water runoff replenishing groundwater and surface water US Geological Survey web site. Runoff (Surface Water Runoff) runoff Runoff (Surface Water Runoff) runoff replenishing groundwater and surface water runoff https://water.usgs.gov/edu/runoff.html replenishing groundwater and surface water runoff replenishing groundwater and surface water replenishing groundwater and surface water USGS Water Science School