This document summarizes information about surface water in the Coon Creek watershed district. It reviews hydrologic budget data and stream flow variation over 100 years. Analysis of rainfall data from 1985, 1999, and 2009 shows that less than 1 inch of rain did not cause much runoff in 1985, the fate of 1 inch of rain needs to be managed now, and water levels increase substantially with each inch of rain currently. Graphs show increasing water levels over time at three locations. The implications are that the lower watershed remains prone to flooding and shows some independence from the rest of the watershed. Increased erosion and water quality issues are expected in the lower watershed going forward.