Urban Flooding in the Great Lakes States: A Municipality/Utility Survey Report

Abstract

As part of our Smart Water for Smart Regions initiative, the Center for Neighborhood Technology (CNT) is working with communities across Great Lakes states to alleviate urban flooding. The purpose of this survey is to develop an understanding of the effect of flooding on Great Lakes cities and to identify strategies to manage the problem. By providing a baseline of practices and policies among municipal stormwater/sewer utilities, the survey results are intended to support collaborative initiatives for dealing with flooding. Our survey, the first of its kind in the Great Lakes, found that municipalities and stormwater utilities face significant challenges. The 30 survey respondents serve 330 municipalities with a population of approximately 19.7 million people—nearly 23 percent of the total population of the Great Lakes states and province.4 All 30 respondents received flooding complaints, with 80 percent characterizing the annual number of complaints as medium or large. Stormwater is flooding into people’s backyards, streets, and parking lots (90 percent of respondents said), into the interior of buildings through sewer backups (83.3 percent), and through the walls of homes and buildings (46.7 percent).