Fall NEARC 2018

AUTHORS: Emily H. Wilson, Cary Chadwick, David Dickson – University of Connecticut

ABSTRACT: The MS4 (Separated Storm Sewer System) General Permit is a regulation issued by the State of Connecticut that applies to 121 of Connecticut’s 169 municipalities. In Connecticut, towns are required to focus their efforts on three priority areas, one of which is areas of high impervious cover (basins greater than 11% directly connected impervious). Percent impervious area within each small watershed identifies the areas of town that should be the focus of stormwater management activities. The impervious surface area was determined from statewide, 1 foot impervious surface data. The thematic raster layer includes three classes: building, roads and other impervious and is available on CT ECO, a website that makes Connecticut’s geospatial information available. It is available for raster and vector download as well as a map service. http://cteco.uconn.edu/projects/ms4

The impervious surface data have been used by Esri and the state of Connecticut for related products that have already saved the state hundreds of thousands of dollars proving, once again, that investing in base data lays the foundation for all sorts of further data development. Making the layers accessible means that EVERYONE can benefit, sometimes in very unexpected ways.