20230131 09425300 1.0 TRUE Municipal MS4 Non-Consortium Storm Pipes This data is a collection of stormwater mains within Westchester County, NY. The data was collected by various local sources in January 6, 2016. This layer has been updated in July 2020 to remove all features that were located in MS4 consortium municipalities (17 municipalities are consortium in the year 2020). This layer now contains only storm pipes that are nonconsortium. Town of Mamaroneck, Village of Croton, Village of Larchmont, Village of Mount Kisco, Village of Ossining, and the City of Yonkers