The Jefferson Avenue Flood Prone Area is an upland depression with approximately 85 Acres tributary. The general flow is inwards towards a small depression located partially on Jefferson Avenue and multiple private properties. The large tributary area can be broken into 3 smaller watershed areas.
Tributary area “1” extends as far south as Wesley Street with an overland flow route through multiple private properties, and ponding occurs in at least one rear yard upland depression located north of Union Avenue.
Tributary area “2” ponds water in a depression centered on Franklin Avenue which then eventually overflows north through private properties and towards the depression on Jefferson Avenue.
Tributary area “3” generally flows from east to west routing through private properties until it reaches the Jefferson Avenue depression.
In 2018, the City of Wheaton contracted Webster, McGrath, & Ahlberg to complete the 2017 Flood Study Project V which included the Jefferson Avenue Flood Prone Area and the Madison Avenue Flood Prone Area. The purpose of this study was to determine the extent and frequency of overland flooding into the area’s homes. The area was surveyed and modeled, and an alternative analysis was completed. The final report and an inundation map can be found below.