Greeley and Hansen, A TYLin Company, completed investigation of stormwater erosion and prepared bank stabilization permitting to mitigate flooding and further erosion.
This project involved conducted a field survey of damaged drainage easements in a subdivision and to compose a bank stabilization permit application package, Chicago District’s Regional Permit 10, to be submitted to the U.S. Army Corps of Engineers. The grading plan for the Providence Village Subdivision was dependent on runoff from residences flowing through channels in drainage easements. Development in the channels as well as absence of maintenance have impeded the channels’ ability to convey flow during the heavy wet weather events that are becoming more frequent in the region, resulting in erosion, scouring, flooding and other damages to properties. The Village of Gurnee, Office of Community Development, embedded a Greeley and Hansen engineer to conduct evaluations of each of the drainage easements, communicate with residents, and compose a technical memorandum identifying problem areas and proposing solutions to mitigate flooding and erosion issues in the subdivision.
The U.S. Army Corps Chicago District’s Regional Permit 10 (Bank Stabilization) focused on an unnamed tributary to the Des Plaines River, referred to by locals as the “Gurnee Tributary”, which was undergoing severe erosion along its eastern bank. The Village owns the property adjacent to the Gurnee Tributary and intended to regrade the bank to a gradual slope, add topsoil and a seeding mixture, and install a turf reinforcement mat to prevent further erosion.
- Field assessments of stormwater erosion
- Regulatory and agency coordination
- Mitigated flooding and stabilized streambank