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ACCEPTANCE OF THE LACEY CREEK WATERSHED PLAN, PREPARED FOR INCLUSION IN THE EAST BRANCH DUPAGE RIVER WATERSHED PLAN
resolution
WHEREAS, the Illinois General Assembly has granted the County of DuPage ("COUNTY") authority through 55 ILCS 5/5-1062 to manage and mitigate the effects of urbanization on stormwater drainage by preparing a countywide plan for such stormwater runoff; and
WHEREAS, the COUNTY, pursuant to the above-cited statutory authority, has adopted the DuPage County Stormwater Management Plan (“Plan”), (OSM-001-89), which plans for effective stormwater management and flood control throughout DuPage County; and
WHEREAS, the Plan is intended to be supplemented from time to time with “watershed plans” prepared for each of the several watersheds located throughout DuPage County addressing the specific and unique concerns affecting each watershed; and
WHEREAS, the COUNTY has commissioned the development of the Lacey Creek Watershed Plan, prepared for inclusion in the East Branch DuPage River Watershed Plan, which will serve as a supplement to the Plan; and
WHEREAS, the Lacey Creek Watershed Plan recommends various projects to be undertaken within the Lacey Creek Watershed to provide flood control benefits to areas of the Village of Downers Grove, Village of Oak Brook, and unincorporated DuPage County located within the Lacey Creek Watershed; and
WHEREAS, the Lacey Creek Watershed Plan recommends the following:
Category 1 Recommended Projects:
• Alternative A2 - Highland Avenue Improvements - Raise Highland Avenue pavement elevation above a selected minimum elevation to preserve emergency access and eliminate traffic delays/detours for the roadway.
• Alternative C - Sterling Road Driveway Culvert Replacement - Replace a restrictive driveway culvert with a 36” RCP and provide storage on a nearby county-owned parcel.
• Alternative H - Lift Station Access Road Improvements - Raise the access road pavement elevation above a selected minimum elevation and replace existing roadway culvert with a new 12’ wide by 5’ high Reinforced Concrete Box Culvert.
Category 2 Recommended Projects:
• Streambank Stabilization along Tributary D near Downers Drive and 40th Street, as well as additional locations as needed.
• Improved storm sewer conveyance under Sterling Avenue to reduce flooding around the Downers Grove Wetland Mitigation Area.
• Water quality improvements throughout the watershed, which may include sediment basins, water quality basins, green infrastructure, rain gardens, conversion of standard detention ponds to native and/or wetland bottom basins, dredging of ponds, etc.
• Lyman Woods Wetland Vegetation Improvements.
• Creation of additional stormwater storage throughout the Watershed.
• Replacement of all failing CMP culverts.
• As part of any associated project or improvements, local urban flooding within the project vicinity should also be evaluated.
• General pipe maintenance in the form of regular cleaning and jetting should occur.
WHEREAS, the Stormwater Management Planning Committee opened the Lacey Creek Watershed Plan for a 30-day public review period between September 4, 2024 and October 3, 2024; and
WHEREAS, the Stormwater Management Planning Committee conducted a virtual public information Zoom meeting on September 18, 2024; and
WHEREAS, the Stormwater Management Planning Committee, through the County’s Stormwater Management Department, reviewed all public comments received pertaining to that watershed plan and responded thereto in a prepared Comment Response Document; and
WHEREAS, copies of the Lacey Creek Watershed Plan and associated Comment Response Document are available for review on DuPage County’s official web site.
NOW, THEREFORE, BE IT RESOLVED, that the Lacey Creek Watershed Plan, as reviewed and approved by the DuPage County Stormwater Management Committee, is hereby approved and adopted by the County Board as a supplement to the Plan.
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Enacted and approved this 12th Day of November, 2024 at Wheaton, Illinois.
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DEBORAH A. CONROY, CHAIR
DU PAGE COUNTY BOARD
Attest: ___________________________________
JEAN KACZMAREK, COUNTY CLERK