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Evanston presents citywide stormwater master plan, highlights model and targeted capital projects
Summary
City staff and consultants described a hydrologic/hydraulic model of Evanston's sewer system, identified limited areas of concern, and recommended regulatory, public-system and green infrastructure steps to reduce flooding and combined-sewer overflows.
City officials and consultants on May 12 described a newly completed stormwater master plan they say will guide investments to reduce street flooding and basement backups across Evanston.
Bridget Nash, senior project manager for the city, introduced the report and said the study uses a detailed hydrologic and hydraulic model of the city's combined and separate sewer networks to locate weaknesses and prioritize improvements. "The model is now used as a valuable and powerful tool in evaluating system performance under current and future needs," Nash said.
Hay & Associates project manager Jeff Wickenkamp said the model represents the city at a neighborhood scale: about 9,500 catchments (roughly two-thirds to three-quarters of an acre each) and some 12,000 pipe segments, which the consultants…
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