Environmental Rules in Mount Prospect, IL (2026)
4 verified environmental rules for Mount Prospect, Illinois, sourced directly from the municipal code and official government pages.
Verified from official government sources
Stormwater Management
In the Village of Mount Prospect, every commercial, industrial and multi-family development must include storm water holding facilities, whatever its size. Detention basins must store the runoff of a 100-year rainfall, the release rate is capped at 0.20 cfs per acre, and detention is barred from the side and rear yards of single-family properties.
Mount Prospect Storm Water Detention Requirements
Significant RestrictionsMount Prospect Village Code § 16.603
A. General: All commercial, industrial and multi-family zoned developments, regardless of size, shall include provisions for storm water holding facilities as required in chapter 15 of this code. This storage may be provided in detention ponds, retention ponds, ponding on parking lots, and in underground pipes and storage chambers. Storm water detention shall not be permitted in the side or rea...
Erosion Control
In the Village of Mount Prospect, every development, public or private, must include a soil erosion and sedimentation control plan. No plat or development plan is approved unless it shows that sediment will not leave the site in a storm event of 10-year frequency or less, and builders must keep streets free of dirt, dust and mud.
Mount Prospect Erosion and Sediment Control Rules
Significant RestrictionsMount Prospect Village Code § 16.703
A. All developments, whether public or private, shall include a plan for soil erosion and sedimentation control. B. Except as provided herein, no plat of subdivision or development plan shall be approved unless the plat or plan and accompanying materials indicate that measures to be taken to control erosion and sedimentation will be adequate to assure that sediment is not transported from the s...
Flood Zones
In the Village of Mount Prospect, no one can start development in a special flood hazard area without a development permit from the director of community development. Fill in the flood fringe requires compensatory storage, and the mapped SFHAs include the Des Plaines River, Feehanville Ditch, McDonald Creek and Weller Creek.
Floodplain Development Rules in Mount Prospect, Illinois
Significant RestrictionsMount Prospect Village Code § 22.106
Development in and/or filling of the flood fringe will be permitted if protection is provided against the base flood or 100-year frequency flood by proper elevation, and compensatory storage and other provisions of this article are met. No use will be permitted which adversely affects the capacity of drainage facilities or systems. ... ... A. Development Permit: No person, firm, corporation, or...
Flood Elevation Requirements
In the Village of Mount Prospect, buildings in a 100-year floodplain must be protected below the flood protection elevation, which section 22.102 defines as the base flood elevation plus two feet of freeboard. On permanent fill, the lowest floor, including the basement, must be a minimum of two feet above the base flood elevation.
Base Flood Elevation and Freeboard in Mount Prospect
Significant RestrictionsMount Prospect Village Code § 22.109
C. Protecting Buildings: All buildings located within a 100-year floodplain also known as an SFHA, shall be protected from flood damage below the flood protection elevation. ... ... 1. A residential or nonresidential building, when allowed, may be constructed on permanent land fill in accordance with the following: a. The lowest floor, (including basement) shall be a minimum of two feet (2') ab...
Looking for Cook County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Mount Prospect city rules.
Environmental Rules in Cook County →