Lake County WDO requires a Watershed Development Permit for any grading over 5,000 sq ft or 100 cubic yards of fill. Drainage must not redirect stormwater onto neighbors per Illinois civil law rule (reasonable-use doctrine).
Grading and drainage in Lake County are regulated primarily through the Watershed Development Ordinance (WDO) Articles III-V, supplemented by municipal building codes in Waukegan, Libertyville, Gurnee, Highland Park, and Lake Forest. A Watershed Development Permit is required for: any hydrologic disturbance over 5,000 sq ft, fill or excavation over 100 cubic yards, any work in a floodplain or wetland, and any new impervious surface over 15,000 sq ft (which triggers detention requirements). Detention volume must control the 2-year and 100-year storms to pre-development release rates. Retaining walls over 4 ft require structural engineering and a building permit. Illinois follows the reasonable-use civil law rule (Templeton v. Huss, 57 Ill.2d 134) — landowners may alter drainage but cannot unreasonably increase the burden on neighboring parcels. Compensatory storage required for any floodplain fill at a 1.5:1 ratio in Lake County.
Unpermitted grading: WDO stop-work and fines $500 to $2,500 per day (Art. XIV). Unauthorized floodplain fill: IDNR/FEMA penalties plus mandatory removal. Civil drainage claims: unlimited damages plus injunctive relief in circuit court.
Lake County, IL
Barking dogs in unincorporated Lake County are addressed as nuisance complaints through the Public Nuisance Ordinance. Lake County Animal Care and Control in...
Lake County, IL
Lake County Public Nuisance Ordinance prohibits sound from amplification equipment audible at 100 feet or more from the source, or exceeding 70 dB(A) at the ...
Lake County, IL
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Lake County, IL
Lake County IL regulates amplified music through the UDO noise performance standards and municipal ordinances. Outdoor amplified events require special event...
Lake County, IL
Maximum fence height in unincorporated Lake County is 6 feet. Fences exceeding 6 feet in nonresource zones require a building permit. Sight-obscuring fences ...
Lake County, IL
Illinois Fence Act (765 ILCS 130) governs agricultural boundary fences. In residential unincorporated Lake County, fences must be entirely on private propert...
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