Coastal rules do not apply in Johnson County. This is landlocked eastern Iowa. Work near water here follows Iowa DNR floodway permits, local floodplain ordinances, and Army Corps rules around Coralville Lake.
There is no ocean or Great Lakes shoreline in Johnson County, so no coastal-development permit or shoreline setback exists. The waters that matter are inland: the Iowa River, Clear Creek, and Coralville Lake, the US Army Corps of Engineers flood-control reservoir behind Coralville Dam. Building, filling, or excavating in a mapped floodway is governed by an Iowa DNR flood plain permit under Iowa Code Chapter 455B and Iowa Administrative Code 567 Chapters 70 to 72, not by any coastal statute. Around Coralville Lake the Corps manages the shoreline and flood pool, and Johnson County plus Iowa City and Coralville administer the local NFIP floodplain program.
No coastal permit exists to violate. Placing a structure, fill, or excavation in a floodway without the Iowa DNR flood plain permit is a public nuisance the department can enjoin, abate, or condemn at the violator's cost.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
Johnson County, IA
No county or state law limits holiday lights, inflatables, or yard displays. Iowa City, Coralville, and North Liberty rarely regulate seasonal decorations, a...
Johnson County, IA
No countywide rule governs garage-sale signs; each city sets its own. A temporary sign on your own lawn is generally fine, but one staked in a public right-o...
Johnson County, IA
Cities and the county regulate signs through zoning codes, not a countywide rule. Since Reed v. Town of Gilbert (2015), those codes must stay content-neutral...
Johnson County, IA
Rental permits are a city job, not a county one. Iowa City runs a mandatory rental-permit program with a two-year inspection cycle through its Housing Inspec...
Johnson County, IA
Iowa is landlord-friendly and has no just-cause eviction law, so no Johnson County city can add one. But the security deposit is capped at two months' rent u...
Johnson County, IA
Iowa has no rent control, and no government in Johnson County can create one. Iowa City, Coralville, and North Liberty landlords set and raise rent at market...
See how Johnson County's coastal development rules stack up against other locations.
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