Post-Construction Stormwater Ordinance & Redevelopment Policy

Post-Construction Stormwater Ordinance

On April 22, 2014, the City Council approved Coralville's post-construction stormwater ordinance. 
View Post-Construction Stormwater Ordinance (PDF)

Purpose of the Ordinance

  • Protect the health and water quality of the Iowa River, Clear Creek, Muddy Creek, and all tributaries, lakes, and wetlands within these watersheds. 
  • Address how stormwater is managed on new development and re-development within the community.
  • Reduce the degradation of our water resources that can result from pollutant and sediment runoff.
  • Minimize the damaging effects of localized flooding on residents, businesses, and property owners.   
Stormwater planter

Measuring Progress

Within the first 18 months since the ordinance was implemented, 30 new developments or re-developments in Coralville implemented stormwater quality practices. These practices include bio-retention cells and swales, soil quality restoration, tree and infiltration trenches, and porous paving systems. 

Post-Construction Stormwater Policy for Redevelopments

Over the next 20 years, an estimated 50% of development in Coralville will be redevelopment of existing properties.  On July 12, 2016, the City Council approved Coralville's post-construction stormwater policy for redevelopment projects.
View Post-Construction Stormwater Redevelopment Policy (PDF)

Purpose of the Policy

  • Allow the City to manage stormwater more sustainably than decades before, with benefits that reach far into the future.
  • Provide minimum post-construction stormwater requirements for redevelopment projects. 
  • Improve stormwater runoff and drainage patterns on existing properties while encouraging redevelopment and urban renewal.