Post-Construction Stormwater Management

Consistent with the recommendations outlined in the Walnut Creek Watershed Master Plan, the City revised its Post-Construction Stormwater Management Ordinance and adopted the current version of the Clive Stormwater Management Manual on June 13, 2019.  The new post-construction stormwater management regulations are focused on maintaining or restoring stable hydrology in the receiving waters by ensuring the developed site mimics the natural hydrology of the pre-development site.  These new regulations look at several stormwater impacts (volume, rate, duration, frequency) rather than being solely focused on rate control.

Post-Construction Stormwater Management Manual

Ordinance #1009 - Postconstruction Stormwater Management

Council Presentation - October 13, 2016

Walnut Creek Watershed Master Plan 

For questions on stormwater, contact:

Rachel Conrad
(515) 867-5128
Water Resources Engineer

Doug Ollendike
(515) 223-6221
Community Development Director


Post-Construction Stormwater Management Ordinance
 www.iowastormwater.org