When is storm water management required?
Storm water management is required on development sites having an overall area of one or more acres. This includes residential and non-residential subdivisions, and individual non single-family residential lots, when lot size is an acre or more. The City has the discretion to require storm water management on sites smaller than one acre if they contribute runoff to an impaired waterway, and this storm water management would help address a known environmental concern. An example is McCloud Run, Iowas only urban trout stream, located in Cedar Rapids. Trout are affected by thermal shock, caused by warm runoff draining from parking lots and other impervious surfaces. Placing storm water management between the runoff source and stream could allow the runoff to cool before it enters the stream.
