What is my stormwater fee based upon?

The fee is based upon the property runoff potential, or PRP, of each parcel in the City of St. Clair Shores.  PRP is based upon hydrologic engineering principals for calculating runoff that use both the impervious surface area and pervious surface area.  All surfaces will generate some amount of runoff during precipitation events and can be assigned a runoff coefficient to represent the fraction of the precipitation that results in runoff.

Runoff potential is based upon the following formula:  

Property Runoff Potential(sft) = .20 x [Total Area-Impervious Area] + 0.9 x [Impervious Area]

This factor is then multiplied by the per square ft rate that is determined by the fiscal budget

Show All Answers

1. What is a stormwater utility fee?
2. Why is stormwater run-off a problem?
3. Why should I have to pay for rain falling on my property
4. Why did the City stop charging a stormwater fee and but now is charging a new fee?
5. Why is this fee higher than the fee that was previously charged?
6. What is my stormwater fee based upon?
7. What is considered Impervious or Pervious?
8. How were the impervious surfaces measured on my property?
9. Are roads and public rights-of-way charged the stormwater utility fee?
10. What does the stormwater program do?
11. How accurate are the impervious are analysis images that can be found online?
12. How can customers apply for an Impervious Area adjustment?
13. What credits are available to residential property owners?
14. What if I was overcharged or I successfully appealed the measured impervious area?