What You Should Know During Flood Threats
The Walnut Creek is known for flash flooding. Flash flooding is a term used for small streams and creeks that are susceptible to quick rises in stream levels. As quick as these water levels reach their peak (crest) they begin to recede. Walnut Creek reaches from the City of Windsor Heights northwest to Dallas Center and stretches out between Grimes and Waukee. It is important to understand that only heavy rains within the Walnut Creek watershed will have an impact on flooding within the City of Windsor Heights. Take this opportunity to view the Walnut Creek watershed map at http://www.dallas-swcd.org/walnut_creek_watershed.htm
If you are a homeowner or business owner in the City of Windsor Heights and you live or work within a flood prone area, pay close attention to heavy rain fall events within the watershed. Typical heavy rainfall events take place between May and June, but we have had major flood events in late winter and late summer as well. It is important you stay informed to the latest weather reports and information during wet weather periods. A NOAA weather radio will alarm you during the late evening and early morning. If you are at work, listen to the radio or access the NOAA Des Moines Internet site for the latest watches and warnings.
IIDNR protocols provide our City with suitable guidelines to design a local program that address the IDNR's six Best Management Practices (or BMPs), which are also known as "control measures". These six BMP's are designed to reduce the discharge of pollutants from MS4s, to the maximum extent practicable, to protect water quality, and to satisfy the appropriate requirements of the Federal Clean Water Act. The six BMP categories are:
- Public Education & Outreach Control Measure.
- Public Participation & Involvement Control Measure.
- Illicit Discharge Detection & Elimination Control Measure.
- Construction Site Stormwater Runoff Control Measure.
- Post Construction Stormwater Management in New Development & Redevelopment Control Measure.
- Pollution Prevention and Good Housekeeping for Municipal Operations & Maintenance Control Measure.
The federal regulations provide flexibility within these six categories of BMPs.