The Localized Flood Map Screening Tool gives metro communities and stakeholders the opportunity to determine what areas and assets may be subject to potential localized flood risk during short-term, extreme rain events. The tool identifies localized Flood Hazards, referred to as Bluespots. These Bluespots are broken into categories of flood water depth increments based on the exposure and sensitivity of Council assets and infrastructure. We hope that this tool will help cities prioritize policy and implementation strategies (for instance, targeted green infrastructure or storm water design improvements that may reduce localized flood risk).
The data is derived from the topography of the earth contained in the State of Minnesota's 3-meter digital elevation model (DEM) built from the state's LiDAR effort. In the absence of regional storm water data, potential localized flooding locations are determined based on depressions in the DEM. Given this constraint, the Council encourages use of storm water data and other relevant data, including site-specific analysis, to verify areas of potential localized flood risk.
The Extreme Heat Map Tool shows the Land Surface Temperature data for the Twin Cities metro area. Communities may use this tool to determine which areas within their community are most susceptible to extreme heat. We hope that this tool will help cities prioritize policy and implementation strategies (for instance, targeted tree planting or design improvements that may mitigate risks associated with extreme heat). The effect of this heat is often called the Urban Heat Island Effect (UHI) which consists of urban or rural center areas that are significantly warmer than surrounding rural areas due to human activities.
The tool is useful in demonstrating the difference in land surface temperature across the metro region due to the existing built and natural environment, a product of land use, site design, and land cover. By changing our built and natural environments through policies, implementation, and sensible site design, we can reduce this extreme heat effect and thereby improve public health and livability.
How To Use the Extreme Heat Map Tool