The GIS and Mapping Services Division has released the Tree Canopy and Impervious Surface Estimator to allow users to calculate coverage areas for these two land cover types. Impervious surfaces are features such as roads, sidewalks, driveways and buildings that prevent water from infiltrating the ground surface. These features generate runoff when it rains and the water travels to storm drains and other low points, contributing to flooding and transporting pollutants. Tree canopy can intercept and reduce stormwater runoff and its coverage is monitored by the county as development occurs. Estimating impervious surface and tree canopy can help stormwater and other planning efforts. The application will be updated as new data becomes available.
Click the image below to use the application. It has also been added to our Infrastructure & Environment application gallery.