IO Monitor Impervious Surfaces

IO Monitor Impervious Surfaces is a mapping product from Impact Observatory that shows which ground in a user-selected area is impervious (value 1) and which is pervious (value 0). Impervious cover drives stormwater runoff, urban heat and flood risk, and the provider positions the map as filling the gap between lower-resolution, out-of-date offerings and more costly map creation.

Each map is created from two inputs: Impact Observatory's land use and land cover (LULC) predictions and spectral data from satellite imagery for the same period. The result is a binary raster at the resolution of the source imagery: 10 m per pixel from Sentinel-2 or 3 m per pixel from PlanetScope. Maps are delivered as Cloud Optimized GeoTIFF files (8-bit, LZW compression, EPSG:3857) for a 120-day seasonal or 365-day window, with a stated revisit of 5 days where cloud-free imagery is available, so an area can be re-mapped to monitor change in impervious cover over time.

The provider names stormwater planning (assessing runoff from new development proposals), urban heat analysis (inputs to models used to cost greening and cooling interventions), urban planning and flood-risk management as uses, and shows example maps of Redmond (Washington), Bozeman (Montana), San Antonio (Texas) and Singapore. Maps are custom orders for an area of interest placed through the sales team; standard pricing covers areas up to 15,000 km², with tiered pricing for larger areas.