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Climate hotspots across Howard County

Four documented places where flooding, extreme heat, or both concentrate more than the county average: each pulled from Howard County Climate Forward and the county’s open-data GIS layers. Filter by issue type, click a marker or a row, and read the sourcing before you draw conclusions about your own street.

This is a community education tool, not an official hazard determination. Boundaries here are approximate and meant to build general awareness. For a property-level flood zone lookup or permit-grade data, use the county’s own DFIRM floodplain viewer.
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Map data © OpenStreetMap contributors. Scroll-zoom is disabled until you click into the map; use the list below if you’d rather not use the map at all.

All documented hotspots shown on the map above. Data last updated 2026-07-06. Select a row to locate it on the map.
Location Issue Severity Description

Sources

  1. Howard County Office of Community Sustainability, Climate Forward dashboard: heat vulnerability index and flood risk mapping. climateforward.howardcountymd.gov
  2. Howard County GIS / Open Data portal: Digital Flood Insurance Rate Map (DFIRM) viewer and regulated floodplain layers. data.howardcountymd.gov
  3. Maryland iMAP GIS Data Catalog and FEMA flood maps. data.imap.maryland.gov · mdfloodmaps.net