Web Mapping Applications

Humbolt GIS Portal

Geographic Information System (GIS) Web Applications

Click on the icons or links below to access desktop or mobile version of the Web GIS 2.0

GIS services may be intermittent or unavailable Thursday, January 24th, 5 PM to 7 PM as we perform required maintenance and upgrades. We appreciate your patience as we complete this important work in order to better serve you


Download our Web GIS Guide (PDF)

Web GIS 2.0 Data Layers

This is a general list of the most used data layers.  Additional data layers are available that are not listed.

  • Critical Facilities, Roads and Streams
    • Public Land Survey
  • Jurisdiction Boundaries and Land Use
    • Planning Layers
      • Zoning
      • General Plan
      • Draft General Plan Update
    • Jurisdiction Boundaries
      • Fire Districts
      • Supervisorial Districts
      • Election Precincts
    • Housing Inventory
    • Historic Layers
  • Parcels
  • Hazards
    • Flood Zones
    • Slope and Topography
    • Fire Planning
    • Airport Compatibility Zones
  • Coastal Zone
    • Jurisdiction
    • Categorical Exclusion
  • Natural Resources
    • Streamside Management Area
    • Agricultural Soils
    • MS4 Permit Area
  • Demographics, Economics, and Mobility
    • Economic Development
    • Rural Transportation and Access Partnership (RTAP)
  • Topographic Layers
  • NAIP Aerial Imagery
Other Resources

Feedback and comments are welcome and can be submitted through our online form.