The City of Arcata Geographic Information System (GIS) provides digital geographic information analysis and mapping services to City staff, the public, and other jurisdictions and features public access to maps and data. The GIS program also maintains and updates a variety of City databases and records including but not limited to: Parcel ownership, easements, building activity, stormwater utility information, wetlands, zoning, historical sites, and water quality information.

Attention! Your access to and /or use of any and all information provided herein constitutes your agreement to Terms of Use. These maps are for informational purposes only. The City of Arcata, including any employees and sub-contractors, makes no warranties, express or implied, as to the accuracy of the information contained in this map. The City of Arcata, including any employees and sub-contractors, disclaims liability for any and all damages which may arise due to errors in the map and the user's reliance thereon.

Interactive Maps  

Parcel Finder:

Looking for Property Information?  Find a parcel by Address or Assessor Parcel Number and generate a PDF report of parcel information such as zoning, FEMA Flood Zones, historic districts, land use, parks, seismic features, and more!  The Parcel Finder is comprehensive and contains over 100 map layers, 7.5 minute Topographic Quads and historical imagery (1941-2016).  For help using this application see this guide.

Find Sewer Lateral Certificate


 Users can now browse or query sewer lateral certificates issued or applied for since the program started.  This application will be updated on a quarterly schedule and will note the last update.

Tour Arcata Trails: 

Enjoy this interactive GIS story map of the City of Arcata’s Trails!  Learn more about our wonderful trails the City has to offer.  Please use your space bar to advance through the Story Map.

Explore Arcata!

 Learn more about the City of Arcata with this interactive GIS story map.  Take a self-guided tour of some of Arcata’s world famous locations and events.  Please use your space bar to advance through the Story Map.

Arcata King Tide Community Observation (2017-2018)

View community submitted photos of affected areas surrounding Arcata Bay during the King tides of 2017-2018.  This site will be re-launched for uploading photos for the King tides in 2018-2019.

75 Years of Landscape Change in Arcata, California:

  One way to better understand how the landscape has changed through the years is through early aerial photography. Compare and contrast 1941 aerial imagery and 2016 aerial imagery by dragging the slider left or right.

Download City of Arcata Maps

Download GIS Data

Download City of Arcata's GIS spatial data in .shp format for use in Mapping Software like ArcView

Download the Humboldt Bay Sea Level Rise Water Level Extract Program

Developed by Jeff Anderson of Northern Hydrology & Engineering and funded by the City's Environmental Services Department, the Humboldt Bay Sea Level Rise Water Level Extract Program is an Excel application that provides the user with the Humboldt Bay water level elevation data developed for the Humboldt Bay: Sea Level Rise, Hydrodynamic Modeling, and Inundation Vulnerability Mapping project (Northern Hydrology & Engineering, 2015). The model was developed and used to predict water levels within the existing shorelines of Humboldt Bay for five sea level rise scenarios. 

Smart Phone Users/Mobile Devices

Going hiking in the Community Forest or Marsh? Looking for downtown parking? Download Arcata's free mobile maps from Avenza PDF Maps and track your location with a blue "You Are Here" dot. No need for cellular coverage to view these maps and there are no data roaming charges when traveling