Managing Geospatial Data Using ArcGIS

Table of Contents

  1. Managing Geospatial Data Using ArcGIS
  2. Setting up Your Workspace
  3. Downloading Data from the Humboldt County Website
  4. Decompressing the files using 7zip
  5. Managing Data Using the Catalog Window
  6. Inspecting the Metadata
  7. Adding Data to ArcMap
  8. Exploring the ArcMap User Interface
  9. Adding a Second Data Frame to the Map Document
  10. Repairing Broken Links
  11. Compressing the Project Folder as a 7z file

Downloading Data from the Humboldt County Website

Humboldt County’s Planning Division collects and develops GIS data and software for the initial purpose of supporting the General Plan Update. The goals of the division have expanded to meet the GIS needs of federal, state, and local agencies. This data is readily available for free download through the Humboldt County GIS Data Download web page.

Open the Chrome browser and use the link above to navigate to the official Humboldt County GIS download page.

If you do not have the Chrome browser, you can download it here.

Take a moment to read through the disclaimer about the data provided on this website. This section will give you some information about uncertainty and error when using this data.

An image of the Humboldt County website.

There is also some further information about data projections and spatial reference information. You don’t have to worry about understanding this now. You will learn about projections and spatial reference systems in a later chapter. There are additional notes, including information about the metadata and file compression format. Take a moment to read these as well.

You will download four shapefiles from this website, a road layer, a fire hydrant layer, a county boundary layer, and a layer for the election precincts in Humboldt County. One of these layers, the roads, is located near the top under Frequently Requested Data Sets. Right-click on the link that says “Roadway Centerline Shapefile (ZIP).” Select Save link as, then navigate to your originals folder. Save the compressed file inside your originals folder.

An image of the road shapefile link
In Chrome, you can right-click on a link to save a downloaded file to a specific location. Click to view the image in a larger size.

Scroll down until you see the data located under administrative boundaries. Repeat these steps for the Humboldt County boundary shapefile and the Election Precincts shapefile. Be sure to save the files to your original folder.

An image of the compressed road file inside the original folder
Be sure to save the compressed file to your original folder and not a different location. Click to view the image in a larger size.

Once you are ready, scroll down further and download the Fire Hydrants shapefile located under fire plan data.

An image of all four datasets in original folder
When done, you should have four compressed shapefiles located in your original folder. Click to view the image in a larger size.