Geographic Information Systems (GIS)

Plumas County Geographic Information Systems (GIS) is a division of Plumas County's Planning Services. GIS devhome page pic1_thumb.jpgelops, maintains and distributes spatial information to aid in the creation of maps and data analysis to support County departments and their customers. 

GIS, a computer system capable of holding and using data describing places on the earth's surface, is a resource for mapping or performing land based analysis. One of the advantages

GIS provides is the ability to assist in the decision-making process by providing an additional tool to analyze and compare numerous geographic data layers along with traditional databases.

Although a GIS can create attractive maps, it is not "map-maker" software. The map is typically the result of the analysis performed on data or questions posed such as: 

Location - "Where is it?

Condition - "What is at…"

Trends - "What has changed since…"

Patterns - "What spatial patterns exist?"

Modeling - "What if…"

To answer these questions, the appropriate data must be entered into the GIS. The data in a GIS is created in what are called GIS Layers. Each layer represents a group of common information. Some examples of GIS Layers that are used in the GIS of Plumas County include: parcels, roads, address points, the general plan, special districts, zoning, railroads, political boundaries, precinct data, and much more.