To view any of the maps you see here in a larger size, click on the image.

WHAT IS GIS?

A Geographic Information System (GIS) is a computer-based program for working with spatial data, that is, information describing the land. A GIS can link different types of data with specific locations within the watershed, overlay map layers, and analyze complex spatial data to derive the answers to questions.

For example, we might use the GIS to determine how many acres of land within the Mattole watershed are above 1,000 feet in elevation. And of course, GIS can be used to produce custom maps of all kinds. It could be said that GIS does for working with maps and other spatial information what a word processor does for working with language.

The MRC GIS Program supports every MRC program with mapping, Global Positioning Satellite capabilities, and maintaining an aerial photograph library. We provide GIS services and exchange information with other restoration groups as well as government agencies.

AVAILABLE SERVICES

The GIS Program is available to make custom maps on a fee-for-service-basis. The handsome color-relief wall map of the Mattole watershed above is only an example of what is possible. For any location within the Mattole watershed, maps can include:

• topographical relief
• aerial photographs
• property boundaries
• creeks
• roads
• towns
• location of old growth
• historical fires
• and much more.

To find out more about fee-for-service mapping, purchasing maps you see on this webpage, or other Mattole GIS questions, call or email Steph Cepellos at the Petrolia office at (707) 629-3514.

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