Documents

Land Cover Final Report

The Southwest Regional Gap Analysis Project (SWReGAP) was the first formal GAP project designed at a regional, multi-state scale. This report presents an overview of the methodologies used to create the regional land cover dataset and highlights issues associated with achieving this collaborative product through a regionally coordinated process.

• View report

White Paper: A Matrix-Based Approach to Fuzzy Set Accuracy Assessment

We present an innovative approach to fuzzy set map accuracy assessment that uses a systematic framework based on ecological criteria. A primary objective is to incorporate greater objectivity in the error evaluation process, thus allowing multiple map experts to conduct fuzzy accuracy assessments for multiple maps in a standardized fashion.

• View white paper

Land Cover Descriptions

This document contains detailed descriptions and photos of each land cover classification.

Recommended citation: USGS National Gap Analysis Program. 2005. Southwest Regional GAP Analysis Project—Land Cover Descriptions. RS/GIS Laboratory, College of Natural Resources, Utah State University.

• View descriptions

Land Cover Poster

• Download full size: 48" x 62"
• Downloand half size: 24" x 31"

The Development Of Mapping Zones To Assist In Land Cover Mapping Over Large Geographic Areas

This document describes how the mapping zones were created.

• View document