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National Land Cover Database (NLCD) 2001 Accuracy Assessment Points Conterminous United States

Dates

Publication Date
Time Period
2001
Release Date
2024-07-16

Citation

U.S. Geological Survey, 2003, National Land Cover Database (NLCD) 2001 Land Cover Conterminous United States (ver. 2.0, July 2024): U.S. Geological Survey data release, https://doi.org/10.5066/P9MZGHLF.

Summary

The land-cover thematic accuracy of NLCD 2001 was assessed from a probability-sample of 15,000 pixels. NLCD 2001 overall Anderson Level II and Level I accuracies were 78.7% and 85.3%, respectively. Accuracy results are reported for 10 geographic regions of the United States, with regional overall accuracies ranging from 68% to 86% for Level II and from 79% to 91% at Level I. Geographic variation in class-specific accuracy was strongly associated with the phenomenon that regionally more abundant land-cover classes had higher accuracy.

Contacts

Attached Files

Click on title to download individual files attached to this item.

NLCD 2001 Accuracy Assessment reference image.jpg
“2001 reference image”
thumbnail 245.14 KB image/jpeg
NLCD2001AA.zip
“2001 accuracy data folder”
940.75 KB application/zip
NLCD2001_RevisionHistory.txt
“2001 revision history”
1.24 KB text/plain

Purpose

The goal of this project is to provide the Nation with complete, current, and consistent public domain information on its land use and land cover.
2001 reference image
2001 reference image

Map

Communities

  • Earth Resources Observation and Science Center (EROS)

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Provenance

Data source
Input directly
Revision 2.0 by Audra Griebel on July 16, 2024. To review the changes that were made, see “NLCD2001_RevisionHistory.txt” in the attached files section.

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