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Federal dataMaps & Geospatial

NLCD 2001 Version 2

Published by U.S. Geological Survey · Updated 03/31/2025

Last updated
03/31/2025
First published 09/20/2019
Update frequency
Not listed
Formats
Web only
Coverage
Nationwide
Federal data

About this dataset

National Land Cover Database 2001 (NLCD2001) is a 16-class (additional four classes in Alaska only) land cover classification scheme that has been applied consistently across all 50 United States and Puerto Rico at a spatial resolution of 30 meters. NLCD2001 is based primarily on the unsupervised classification of Landsat Enhanced Thematic Mapper+ (ETM+) circa 2001 satellite data. NLCD2001 improves on NLCD92 in that it is comprised of three different elements: land cover, percent developed impervious surface and percent tree canopy density. NLCD2001 also uses improved classification algorithms, which have resulted in data with more precise rending of spatial boundaries between the land cover classes.

Files and access

Links open the official government source

Links open outside websites we do not control.

Frequently asked questions

Who publishes NLCD 2001 Version 2?
U.S. Geological Survey, part of National Aeronautics and Space Administration, publishes this dataset on Data.gov.
How often is it updated?
The publisher does not list a schedule. The last update was on 03/31/2025.
How do I download it?
Use the official source link above to view or request the data.

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Where this catalog comes from

Catalog checked 10/24/2026

We list dataset descriptions only. Downloads and APIs link straight to the official government source, which holds the current version and its terms of use.

Source: Data.gov · Last updated 10/24/2026 · Listing only; the data stays with the publisher

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