USGS 2010 GAP Landcover

This dataset combines the work of several different projects to create a seamless data set for the contiguous United States. Data from four regional Gap Analysis Projects and the LANDFIRE project were combined to make this dataset. In the Northwestern United States (Idaho, Oregon, Montana, Washington and Wyoming) data in this map came from the Northwest Gap Analysis Project. In the Southwestern United States (Colorado, Arizona, Nevada, New Mexico, and Utah) data used in this map came from the Southwest Gap Analysis Project. The data for Alabama, Florida, Georgia, Kentucky, North Carolina, South Carolina, Mississippi, Tennessee, and Virginia came from the Southeast Gap Analysis Project and the California data was generated by the updated California Gap land cover project. In areas of the county (central U.S., Northeast) that have not yet been covered by a regional Gap Analysis Project, data from the Landfire project was used. In 2009 Landfire data was combined by the Landscope project into one uniform coverage. This compiled data was the data pulled into this project. Similarities in the methods used by these projects made possible the combining of the data they derived into one seamless coverage. They all used multi-season satellite imagery (Landsat ETM+) from 1999-2001 in conjunction with digital elevation model (DEM) derived datasets (e.g. elevation, landform) to model natural and semi-natural vegetation. Vegetation classes were drawn from NatureServe's Ecological System Classification (Comer et al. 2003). Additionally, all of the projects included land use classes that were employed to describe areas where natural vegetation has been altered. In many areas of the country these classes were derived from the National Land Cover Dataset (NLCD). For the majority of classes and, in most areas of the country, a decision tree classifier was used to discriminate ecological system types. In some areas of the country, more manual techniques were used to discriminate small patch systems and systems not distinguishable through topography. Constraints: The data provide a coarse generalized abstraction of the geographic distribution of land cover circa 1998 for North Dakota. These data were produced for an intended application at the state and at the national scale by aggregation of the data with GAP analysis products from other states. These data may not be appropriate for local or large-scale analyses (>1:100,000 scale). Notification of the use of the data and acknowledgement of the U.S. Geological Survey would be appreciated in products derived from the use of the data. Not to be used for navigation, for informational purposes only. See full disclaimer for more information.

Data and Resources

Additional Info

Field Value
Maintainer Hosek, Brian
Last Updated July 28, 2019, 04:43 (CDT)
Created July 28, 2019, 04:43 (CDT)
Identifier 2ececaff-29ab-45a9-a4bf-aafe05ce298c
Issued 2016-01-26
Modified 2017-04-10
accessLevel public
publisher Game and Fish Department
resource-type Dataset
source_datajson_identifier true
source_hash c62c6ef37c9b5a934046cda6fec3de7a7fb4328c
source_schema_version 1.1
spatial POLYGON ((-102.151748791 48.998722201, -97.228911505 49.000389296, -97.090244684 48.68417629, -97.175485058 48.562034759, -97.14664896 48.14263821, -96.850987495 47.59851116, -96.839191889 47.006813816, -96.75262323 46.923788252, -96.798155512 46.629493005, -96.599331832 46.329919017, -96.563228102 45.935220029, -104.045492816 45.945191416, -104.048726205 48.99981441))
temporal 2010-06-22T05:00:00-04:00/2010-06-22T05:00:00-04:00