Developed Land, by State, 1987
Description
This pie map shows developed land broken down
into its three subcategories: large urban and
built-up areas, small built-up areas, and rural
transportation land for each state and the
nation. The national totals are 53.0 million
acres of large urban and built-up areas (67%),
5.1 million acres of small built-up areas(6%),
and 21.4 million acres of rural transportation
land (27%) for a total of 79.5 acres of
developed land. Pies are proportional to the
amount of developed land in the state.
Cautions for this Product:
Data are not collected on Federal land. The
national pie is not proportional to the state
pies.
Sources
Source:
National Resources Inventory, 1997
Distributor:
USDA-NRCS-RIAD
Reliability:
NRI sample data are generally reliable at the
95% confidence interval for state and certain
broad substate area analyses. Generally,
analyses that aggregate data points by smaller
geographic areas and/or more specific criteria
result in fewer data points for each aggregation
and therefore less reliable estimates. NRI maps
reflect national patterns rather than site-
specific information.
Layers
Aggregate Layer:
State
Other Layers Displayed:
Definitions
Developed land:
A combination of land cover/use categories,
Urban and built-up areas, and Rural
Transportation Land.
Large urban and built-up areas:
A land cover/use category composed of developed
tracts at least 10 acres in size, meeting the
definition of "Urban and Built-up Areas" (see
definition). [NRI-97]
Rural transportation land:
A Land Cover/Use category which consists of all
highways, roads, railroads and associated rights-
of-way outside urban and built-up areas;
including private roads to farmsteads or ranch
headquarters, logging roads, and other private
roads, except field lanes. [NRI-97]
Small built-up areas:
A land cover/use category consisting of
developed land units of 0.25 to 10 acres,
meeting the definition of "Urban and Built-up
Areas" (see definition). [NRI-97]
Urban and built-up areas:
A Land Cover/Use category consisting of
residential, industrial, commercial, and
institutional land; construction sites; public
administrative sites; railroad yards;
cemeteries; airports; golf courses; sanitary
landfills; sewage treatment plants; water
control structures and spillways; other land
used for such purposes; small parks (less than
10 acres) within urban and built-up areas; and
highways, railroads, and other transportation
facilities if they are surrounded by urban
areas. Also included are tracts of less than 10
acres that do not meet the above definition but
are completely surrounded by Urban and Built-up
land. Two size categories are recognized in the
NRI: (i) areas 0.25 to 10 acres, and (ii) areas
greater than 10 acres. [NRI-97]
Product Information
Product ID:
5884
Production Date:
2/19/01
Product Type:
Map
For additional information
contact the Resources Inventory and Assessment Division.
Please include the Product ID you are inquiring about.
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please be aware of our disclaimer.
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