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Soil
Maps & Technical Information
United
States Geological Survey
Aerial
photos often reveal evidence of unsuspected
development or manipulation of the site. A great
source for this type of information is a
topographic map from the United States
Geological Survey.
http://www.usgs.gov
Go
to the Geo-Data Explorer sub page, http://geode.usgs.gov/,
and you will be amazed at what you can map.
National
Soil Survey Center (NSSC)
The
NSSC works closely with several federal and
state agencies, land grant universities, and
private entities as part of the National
Cooperative Soil Survey (NCSS).
The
NCSS produces soil surveys to help people
understand soils and their responses to a
variety of natural and human influences. A soil
survey is a multi-purpose, science-based
inventory of the distribution and properties of
soils and factors affecting the soil
environment. Soil surveys include predictions of
soil behavior related to uses in an urban,
agronomic, or natural environment.
Here
is a link to their site:
http://ssweb1.stat.iastate.edu/soils/nssc/
State
Soil Geographic Database (STATSGO)
State general soil maps made by generalizing the
detailed soil survey data. The level of mapping
is designed to be used for broad planning and
management uses covering state, regional, and
multi-state areas. STATSGO data are designed for
use in a Geographic Information System (GIS).
http://www.ftw.nrcs.usda.gov/stat_data.html
FM
5-410 - Military Soils Engineering
Construction in the theater of operations is normally limited to roads, airfields, and structures necessary for military operations. This manual emphasizes the soils engineering aspects of road and airfield construction. The references give detailed information on other soils engineering topics that are discussed in general terms. This manual provides a discussion of the formation and characteristics of soil and the system used by the United States (US) Army to classify soils. It also gives an overview of classification systems used by other agencies. It describes the compaction of soils and quality control, settlement and shearing resistance of soils, the movement of water through soils, frost action, and the bearing capacity of soils that serve as foundations, slopes, embankments, dikes, dams, and earth-retaining structures.
http://www.adtdl.army.mil/cgi-bin/atdl.dll/fm/5-410/toc.htm
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