Agriculture Reference
In-Depth Information
topographic maps are beautiful, having a graphic aesthetic that pres-
ents the information clearly and precisely. USGS topographic maps show
and name prominent natural and cultural features. The maps contain
a wealth of accurate, varied, and detailed information, including land-
form, vegetative cover, hydrologic systems, road and utility systems,
cultural features (including individual buildings, urbanized areas, and
cemeteries), and governmental boundaries. From these maps one can
make early determinations about elevation and land use suitability. As
a project progresses from preliminary to schematic design phase, the
detail represented by the contours and other physical features is usually
adequate for making good design and planning decisions that can later
be refined with more detailed and accurate topographic information pre-
pared by a land surveyor.
Figure 5.3
Portion of a USGS Quad Map. Go to www.usgs.gov for USGS maps and other map
products.
