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Geographic Information Systems. Other Digital Data. 1. Digital Line Graph. Base cartographic data, distributed by USGS. Map created from USGS DLG culture data showing contours, roads, section lines, lakes and streams. http://spatialnews.geocomm.com/whitepapers/usgs_dlg.pdf.

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1 digital line graph
1. Digital Line Graph
  • Base cartographic data, distributed by USGS

Map created from USGS DLG culture data showing contours, roads, section lines, lakes and streams

http://spatialnews.geocomm.com/whitepapers/usgs_dlg.pdf

1 1 dlg data content
1. (1) DLG - Data Content
  • Planimetric data

- include transportation, hydrography, administrative, and political boundaries

  • Topographic data

- portray relief

  • Include spatial data, attribute data, and topology
1 2 data availability
1. (2) Data Availability
  • Large-Scale (1:24,000)
  • Intermediate-Scale (1:100,000)
  • Small-Scale (1:2,000,000)
dlg data availability
DLG Data Availability ..

Map scale

Data content

1 2 large scale 1 24 000 dlgs
1.(2) Large-Scale (1:24,000) DLGs
  • Correspond to the USGS 1:24,000 scale topographic quadrangle maps
  • Primarily cast to the UTM projection system, but some are cast to the State Plane coordinate system
1 24 000 scale dlg data
1:24,000-Scale DLG data ..

West Rapid City, SD

http://edc.usgs.gov/geodata/exampldlg24k.html

1 2 intermediate scale 1 100 000 dlg
1.(2) Intermediate-Scale (1:100,000) DLG
  • Derived from USGS 30x60-minute quadrangle maps
  • Cast to the UTM projection system and are referenced to either NAD27 or NAD83
  • Available products :
  • - Individual 1:100,000 DLGs
  • - 1:100,000-Scale Hydrography
  • and Transportation
1 100 000 scale dlg data
1:100,000-Scale DLG data ..

Coeur D'Alene, ID-MT

http://edc.usgs.gov/geodata/exampldlg100k.html

1 2 small scale 1 2 000 000 dlg
1.(2) Small-Scale (1:2,000,000) DLG
  • Derived from the USGS sectional maps from the U.S. National Atlas
  • Available products :
  • Current: date between 1990 and 1994
  • Historical between 1973 and 1980
example of 1 2 000 000 scale dlg data of the illinois and missouri states
Example of 1:2,000,000-Scale DLG Data of the Illinois and Missouri States

Hydrography

Boundaries, hydrography, and roads

http://edc.usgs.gov/geodata/exampdlg.html

2 land use and land cover digital data lulc
2. Land Use and Land Cover Digital Data (LULC)
  • Distributed by USGS

- 1:250,000 - 1x1 degree

- 1:100,000 - 30x60 minutes

2 lulc data contents
2. LULC Data Contents

(1) Land use and land cover

   Anderson Classification System Level I

(2) Political unit

   state, county, and city boundaries

(3) Census county subdivision

    census tracts for MSA

(4) Hydrologic unit

    An 8-digit Hydrological Unit Code, region, sub-region, accounting, and cataloging unit

(5) Federal land ownership

1 100 000 lulc data

1:100,000 LULC Data

Anderson classification system

1 250 000 lulc data
1:250,000 LULC Data

Spokane, WA, land use/land cover, census, and political units

http://edc.usgs.gov/geodata/exampleslulc.html

hydrologic unit

Hydrologic Unit

An 8-digit Hydrological Unit Code, region, sub-region, accounting, and cataloging unit

3 soils data
3. Soils Data
  • Developed by USDA Natural Resources Conservation Service (NRCS)
  • Soil Survey Geographic Data Base (SSURGO)
  • State Soil Geographic Data Base (STATSGO)
  • National Soil Geographic Data Base (NATSGO)
3 soils ssurgo
3. Soils - SSURGO
  • Soil Survey Geographic Data Base (SSURGO)
  • 1:24,000, 7.5'x7.5'quads
  • Based on aerial photographs and field survey
  • Map unit: soil series
  • Attributes: physical, chemical, biological, land use, etc.
soils

Soils

SSURGO

soils statsgo
Soils - STATSGO
  • State Soil Geographic Data Base (STATSGO)
  • 1:250,000, 1x2 degree coverage
  • Map unit: soil association
  • Attribute: 60 soil properties
  • Attribute structure
statsgo map unit
STATSGO Map Unit

STATSGO data user guider page 5

statsgo map unit1
STATSGO Map Unit ..
  • STATSGO map units consist of 1 to 21 components
  • For each component, there are 60 soil properties
  • For each component, there are 1 to 6 soil layers
  • For each layer, there are 28 soil properties; for example, percent clay
  • A map unit identifier created by concatenation of the two-character State FIPS code and a three-digit Arabic number. It uniquely identifies a map unit within a State
statsgo attributes
STATSGO Attributes

A set of relational tables is used to store the attributes for the Map Unit and its Components

http://www.ncgc.nrcs.usda.gov/products/datasets/statsgo/data/ny.html

slide29

http://www.nysaes.cornell.edu/hort/faculty/pool/NYSite-Soils/nysoilmap.jpghttp://www.nysaes.cornell.edu/hort/faculty/pool/NYSite-Soils/nysoilmap.jpg

3 soils natsgo
3. Soils - NATSGO
  • National Soil Geographic Data Base (NATSGO)
  • 1:7,500,000
  • Used primarily for national, regional, and multi-state resource assessment, planning, and monitoring
unesco soils
UNESCO Soils

The Digital Soil Map of the World (version 3.0) was released in May 1994

Scale of 1:5,000,000

4 digital raster graphics

4. Digital Raster Graphics

Developed by USGS

A raster image of a scanned USGS topographic map georeferenced to the UTM grid

Useful as a background layer in a GIS, or to be merged with other digital data to produce a hybrid digital file

4 new york state data sets
4. New York State Data Sets
  • http://cugir.mannlib.cornell.edu/
  • http://www.nysgis.state.ny.us/
  • http://nationalmap.gov/viewer.html
land cover map of the unites states
Land Cover Map of the Unites States

http://www.nasa.gov/vision/earth/environment/Land_Cover_Change.html

3 soils ssurgo map unit
3. Soils - SSURGO Map Unit

http://dusk2.geo.orst.edu/virtual/bolstad.pdf

statsgo table relationships
A set of relational tables is used to store the attributes for the Map Unit and its ComponentsSTATSGO Table Relationships

STATSGO data user guider page 10

slide42
http://geospatialrevolution.psu.edu

STATSGO data user guider page 10

slide43

http://www.ncgc.nrcs.usda.gov/products/datasets/ssurgo/index.htmlhttp://www.ncgc.nrcs.usda.gov/products/datasets/ssurgo/index.html