1 / 17

GIS-Data Sources

GIS-Data Sources. Francisco Olivera, Ph.D., P.E. Srikanth Koka Department of Civil Engineering Texas A&M University. Introduction. It is important to know what data is needed, what format is preferred and where it can be found.

cain-gibson
Télécharger la présentation

GIS-Data Sources

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. GIS-Data Sources Francisco Olivera, Ph.D., P.E. Srikanth Koka Department of Civil Engineering Texas A&M University

  2. Introduction • It is important to know what data is needed, what format is preferred and where it can be found. • Different agencies develop and/or make available digital spatial data.

  3. NCRS • NRCS: National Resources Conservation Service • STATGO: State Soil Geographic Database • http://www.ftw.nrcs.usda.gov/stat_data.html • Scale: 1:250,000 • SSURGO: Soil Survey Geographic Database • http://www.ftw.nrcs.usda.gov/ssur_data.html • More detailed than STATSGO • Scale: Between 1:12,000 and 1:63,360

  4. USGS • http://seamless.usgs.gov/viewer.htm • Resolution: 30 m • Available datasets • NED: National Elevation Dataset (30 m) • NLCD: National Land Cover Dataset (1992, 2001)

  5. USGS • http://nhd.usgs.gov/ • NHD: National Hydrographic Dataset • Vector data containing surface water features like streams, lakes, ponds, springs, etc. • Scale: 1:100,000

  6. USGS • http://water.usgs.gov/lookup/getspatial?huc250k • HUC: Hydrologic Unit Codes • Vector data containing drainage areas • Four levels of classification: • Regions (2-digit code) • Sub-regions (4-digit code) • Accounting units (6-digit code) • Cataloging units (8-digit code)

  7. BTS • http://www.bts.gov/gis/ntatlas/networks.html • Available data • National Parks • State Boundaries • Airports • Amtrak Stations • U.S. Army Corps of Engineers Ports • U.S. Corps of Engineers Navigable Waterway Nodes • Hydrographic Features metadata • National Highway Planning Network • Railway Network • U.S. Corps of Engineers Navigable Waterway Network

  8. TCEQ • http://www.tceq.state.tx.us/index.html • Available Data: • Digital raster graphs (DRGs) • Monitoring sites • Permit sites • Waste sites

  9. TNRIS • http://www.tnris.state.tx.us/digital.htm • Available Data: • Roads • Hydrography • Vegetation • DOQQs • County boundaries

  10. TWDB • http://www.twdb.state.tx.us/mapping/gisdata.htm • Available Data: • NATURAL FEATURES • Aquifers • River Basins • HUCs • Major Basins • Texas Precipitation • ADMINISTRATIVE • Ground water conservation districts • Regional water planning areas • River authorities • Counties

  11. GLO • http://www.glo.state.tx.us/gis/ • Available Data (for Texas): • County boundaries • Hydrography • Roads • Places, names and populations • Shorelines • Urban areas • City Boundaries • Vegetation areas • Energy resource data • Oil and Gas pipeline • Coastal/Oil Spill Response data • Coastal management program data, etc.

  12. USGS • http://edcdaac.usgs.gov/gtopo30/hydro/ • Hydrologic Datasets for the whole world • Resolution: 30 arc-second (1 km) • Datasets: • Raster: DEM, Flow direction, Flow Accumulation, Slope, Aspect, Compound topographic index • Vector: Streams, Drainage basins

  13. NASA • http://www.nasa.gov/home/index.html • Available Data: • Remotely Sensed Meteorological Data

  14. ESRI • http://arcdata.esri.com/data/tiger2000/tiger_download.cfm • Available data: • Census • Congressional districts • Land marks • Hydrography • Rails • Roads

  15. NCDC • http://www.ncdc.noaa.gov/oa/ncdc.html • Available Data: • Precipitation • Temperature • Wind

  16. USGS • http://waterdata.usgs.gov/nwis • Real time and historic data for: • Surface water • Ground water • Water quality

  17. Other Sources • http://data.geocomm.com/catalog/US/index.html • 10 m resolution DEM • Available only for some areas

More Related