GEOSPATIAL DATA REPORT : Finding and Using GIS Data

http://www.americaview.org/

“AmericaView (AV) is a nationwide program that focuses on satellite remote sensing data and technologies in support of applied research, K-16 education, workforce development, and technology transfer.” Most state’s AmericaView program provides access to its satellite imagery and remotely sensed data collection. Visit the member state websites below to find more about the state programs.

Current full member states are : Alabama, Alaska, Arkansas, California, Georgia, Hawaii, Idaho, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maryland, Michigan, Minnesota, Mississippi, Montana, Nebraska, New Hampshire, New Mexico, North Dakota, Ohio, Pennsylvania, South Dakota, Texas, Virginia, West Virginia, Wisconsin, Wyoming

Current affiliated member states are : Colorado, Nevada, New York, North Carolina, Utah, Vermont, Washington

http://seamless.usgs.gov/

The USGS Seamless Server, like the National Map Viewer, is a collaborative effort among the USGS and other Federal, State, and local partners to improve and deliver topographic information.  Seamless Server is the primary site for downloading USGS imagery, elevation and land cover data. Data downloading is limited up to 3 Gbytes of data in 250 MB files in one request.

Currently available datasets include:

• Orthoimagery (DOQ, NAIP, Urban High-resolution)
• Elevation (NED & SRTM)
• Land Cover (NLCD)
• Satellite Imagery (MODIS, Landsat Mosaic)
• Scanned topographic maps (DRG)
• Transportation (BTS)
• Various data map layers from National Atlas

https://lpdaac.usgs.gov/lpdaac/get_data/data_pool

The Data Pool is an online archive that provides free FTP access to selected LP DAAC (Land Processes Distributed Active Archive) data products.

Two datasets provided are:

• ASTER (Advanced Spaceborne Thermal Emission and Reflection Radiometer)
• MODIS (Moderate Resolution Imaging Spectroradiometer)

I haven’t really used this site but was recommended this site for ASTER & MODIS data..

http://glovis.usgs.gov/

[Note: The USGS now offers selected Landsat 1-5 and 7 archive data at no charge!]

GloVis is a quick and easy online search and order tool for selected NASA satellite data – order or download imagery for a fee (except for landsat imagery!)

Consult this tutorial. Though GloVis offers functionalities similar to USGS EarthExplorer, I prefer to use GloVis when searching satellite imagery, esp. landsat data. Perhaps it is because GloVis offers additional search features such as cloud cover limits and date limits… or just my personal preference.

Available imagery types from GloVis are followings:

• Landsat 7 ETM+
• Landsat 4/5 TM
• Landsat 1-5 MSS
• EO-1 ALI
• EO-1 Hyperion
• MRLC
• Tri-Decadal
• Aster TIR
• Aster VNIR
• MODIS

http://earthexplorer.usgs.gov

[Note: The USGS now offers selected Landsat 1-5 and 7 archive data at no charge!]

EarthExplorer is a tool for querying and ordering global satellite images.  Registered users have access to more features than guests do. Though not all, many datasets are available free of charge.

Through EarthExplorer you can also search, download, and order U.S. Geological Survey and NASA products from the following datasets:

• Aerial Photographs (mostly of U.S.)
• Advanced Very High Resolution Radiometer (AVHRR)
• Digital Elevation
• Digital Line Graphs (U.S. only)
• Digital Maps (DRG, U.S. only)
• Earth Observing 1 (EO-1)
• Global Land Survey
• Landsat Archive

You can also search and review products from the Radar, SPOT, and USGS Commercial datasets.

Consult the tutorial to search for data. Check also another tool, GLOVIS (Global Visualization Viewer.)

http://esip.umiacs.umd.edu/

The GLCF is a center for land cover science with a focus on research using remotely sensed satellite data and products to assess land cover change for local to global systems. Both satellite imagery and data derived from imagery are available for downloading.

Click on Data & Products for more information. Documentations on landuse and vegetation classifications are also available from this site.

http://afghanistan.cr.usgs.gov/downloads.php

Download comprehensive geospatial datasets for Afghanistan from this site, organized and managed by USGS. The data files include: Landsat and ASTER imagery, airborne imagery, SRTM DEMs, Soviet topographic sheets, and geological and geophysical datasets.

http://pubs.usgs.gov/ds/2007/245/

The 50 tiled images in this dataset are natural-color renditions of the calibrated six-band Landsat mosaics created from Landsat Enhanced Thematic Mapper Plus (ETM+) data. Each map quadrangle is 1° of latitude by° of longitude.

http://geogratis.cgdi.gc.ca/

GeoGratis is a portal provided by the Earth Sciences Sector (ESS) of Natural Resources Canada (NRCan) which provides geospatial data at no cost. GeoGratis uses both File Transfer Protocol (FTP) and HyperText Transfer Protocol (HTTP) to distribute geospatial data via its portal. To access data files, click on “Download Directory” on the left, select data types (vecor, raster, tabular), select geographic levels, select subjects/themes, and then files.

Data available from GeoGratis include:

• Administrative boundaries
• Protected areas
• Hydrography
• Tail and toad netowrks (?)
• VMAP0
• CanVec (50K, sort of like DLG and VMAP)
• NTDB (National Topographic Data Base, older version of CanVec)
• Land inventory (250K & 50K)
• Electoral districts
• Census data
• Ecosystems data
• AVHRR land cover data
• Satellite Imagery
• Scannded maps
• Airborne data
• DEM
• Conservation area database

http://www.geobase.ca

GeoBase is a federal, provincial and territorial government initiative that is overseen by the Canadian Council on Geomatics (CCOG). Through the GeoBase portal, users have access to quality geospatial information at no cost and with restricted use.

Current datasets include:

• Canadian Digital Elevation Data (CDED)
• Geodetic Network
• Geographical Names
• Geopolitical Boundaries
• National Hydro Network (NHN)
• National Road Network (NRN)
• Satellite Imagery