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- Finding and Using No-Cost and Low-cost Data
December 16, 2003
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- Introduction
- Free Data vs Creating Your Own
- The GIS User Pyramid
- Sources of Free Data
- Data Sharing Initiatives
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- Jill Saligoe-Simmel, Ph.D.
- President, Indiana Geographic Information Council, Inc.
- 317-233-6009
- jsaligoe@iupui.edu
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- Create it
- Obtain it for free
- From federal, regional, state, and local government agencies
- Private companies
- From FTP
- From clearinghouses
- Buy it
- GDT, Etak, Satellite Imaging Companies
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- You get exactly what you want
- Accuracy
- Coverage
- Format
- Data elements
- Ownership rights
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- One of the keys is the ability to discover, access, integrate and share
information from multiple sources…
- especially information that helps us understand the Earth and activities
that occur on the Earth
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- When we share information from multiple sources, we collaborate much
more effectively to deal with today’s Challenges
- Interoperability is a key to information sharing and collaboration
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- It’s free!
- Lots of data available
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- Who developed the data?
Qualifications?
- How was the data developed? (source documents / methodology)
- What is the format of the data?
Can it be converted cleanly?
- What attribute data is incorporated?
- Is the data maintained? How
often, and how much?
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- What formats can your GIS support
- Compression / decompression software
- Software available at:
www.Shareware.Com
- Coordinate system / datum
- The wait for downloads, 56KB not
for the faint of heart
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- National Resources
- Public Sector
- Higher Education Community
- Private
- Indiana Data Providers
- Other Resources
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- National Resources: Public Sector
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- View a variety of data at a national level.
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- Managed by the USGS
- Interactive data viewer plus download capability
- Most data is at county level.
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- Available data includes:
- Mineral resources (coal mines, etc)
- Hazards (faults, hurricane tracks, etc)
- Biologic resources (migration routes, etc)
- Demographic data (census extracts and boundaries, etc)
- Political boundaries (congressional districts, states, counties, etc)
- Land cover, shaded relief
- Health data (west nile virus, cancer, etc)
- ..and much more
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- USGS’ seamless data viewer provides access to several elevation related
datasets through a data viewer
onto which you can overlay reference geographies
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- NED is a seamless mosaic of best-available elevation data
- Can be used for calculating slope and hydrologic derivatives – important
for certain applications such as HAZUS.
- 30 M resolution
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- Collected during Space Shuttle Endeavour mission, launched on Feb. 11,
2000
- SRTM was assigned to collect 3-D measurements of the Earth's surface
- 20 m Horiz. accuracy / 16 m vertical accuracy
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- Compiled from Landsat satellite TM imagery (circa 1992)
- 21 land cover categories
- 30 m resolution
- Used for purposes such as assessing wildlife habitat, water quality,
pesticide runoff, land use change, etc
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- The USGS has collected over 2 million point features and their
associated coordinates that can be displayed in a GIS application.
- Features include:
- Cities
- Schools
- Churches
- and many more…
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- Coal, petroleum, oil, gas and natural gas liquids information as well as
geologic data such as fault lines.
- Coverage's have been collected from the USGS Energy Resources Program
and other agencies.
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- Hydrologic Unit Maps
- 1:2,000,000-scale Hydrologic Units
- 1:250,000-scale Hydrologic Units
- National Hydrography Dataset
- 1:100,000
- surface water features such as lakes, ponds, streams, rivers, springs
and wells
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- Spatially Distributed Data
- Land use/land cover
- Urbanized areas
- Populated place locations
- Reach File Version 1 (RF1)
- Soils (STATSGO)
- Elevation (DEM)
- Major roads
- USGS hydrologic unit boundaries Dam sites
- EPA regional boundaries
- State boundaries
- County boundaries
- Federal and Indian Lands
- Ecoregions
- Environmental Monitoring Data
- Water quality monitoring station summaries
- Water quality observation data
- Bacteria monitoring station summaries
- Weather station sites
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- People Data is divided into the following categories:
- Persons
- Households/Families
- Ancestry
- Workplace
- Education
- Workers/Disabled/Military
- Income
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- Geographic Data is divided into the following categories:
- National
- State
- County
- Tract
- Block Group
- Block
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- Data is rated at +/- 167 feet.
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- SSURGO Data
- Provides high quality soils maps of local areas such as counties.
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- Example – St. Joseph County, Indiana
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- Private Sector
- National Universities
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- Offers a variety of data sources including:
- Digital Raster Graphics (topographic maps) (fee)
- Digital Ortho Quarter Quads (photography) (fee)
- Digital Elevation Models (fee)
- National Wetlands Inventory (free)
- TIGER data (free)
- 1:250 K Landuse/landcover maps (free)
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- Clearinghouse of data resources, including
- TIGER
- National wetlands inventory
- State plane and UTM zones
- Aquifers
- Demographic data
- and much, much more…
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- Provides options to download selected census geographies and attributes.
- Free use for research and educational purposes only.
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- Columbia University source of 1990 Census Data
- Public use data samples
- Current population survey
- Economic census
- County business patterns
- County City data book
- Statistical Abstract
- National Economic, Social, Environmental Data bank
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- Variety of free data resources.
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- State and University Data Resources
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- Provides multiple interactive websites and access to hundreds of data layers.
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- GIS Atlas for Southern Indiana
- Project of IGS, INDOT and Bernadin, Lochmueller and Associates
- 170 layers of data available for viewing and download.
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- GIS Atlas for Southern Indiana
- Project of IGS, INDOT and Bernadin, Lochmueller and Associates
- 170 layers of data available for viewing and download.
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- GIS Atlas for Indiana
- Project of IGS, INDOT and Bernadin, Lochmueller and Associates
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- GIS Atlas for Indiana
- Download data
- 170 layers to be added by 2004 – same layers currently available in
Atlas of Southwestern Indiana.
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- Lake RIM GIS
- Provides detailed information about the northwestern Indiana region.
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- Lake RIM GIS dataset categories
- Infrastructure
- Demographics
- Hydrology
- Aerial Photos
- Environmental data
- AHID Datasets
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- Indiana Public Land Survey System GIS Dataset
- County boundaries
- Land Survey
- State Boundaries
- Township and Range Lines
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- Will provide decision-making tools to address the environmental impacts
of human activities on the land and water.
- Collaboration between The Polis Center and the Indiana Department of
Environmental Management.
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- Digital Ortho Quarter Quads (DOQQs)
- Digital Raster Graphics (DRGs)
- 6” resolution 2002 aerial photography for Marion County
- 1” resolution 1997 photography for Marion County
- 6” resolution 1998 Bloomington orthos
- Historic photography for Bloomington, IN
- IDNR Recreational facilities and trails
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- Overlay photos with other data to give frame of reference.
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- Sample of 1:24,000 DEMs – ArcInfo GRID format
(entire state for Purdue staff)
- 14 digit and 250 K watersheds
- Hydrologic Settings
- PLSS Grid for Indiana
- Digital Ortho Quarter Quads for Indiana (SID format)
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- Portal to a variety of economic and demographic data
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- Provides a variety of economic statistics for Indiana counties
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- A Web-based interface
- Allows users to create complex queries of data through Geographic
Information System (GIS) software
- Addresses the technical and analytical needs of a wide range of users
- Provides hundreds of created data classes
- Releases data quarterly as they are updated
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- Covers entire Indianapolis MSA.
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- Over 16,000 point locations
- 162 total categories
- Schools
- Churches
- Libraries
- and much more…
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- Census Tracts
- School Corporations
- Townships
- ZIP Codes
- Cities
- Bus Routes
- Others
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- Provides rich source of information on Indiana agricultural statistics.
- Much of this information would require pre-processing work to use in a
GIS.
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- Provides a variety of tables on multiple subjects.
- Also makes available CD’s of census data for checkout.
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- Sites with lists of data resources
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- Dozens of links to a multitude of data sources broken down by national
and by individual states
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- Dozens of links to a multitude of data sources broken down by national
and by individual states
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- Federal Geographic Data Committee
- National Spatial Data Infrastructure
- I-Team Initiative
- USGS National Map
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- An environment where organizations and technology interact to foster
activities for using, managing, and producing geographical data.
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- Government information is a valuable national resource - OMB A-130
- Geographic information is intertwined with the broad field of
Information Technology
- Geography serves as the common thread to weave together diverse data
bases
- 80% of government data has
spatial component
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- Past –
- Several past coordination initiatives
- INGISI since 1997; Indiana Geographic Information Council since 2000
- Present –
- Local Community Information Systems
- Indiana Geographic Information Catalog
- Future –
- Distributed Data Clearinghouse
- Statewide Community Information
Systems and Atlases
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Notes
