dem-lores

Frequently-anticipated questions:

• What does this data set describe?
  1. How should this data set be cited?
  2. What geographic area does the data set cover?
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
  5. What is the general form of this data set?
  6. How does the data set represent geographic features?
  7. How does the data set describe geographic features?
• Who produced the data set?
  1. Who are the originators of the data set?
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
• Why was the data set created?
• How was the data set created?
  1. Where did the data come from?
  2. What changes have been made?
• How reliable are the data; what problems remain in the data set?
  1. How well have the observations been checked?
  2. How accurate are the geographic locations?
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
  5. How consistent are the relationships among the data, including topology?
• How can someone get a copy of the data set?
  1. Are there legal restrictions on access or use of the data?
  2. Who distributes the data?
  3. What's the catalog number I need to order this data set?
  4. What legal disclaimers am I supposed to read?
  5. How can I download or order the data?
• Who wrote the metadata?

Title: dem-lores

Abstract:

Digital Elevation Model for Illinois River Basin. It is generalized to 1/2 mile resolution from the 30 meter resolution DEMs created in 7.5 minute quad pieces by the USGS and mosiaced by the Illinois State Geological Survey

1. How should this data set be cited?

   Illinois State Water Survey, September 2000, dem-lores.

   Online Links:

   • <http://www.isws.illinois.edu>

   Other_Citation_Details: Derived from USGS 30 meter digital elevation model

2. What geographic area does the data set cover?

   West_Bounding_Coordinate: -91.198156

   East_Bounding_Coordinate: -87.467245

   North_Bounding_Coordinate: 42.493135

   South_Bounding_Coordinate: 38.885728

3. What does it look like?

4. Does the data set describe conditions during a particular time period?

   Calendar_Date: Late 1990s

   Currentness_Reference: ground condition

5. What is the general form of this data set?

   Geospatial_Data_Presentation_Form: raster digital data

6. How does the data set represent geographic features?
   1. How are geographic features stored in the data set?

      This is a Raster data set. It contains the following raster data types:

      • Dimensions 496 x 389 x 1, type Grid Cell

   2. What coordinate system is used to represent geographic features?

      The map projection used is Lambert Conformal Conic.

      Projection parameters:

      Standard_Parallel: 33.000000

      Standard_Parallel: 45.000000

      Longitude_of_Central_Meridian: -89.500000

      False_Easting: 2999994.000000

      False_Northing: 0.000000

      Planar coordinates are encoded using row and column
      Abscissae (x-coordinates) are specified to the nearest 2640.000000
      Ordinates (y-coordinates) are specified to the nearest 2640.000000
      Planar coordinates are specified in survey feet

      The horizontal datum used is North American Datum of 1927.
      The ellipsoid used is Clarke 1866.
      The semi-major axis of the ellipsoid used is 6378206.400000.
      The flattening of the ellipsoid used is 1/294.978698.
      

7. How does the data set describe geographic features?

   Band_1

   Order_ID

   Value

   Count

1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
   • Illinois State Water Survey

2. Who also contributed to the data set?

3. To whom should users address questions about the data?

   Illinois State Water Survey
   c/o Kingsley M. Allan
   GIS Manager
   

   (217)333-0545 (voice)
   (217)333-6540 (FAX)
   k-allan@uiuc.edu
   

   Hours_of_Service: Monday to Friday 8 a.m. to 5 p.m.

This DEM was created especially for rapid computer refresh of the entire watershed, and for printing at a scale of 1 inch equals 40 miles.

1. Where did the data come from?

2. What changes have been made?

Are there legal restrictions on access or use of the data?

Access_Constraints:

No access constraint other than don't hold ISWS responsible for anything bad resulting from using this data

Use_Constraints: No constraints

1. Who distributes the data set?[Distributor contact information not provided.]

2. What's the catalog number I need to order this data set?

3. What legal disclaimers am I supposed to read?

4. How can I download or order the data?
   • Availability in digital form:

     Data format:	GRID Size: 0.191
     Network links:	\\gisserv_isws\illidata\illinois_basin\dem-lores

   • Cost to order the data:

Dates:

Last modified: 20-Sep-2000

Metadata author:

Illinois State Water Survey
c/o Kingsley M. Allan
GIS Manager
2204 Griffith Drive
Champaign, Illinois. 61820
USA

(217)333-0545 (voice)
(217)333-6540 (FAX)
k-allan@uiuc.edu

Hours_of_Service: Monday to Friday from 8 a.m. to 5 p.m.

Metadata standard:

FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)

Metadata extensions used:

• <http://www.esri.com/metadata/esriprof80.html>