Available Data
- Transportation Features
- Political and Administrative Features
- Geographic Reference Data
- Environmental Features
- County Based Data
Each ".zip" file that you may download from this site contains a suite of files comprising the named data set. These files represent standard ESRI data storage formats - ESRI shape files, ArcInfo coverages and (NEW) XML Workspace documents. Each data set's specific data storage format is detailed in its descriptive report, accessible on this site by clicking the data set's "title" link. (see 'How to Use the GeoData Catalog')
Consider a typical suite of data called Geodata.zip, for example. This .zip file of ESRI shape file data would contain the following files:
| File Type (extensions) | Description of File |
|---|---|
| Geodata.dbf | data table component of shape file |
| Geodata.shp | graphic data component of shape file |
| Geodata.shx | 3rd essential component of shape file |
| Geodata.htm | metadata report in html format |
| Geodata.txt | metadata report in ASCII text, FGDC-encoded for metadata database import |
The following optional files may appear, depending on the characteristics of the data set:
| File Type (extensions) | Description of File |
|---|---|
| Geodata.ddi | data dictionary of attributes in ASCII text |
| Geodata.sbn, .shx, .ain, .aix | additional shapefile components |
| readme.txt | special instructions or cautions about data usage |
Some data sets include data in ESRI coverage format. Coverages are made of a pair of directories that contain special files storing the geographic information. For the example above, we would find:
| Type | Description |
|---|---|
| Geodata | directory of files that produce the graphic representation of the data |
| Info | directory of files of attribute data |
| Log | File of transaction history of the coverage in ASCII text |
Please direct questions and comments to:
Michelle Blake 360-705-7797