What is it? Simply put, framework data are the basics. They are the map layers that
are of the most use to the most people. It includes categories like transportation, boundaries,
and topography.
For the past several years, IGIC members, workgroups and committees have been working together to identify and
define framework data. Below is a list of that data, grouped by category and showing specific layers in each.
Click on one of the category names to see descriptions and what's available.
Click again to view and download data through the web map services website,
a project made possible through a partnership between the
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1. Boundaries and
Governmental Units
The different types of boundaries the government uses to organize itself and information.
|
Layer |
Description |
| PLSS - COUNTY (LINE) |
The Public Land Survey System that show the county boundaries as lines. |
| PLSS - COUNTIES (POLYGON) |
The Public Land Survey System that show the county boundaries as polygons. |
| PLSS - STATE (LINE) |
The Public Land Survey System that show the State boundary as a line. |
| PLSS - STATE (POLYGON) |
The Public Land Survey System that show the State boundary of Indiana as a polygon. |
| Census Blocks |
The smallest geographic unit used by the U.S. Census Bureau for collecting and reporting information. |
| Census Blockgroups |
An area that includes several Census blocks. |
| Census Tracts |
An area made up of Blockgroups and designed to include 2,500 to 8,000
people whose boundaries change infrequently. |
| U.S. Congressional Districts [109th Congressional Districts] |
Voting districts for the 109th session of the U.S. House of Representatives. |
| State House Districts [114 Gen. Assembly - House] |
The boundaries of Indiana House Districts. |
| State Senate Districts [114 Gen. Assembly - Senate] |
The boundaries of Indiana Senate Districts. |
| USGS Quadrangle (1:100,000) |
This is the grid index for USGS 1:100,000 scale mapping.
Each polygon includes the official USGS map (quadrangle) name and index number. |
| USGS Quadrangle (1:24,000) |
This is the grid index for USGS 7.5-minute (1:24,000-scale) scale mapping.
Dates of publication and photorevision of paper maps published by the U.S. Geological Survey are also provided. |
| USGS Quadrangle (1:250,000) |
This is the grid index for USGS 1:250,000 scale mapping. Each polygon includes the
official USGS map (quadrangle) name and index number. |
2.
Cadastral Information
This is the basis for all land ownership mapping. It is used to show past, current and future rights
and interest in real property, surveys, legal descriptions, parcels, cadastral reference systems
(e.g. PLSS, and publicly administered parcels (military, state parks, etc.))
|
Layer |
Description |
| PLSS - SECTIONS (LINE) |
The Public Land Survey System showing land survey section boundaries as lines. |
| PLSS - SECTIONS (POLYGONS) |
The Public Land Survey System showing land survey section boundaries as polygons. |
| PLSS - TOWNSHIPS (LINE) |
The Public Land Survey System showing township and range lines in line format. |
| PLSS - TOWNSHIPS (POLYGON) |
The Public Land Survey System showing township and range lines as polygons. |
3. Elevation
These show topography and elevations of land surfaces.
|
Layer |
Description |
| Contours - 1:24,000 USGS |
Elevation contours from the U.S. Geological Survey. |
| Digital Elevation Model |
An alternative way to display elevation. |
4. Geodetic
Control
A network of carefully measured points that can be used as a reference for surveys or to
establish or measure accuracy in map making.
|
Layer |
Description |
| BENCHMARKS (INDOT) |
Permanent elevation markers. They may be brass, bronze and typically in concrete. |
5. Hydrography
All the water bodies and wetlands.
|
Layer |
Description |
| Hydrography Lines |
All streams, rivers, canals, and ditches. |
| Hydrography Polygons |
Larger lakes, ponds, rivers, large streams, and swamps or marshes. |
| Wetland Lines |
Wetlands, lakes, ponds, streams and other water resources. Intended
to be used with the Wetland Polygons dataset. |
| Wetland Polygons |
Wetlands, lakes, ponds, streams and other water resources. Intended
to be used with the Wetland Lines dataset. |
6. Ortho-Imagery
Aerial photographic images that are enhanced to have the properties of a map.
|
Layer |
Description |
| 2003 NAIP Aerial Photos |
1 meter resolution color aerial photography. The images have been orthorectified and
show summer leaf foliage. They are available only by county and in MrSID file format. |
| 1998-99 Aerial Photos |
1 meter Black and white aerial photography that has been orthorectified. |
| Topographical Maps |
Scanned image of the classical U.S. Geological Survey (USGS) topographic map. |
7. Transportation
|
Layer |
Description |
| HIGHWAYS (INDOT) |
Interstate, U.S. and state highways |
| RAILROAD 100K (NTAD) |
The rail system in Indiana. Includes old railways that have been abandoned. |