Ohio 1994 Statewide Land Cover

The land cover inventory for the State of Ohio was produced by the digital image processing of Landsat Thematic Mapper Data. The Thematic Mapper is a multi-spectral scanner that collects electromagnetic radiation reflected from the earth's surface in the visible, near infrared and mid infrared wavelength bands.

The resolution of the Thematic Mapper data is a 30 meter by 30 meter cell. The computer analysis of the data isolates unique spectral classes that relate to land cover characteristics.

The land cover inventory was produced from Thematic Mapper data acquired in September and October 1994. The data was classified into the general land cover categories of:

  1. URBAN (open impervious surfaces: roads, buildings, parking lots and similar hard surface areas which are not obstructed from aerial view by tree cover.) See 7. BARREN
  2. AGRICULTURE/OPEN URBAN AREAS (cropland and pasture; parks, golf courses, lawns, and similar grassy areas not obstructed from aerial view by tree cover.)
  3. SHRUB/SCRUB (young, sparse, woody vegetation; typically areas of scattered young tree sapplings)
  4. WOODED (deciduous and coniferous)
  6. NON FORESTED WETLANDS (includes wetlands identified from the 1994 Thematic Mapper data as well as from the Ohio Wetland Inventory---see below.)
  7. BARREN (strip mines, quarries, sand and gravel pits, beaches.) Many of the URBAN features identified in this inventory are constructed from materials obtained from the BARREN features. Because of this, there will on occassion be URBAN areas identified as BARREN as well as BARREN areas identified as URBAN.

The Ohio Wetland Inventory was produced from the image processing of Thematic Mapper data acquired in the spring of 1985 and/or 1987. The inventory shows areas of shallow marsh (emergent vegetation in water 3 feet of less), shrub scrub wetland (emergent woody vegetation in water 3 feet or less), wet meadow (wet grass areas in water less than 6 inches, on hydric soils) and farmed wetland (wet meadow in agriculture areas, on hydric soils).

The land cover information reflects the conditions of the satellite data during the specific year and season the data was acquired. The wetland sites shown should be field reviewed for jurisdictional purposes.

The Thematic Mapper data was processed using ERDAS image processing software.

Questions or comments:

Bruce Motsch
Division of Real Estate and Land Management
Ohio Department of Natural Resources
1952 Belcher Drive C-2
Columbus, Ohio 43224
fax: (614)267-2981