Level IV land use/land cover codes, classes, and definitions:
      1100 Urban Commercial/Industrial
      1200 Urban Residential
      1300 Urban-Openland
      1400 Urban-Woodland
      1500 Urban-Water
      2110 Non-Irrigated Corn
      2111 Irrigated Corn
      2120 Non-Irrigated Soybean
      2121 Irrigated Soybean
      2130 Non-Irrigated Sorghum
      2131 Irrigated Sorghum
      2210 Non-Irrigated Winter Wheat
      2211 Irrigated Winter Wheat
      2310 Non-Irrigated Alfalfa
      2311 Irrigated Alfalfa
      2400 Fallow
      2500 Double-Crop
      3100 Conservation Reserve Program
      3200 Warm-Season Grassland
      3300 Cool-Season Grassland
      3400 Periodic Emergent Vegetation
      4000 Woodland
      5000 Water
      6000 Other

Level III land use/land cover codes, classes, and definitions:
      110 Urban Commercial/Industrial
      120 Urban Residential
      130 Urban-Openland
      140 Urban-Woodland
      150 Urban-Water
      211 Corn
      212 Soybean
      213 Sorghum
      221 Winter Wheat
      231 Alfalfa
      240 Fallow
      250 Double-Crop
      310 Conservation Reserve Program
      320 Warm-Season Grassland
      330 Cool-Season Grassland
      340 Periodic Emergent Vegetation
      400 Woodland
      500 Water
      600 Other

Level II land use/land cover codes, classes, and definitions:
      11 Urban Commercial/Industrial
      12 Urban Residential
      13 Urban-Openland
      14 Urban-Woodland
      15 Urban-Water
      21 Summer Crop
      22 Spring Crop
      23 Alfalfa
      24 Fallow
      25 Double-Crop
      31 Conservation Reserve Program
      32 Warm-Season Grassland
      33 Cool-Season Grassland
      34 Periodic Emergent Vegetation
      40 Woodland
      50 Water
      60 Other

Level I land use/land cover codes, classes, and definitions:
      11 Urban Commercial/Industrial
      12 Urban Residential
      13 Urban-Openland
      14 Urban-Woodland
      15 Urban-Water
      20 Cropland
      30 Grassland      
      31 Conservation Reserve Program
      40 Woodland
      50 Water
      60 Other

      Commercial/Industrial (class code 11)- commercial/industrial land consists of areas of intensive use with much of the land covered by structures or other hard surfaces. These areas are used predominantly for the manufacture and sale of products and/or services. This category includes the central business districts of cities, towns, and villages; suburban shopping centers and strip developments; educational, governmental, religious, health, correctional and institutional facilities; industrial and commercial complexes; and communications, power, and transportation facilities. The main buildings, secondary structures, and areas supporting the basic use are all included - office buildings, warehouses, driveways, parking lots, landscaped areas, streets, etc. Highways or interstate systems running through the core of urban areas, are also included in this class.

      Residential (class code 12)- residential land consists of areas of medium density housing characterized by a more or less even distribution of vegetative cover and houses/garages, to high density housing characterized  by multi-unit structures such as apartment complexes. Linear residential developments along transportation routes extending outward from urban areas are included. Rural subdivisions not directly connected to the core of an urbanized area are also included. The main buildings, secondary structures, and immediate surrounding landscape are all included (i.e., house, apartment complexes, streets, garages, driveways, parking areas, lawns, trees, etc.).

      Urban-Openland (class code 13)- urban-openland consists of areas with uses such as golf courses, zoos, urban parks, cemeteries, and undeveloped land within an urban setting. Low density rural residential areas may also be included in this category. This category also includes tracts of land that have been zoned residential or commercial, but have yet to be developed.

      Urban-Woodland (class code 14)- urban-woodland consists of wooded tracts within a town or city. These wooded tracts maybe associated with golf courses, zoos, urban parks, and other undeveloped land.

      Urban-Water (class code 15)- urban-water consists of any open surface water within a town or city. This includes ponds, lakes, sewage settling ponds, etc.

      Cropland (class code 20)- cropland includes all areas with actively growing row crop and small grains, as well as harvested lands, fallow land, and large, uniform areas of bare, plowed ground.

      Grassland (class code 30)- this category includes all pasture (hayed land), rangeland, and other grasslands having insufficient trees and/or shrubs to be classified as "woodland". It does NOT include conservation reserve program (CRP) land.

      Conservation Reserve Program (CRP) Land  (class code 31)- this category includes all lands enrolled in the conservation reserve program as determined by the 2005 Common Land Unit (CLU) database.

      Woodland (class code 40) - this class includes any wooded areas having a canopy closure of 50% and greater.

      Water (class code 50) - all open water bodies, including reservoirs, lakes, ponds, rivers and streams. Ephemeral streams may not be represented.

      Other (class code 60)- the "other" class is used to identify land cover land use classes not previously defined. In general, this class is used for exposed bare ground other than cropland. Examples include rock quarries, sand and gravel pits, sandbars, and built-up areas less than 40 acres.