Land Use Codes: 100 Level
111	Residential  Less than 2 units per acre.
112	Residential  2.1 to 7 units per acre (villages, neighborhoods, highway strip houses).
113	Residential  More than 7 units per acre (trailer parks, apartment buildings, condominiums, row homes).
114	Farmsteads  Farm houses, usually associated with and including, barns and outbuildings. (NOT including large, commercial-sized hog/chicken operations - #230). Agricultural production may or may not be active.
120	Commercial and services  Any apparent store, shop, mall, gas station or place of business where large-scale production is not occurring.
130	Industrial  Large buildings that may have production in process.
140	Transportation and utilities  Wide transportation corridors (including 4-lane divided highways), toll booth areas, highway departments, transmission stations, water towers/tanks, sewage treatment plants.
150	Industrial and commercial complexes  Large areas where there are many adjacent industrial plants and/or other businesses. Only used when unable to determine the exact use as either 120 or 130.
160	Mixed urban or built-up land  Densely developed land generally associated with urban centers. This category is often comprised of a mix of other developed land categories (i.e. 113, 120, 150, and 180) and is generally only used where development patterns are too complex to easily delineate separate developed land categories. For this project, this category will be rarely (if ever) used because the 300-scale photos appear to be sufficiently detailed to allow discrimination of separate categories.
170	Other  Areas whose land use does not fit into any particular category or can not be interpreted from the aerial photography.
180	Institutional  Schools, hospitals, or other institutional facilities. Churches and adjoining cemeteries. Stand-alone municipal buildings, including parking/storage areas for municipal equipment (i.e. snow plows). Also, stand-alone fire houses. Usually large buildings, surrounding access road with parking areas some landscaping, well-kept grounds.
190	Recreational  Active Recreation Parks (i.e. ball fields, playgrounds, tennis courts). Also campgrounds, golf courses, hunt clubs.