Beginning in 1990, portions of the land use inventories were adjusted to fit large-scale (1"=200' scale or 1"=100' scale) cadastral mapping where such mapping was completed at the time of inventory. Therefore, ninety percent or more of all well-defined planimetric features in portions of the 1990, 1995, and 2000 land use digital map files are within 6.6 feet of their true position on the ground. For the remaining portions of the 1990, 1995, and 2000 land use digital map files, ninety percent or more of all well-defined planimetric features in these areas are within 13.3 feet of their true position on the ground.
In the 1980's, the GIS Division staff began digitizing the hardcopy land use delineations to convert the maps into digital format. In 1995, the Commission acquired digital and hardcopy orthophotography which was incorporated into the land use inventory collection process. For the 1995 and 2000 inventories, GIS Divison staff prepared 1" = 400' scale or 1" = 200' scale hardcopy plots of previous land use boundaries, together with available property boundaries, on the orthophotography. The Land Use Division delineated current land use boundaries with reference to property boundaries and ancillary materials, such as land use information prepared by local municipalities. The delineations were then digitized by the GIS Division and hardcopy plots were reviewed by the Land Use Division. The 2000 land use inventory was collected to fit property boundary lines where necessary for more than 90 percent of the Region where digital cadastral mapping was available at the time of inventory.
The digital files contain land use polygon features digitized from land use areas initially delineated on hardcopy products (1" = 400' scale aerial photos and maps) for each year of inventory. The 1990, 1995, and 2000 inventories contain polygons that have been adjusted to fit large-scale cadastral mapping where such mapping had been completed at the time of inventory collection. The land use polygons are identified by an attribute consisting of a three-digit code and optional one-character suffix corresponding to the Commission's land use classification system. The land use codes for the year 2000 Land Use Inventory are provided below.
SEWRPC 2000 LAND USE CODES
RESIDENTIAL
111 ........ Single-Family Residential
120 ........ Two-Family Residential
141 ........ Multi-Family Low Rise (1-3 stories)
142 ........ Multi-Family High Rise (4 or more stories)
150 ........ Mobile Homes
199 ........ Residential Land Under Development
COMMERCIAL
210 ........ Retail Sales and Service--Intensive
220 ........ Retail Sales and Service--Nonintensive
299 ........ Retail Sales and Service Land Under Development
INDUSTRIAL
310 ........ Manufacturing
340 ........ Wholesaling and Storage
360 ........ Extractive
399 ........ Industrial Land Under Development
TRANSPORTATION (Motor Vehicle-Related)
411 ........ Freeway
414 ........ Standard Arterial Street and Expressway
418 ........ Local and Collector Streets
425 ........ Bus Terminal
426 ........ Truck Terminal
TRANSPORTATION (Off-Street Parking)
430 ........ Multiple Land Use-Related
431 ........ Residential-Related
432 ........ Retail Sales and Service-Related
433 ........ Industrial-Related
434 ........ Transportation-Related
435 ........ Communication and Utilities-Related
436 ........ Government and Institution-Related
437 ........ Recreation-Related
TRANSPORTATION (Rail-Related)
441........ Track Right-of-Way
443........ Switching Yards
445........ Stations and Depots
TRANSPORTATION (Air-Related)
463........ Air Fields
465........ Air Terminals and Hangars
485........ Ship Terminal
499........ Transportation Land Under Development
COMMUNICATION AND UTILITIES
510 ........ Communication and Utilities
599 ........ Communication and Utility Land Under Development
GOVERNMENT AND INSTITUTIONAL
611 ........ Local - Administrative, Safety, and Assembly
612 ........ Regional - Administrative, Safety, and Assembly
641 ........ Local - Educational
642 ........ Regional - Educational
661 ........ Local - Group Quarters
662 ........ Regional - Group Quarters
681 ........ Local - Cemeteries
682 ........ Regional - Cemeteries
699 ........ Government and Institutional Land Under Development
RECREATIONAL
711 ........ Public - Cultural/Special Recreation Areas
712 ........ Nonpublic - Cultural/Special Recreation Areas
731 ........ Public - Land-Related Recreation Areas
732 ........ Nonpublic - Land-Related Recreation Areas
781 ........ Public - Water-Related Recreation Areas
782 ........ Nonpublic - Water-Related Recreation Areas
799 ........ Recreation Land Under Development
AGRICULTURAL
811 ........ Cropland
815 ........ Pasture and Other Agriculture
816 ........ Lowland Pasture
820 ........ Orchards and Nursery
841 ........ Special Agriculture
871 ........ Farm Building
OPEN LANDS
910 ........ Wetlands
921 ........ Urban Unused Lands
922 ........ Rural Unused Lands
930 ........ Land Fills and Dumps
940 ........ Woodlands
950 ........ Surface Water
Supplemental Land Use Suffix Codes **
X ......... High-density Residential (7.0-17.9 dwelling units/net residential acre)
M ......... Medium-density Residential (2.3-6.9 dwelling units/net residential acre)
L ......... Low-density Residential (0.7-2.2 dwelling units/net residential acre)
S ......... Suburban-density Residential (0.2-0.6 dwelling units/net residential acre)
F ......... Woodlands
G ......... Wetlands
H ......... Unused Lands
______________________________________________________________
** Supplemental land use suffix codes F, G, and H identify natural resource features and open space lands which may occur within certain urban uses. Residential density codes apply only to the single-family residential classification (111).
Abbreviated Description: <http://www.sewrpc.org/regionallandinfo/metadata/sewrpc_2000_lu_codes.pdf>
Detailed Description: <http://www.sewrpc.org/regionallandinfo/metadata/sewrpc_2000_lu_classifications.pdf>