|
Geographic Information Systems (GIS) Data Sets Shown on this list are GIS data sets that are commonly used in basic Community Resource Inventory map sets. The majority of these data sets were either processed or subset from data courtesy of the Connecticut Department of Environmental Protection and/or the Massachusetts Geographic Information System. This list is not intended to be exhaustive; other data sets are either available or can be generated through analysis of the maps supplied for a Community Resource Inventory. * - Data set covers only the Connecticut region of the Quinebaug-Shetucket National Heritage Corridor. Town Boundaries: Line and polygon-based data sets that include the boundaries of each of the thirty-five towns located within the Quinebaug-Shetucket National Heritage Corridor. Topography: Continuous data that include all the visual features found on United States Geological Survey 7.5-minute topographic maps. These data are available separately either for the Connecticut or the Massachusetts region of the Corridor. Orthographic Aerial photography: Digital aerial photography that has been corrected for distortion and referenced for use on maps. Black-and-white orthographic aerial photography available for the Connecticut region of the Corridor was processed from aerial photography taken in the spring of 2004. Color orthographic aerial photography for the Massachusetts region of the Corridor were processed from aerial photography taken in 2005. Land Cover Categories: Data derived from LANDSAT satellite data that depict the general land cover in a given area. Simplified categories include forested areas, wetlands, agriculture or tall grasses, turf or lawn, barren land, water, and areas of development, roads, or utility right-of ways. These data were processed from data generated originally by the Center for Land Use Education, Department of Natural Resources Management and Engineering, College of Agriculture and Natural Resources, University of Connecticut. Surficial Materials*: Data that describes the textures of either glacial or more recent soil deposits. This data set covers only the Connecticut region of the Corridor, and was subset from a Connecticut statewide surficial materials data set published by the United States Geological Survey and the Connecticut Department of Environmental Protection, Environmental and Geographic Information Center. Water Quality Classifications*: Quality classifications of groundwater and surface water bodies. These data are available in three separate data sets, which were subset from Connecticut statewide water quality classifications data courtesy of the Connecticut Department of Environmental Protection, Environmental and Geographic Information System, and the Connecticut Department of Environmental Protection, Bureau of Water Management. Roads: Data used primarily for location reference. These data are generally classified as limited-access highways (interstate routes), other numbered routes, and local roads. Hydrological Features: These data consist of two data sets that include such features as lakes, ponds, rivers, streams, marshes, and other features that are commonly related to hydrological features. Soils: Data depicting different soils types and classifications. Currently these soils data are in two separate data sets, one for the Connecticut region of the Corridor, the other for the Massachusetts region. Farmland Soils*: Soils classified as prime farmland soils, or farmland soils of statewide importance. Wetland Soils*: Soils classified as wetland soils (wetlands in Connecticut are defined by soil types). Permanently Protected and Other Significant Open Space: Open space parcels that are protected from development, or are otherwise significant in terms of providing habitat and/or connecting corridors for wildlife species. Based on open space data from the Connecticut Department of Environmental Protection and the Massachusetts Geographic Information System, this data set has been supplemented with additional open space data from a variety of different knowledgeable sources. This data set is updated often as additional open space data and information become available to us. Potential Stratified Drift Aquifer Areas*: These data depict areas that carry the potential for containing stratified drift aquifers, which are a critically important source of drinking water. This data set was processed from, or generated based on data courtesy of the United States Geological Survey, Connecticut Department of Environmental Protection, and the Connecticut Water Resources Commission. Natural Diversity Database Sites*: This data set was subset from Connecticut Statewide data, and shows approximate locations of observations of unnamed rare and endangered wildlife species, each occurrence shown as a circular area with a ¼-mile radius; the location of the species is somewhere within that circular area. Watershed Basin Boundaries*: This data set includes the boundaries of major, regional, and subregional watershed basins. Areas with High Probability of Archaeological Findings*: Areas that are thought to carry a high potential for containing archaeological artifacts, based on specific soil types and proximity to certain waterways as recommended by the Office of the Connecticut State Archaeologist. Property Parcel Boundaries: Town-wide GIS version of tax assessor map data, generally supplied by a town that has had that data processed into GIS form. Trails: Currently data depicting trails are in the process of being generated into GIS format. Comprehensive data depicting Blue-Blazed Trails throughout the State of Connecticut are presently in GIS format. Further information on Blue-Blazed Trails data can be obtained from the Connecticut Forest and Park Association. Waterways with Known Wild Trout Populations: This data set is usually generated on a town by town basis, using a combination of streams, lakes, ponds, and/or rivers from the Hydrological Features data set in conjunction with data provided by the Connecticut Department of Environmental Protection, Bureau of Natural Resources, Fisheries Division. |
||||