icon to install the application, click on the 
icon to open the ArcExplorer Manual. Once ArcExplorer is installed the
maps can be opened by clicking on the 
or by browsing to the files from within ArcExplorer.Geographic Information System Documents
All of the data files and Geographic Information System coverages that were used to analyze the data and generate the maps for the Assessment Report are provided on this Compact Disc. Three different methods are available for accessing this information:
For
Users without GIS experience and without ESRI's ArcView software, ESRI's free
ArcExplorer application is provided along with its' Users Manual in Adobe
Acrobat format. Click on the
icon to install the application, click on the
icon to open the ArcExplorer Manual. Once ArcExplorer is installed the
maps can be opened by clicking on the
or by browsing to the files from within ArcExplorer.
Install ESRI's ArcExplorer
Install
Adobe Acrobat Reader
View ArcExplorer 2.0 Manual (PDF File)
Projects:
Map 1.2-1 Chesapeake Basin Watersheds
Map 2.1-1 Surficial Geology
Map 2.1-2 Subsurface Geology
Map 2.1-3 Geologic Cross Section (Not Available in ArcExplorer)
Map 2.1-4 Hydrogeomorphic Regions
Map 2.1-5 Ground-Water Recharge Potential
Map 2.1-6 Hydric Soils
Map 2.1-7 Soil Erodibility
Map 2.1-8 Soil Types
Map 2.1-9 Septic System Suitability
Map 2.2-1 1984 Land Use
Map 2.2-2 1992 Land Use
Map 2.2-3 1997 Land Use
Map 2.2-4 Agricultural Preservation Districts
Map 2.2-5 State Investment Areas
Map 2.3-1 Known and Potential Nutrient Sources
Map 2.3-2 Known and Potential Chemical Sources
Map 2.3-3 Known and Potential Chemical Sources - City Details
Map 2.4-1 Air Sources
Map 2.5-1 Surface-Water Monitoring Locations
Map 2.5-2 Total Phosphorus Concentrations and Trends
Map 2.5-3 Total Nitrogen Concentrations and Trends
Map 2.5-4 Dissolved Oxygen Concentrations and Trends
Map 2.5-5 Water Table Elevation
Map 2.5-6 Water Resource Protection Areas
Map 2.5-7 Ground-Water Monitoring Locations
Map 2.5-8 Nitrate Concentrations in Selected Wells
Map 2.5-9 Domestic Well Densities
Map 2.5-10 Chloride Concentrations in Selected Wells
Map 2.5-11 Iron Concentrations in Selected Wells
Map 2.5-12 Public Water-Supply Well Locations
Map 2.5-13 Industrial Well Densities
Map 2.5-14 Irrigation Well Densities
Map 2.5-15 Combined Well Densities
Map 2.5-16 Maximum Daily Ground-Water Use
Map 2.6-1 Wetland Locations
Map 2.6-2 Drainage Ditch Areas
Map 2.7-1 Living Resources
Map 2.8-1 Growth Patterns
Map 2.8-2 Recreation Sites
For Users with ArcView GIS experience and/or software, a complete ArcView project containing all of the Views and Layouts is also provided. This file must be accessed by browsing to it from within ArcView. Trying to open the project by double-clicking on the chesapeake.apr file will start ArcView, but will not be able to find the project. All of the shapefiles used in the maps are included in subject-specific subdirectories.
Open Project Directory
Open Shapefile Directory
For more experienced ArcView GIS users, the View and Layout Documents needed for each of the maps are provided as individual ArcView Object Data Base (ODB) files. To simplify the use of these files, a custom ArcView extension (ODB_Docs.avx) is also included that enables the import, export and cloning of these ODB files in any ArcView Project. For ease of use, an empty project (ODB.apr) is included that has this extension already loaded with a read me file explaining how to use the tools. For users that want to use this extension in other ArcView Projects, the ODB_Docs.avx file must be copied into their ArcView Extensions directory (default location for ArcView 3.0 is ESRI\AV_GIS30\ARCVIEW\EXT32).
Open Project Directory
Open ODB File Directory
Open Project Directory
Map 1.2-1 Chesapeake Basin Watersheds
Map 2.1-1 Surficial Geology
Map 2.1-2 Subsurface Geology
Map 2.1-3 Geologic Cross Section
Map 2.1-4 Hydrogeomorphic Regions
Map 2.1-5 Ground-Water Recharge Potential
Map 2.1-6 Hydric Soils
Map 2.1-7 Soil Erodibility
Map 2.1-8 Soil Types
Map 2.1-9 Septic System Suitability
Map 2.2-1 1984 Land Use
Map 2.2-2 1992 Land Use
Map 2.2-3 1997 Land Use
Map 2.2-4 Agricultural Preservation Districts
Map 2.2-5 State Investment Areas
Map 2.3-1 Known and Potential Nutrient Sources
Map 2.3-2 Known and Potential Chemical Sources
Map 2.3-3 Known and Potential Chemical Sources - City Details
Map 2.4-1 Air Sources
Map 2.5-1 Surface-Water Monitoring Locations
Map 2.5-2 Total Phosphorus Concentrations and Trends
Map 2.5-3 Total Nitrogen Concentrations and Trends
Map 2.5-4 Dissolved Oxygen Concentrations and Trends
Map 2.5-5 Water Table Elevation
Map 2.5-6 Water Resource Protection Areas
Map 2.5-7 Ground-Water Monitoring Locations
Map 2.5-8 Nitrate Concentrations in Selected Wells
Map 2.5-9 Domestic Well Densities
Map 2.5-10 Chloride Concentrations in Selected Wells
Map 2.5-11 Iron Concentrations in Selected Wells
Map 2.5-12 Public Water-Supply Well Locations
Map 2.5-13 Industrial Well Densities
Map 2.5-14 Irrigation Well Densities
Map 2.5-15 Combined Well Densities
Map 2.5-16 Maximum Daily Ground-Water Use
Map 2.6-1 Wetland Locations
Map 2.6-2 Drainage Ditch Areas
Map 2.7-1 Living Resources
Map 2.8-1 Growth Patterns
Map 2.8-2 Recreation Sites