Description: The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's surface water drainage system. NHD data was originally developed at 1:100,000-scale and exists at that scale for the whole country. This high-resolution NHD, generally developed at 1:24,000/1:12,000 scale, adds detail to the original 1:100,000-scale NHD. (Data for Alaska, Puerto Rico and the Virgin Islands was developed at high-resolution, not 1:100,000 scale.) Local resolution NHD is being developed where partners and data exist. The NHD contains reach codes for networked features, flow direction, names, and centerline representations for areal water bodies. Reaches are also defined on waterbodies and the approximate shorelines of the Great Lakes, the Atlantic and Pacific Oceans and the Gulf of Mexico. The NHD also incorporates the National Spatial Data Infrastructure framework criteria established by the Federal Geographic Data Committee.
Description: This layer represents the project location of both active and historic VWP General Permits for the state. The General Permit's number, name, and regional office are among several attributes in this layer. The attribute data was pulled from DEQ's Comprehensive Environmental Data System (CEDS) on May 13, 2016.
Definition Expression: N/A
Copyright Text: Virginia Department of Environmental Quality (DEQ)
Description: This layer represents the project location of both active and historic VWP Individual Permits for the state. The Individual Permit's number, name, and regional office are among several attributes in this layer. The attribute data was pulled from DEQ's Comprehensive Environmental Data System (CEDS) on May 13, 2016.
Definition Expression: N/A
Copyright Text: Virginia Department of Environmental Quality (DEQ)
Description: This layer represents the location of projects which No VWP Permit was required. The project’s name, and regional office are among several attributes in this layer. The attribute data was pulled from DEQ's Comprehensive Environmental Data System (CEDS) in May 2016.
Definition Expression: N/A
Copyright Text: Virginia Department of Environmental Quality (DEQ)
Description: Data obtained from the Virginia Department of Environmental Quality VEGIS Datasets webpage: http://www.deq.virginia.gov/ConnectWithDEQ/VEGIS/VEGISDatasets.aspx
Description: Virginia's 2016 Water Quality Monitoring Stations
Definition Expression: N/A
Copyright Text: This dataset was generated as a summary of monitoring sample data from many sources including DEQ field sampling stored in DEQ's Comprehensive Environmental Data System (CEDS).
Description: To improve permit compliance and appropriate preservation of wetlands, DEQ requires a comprehensive spatial record of wetland permits and identification of wetland losses and gains over time to support Virginia's statutory goal of no net loss of wetland acreage and function. This dataset is intended to begin the process of recording wetland preservations in a spatial database to identify those locations during future permitting.
The "Preservation_Points" dataset represents a notional indicator of the location of a wetland preservation. These records indicate that the general location of the preservation could be located but the preservation itself could not be delineated using standard photo-interpretive techniques (i.e., the preservation was too small).
Definition Expression: N/A
Copyright Text: Conservation Management Institute at Virginia Tech
Description: Mitigation Bank point locations. Data extracted from U.S. Army Corps of Engineers RIBITS (Regulatory in lieu fee and Bank Information Tracking System) web site.
Description: The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's surface water drainage system. NHD data was originally developed at 1:100,000-scale and exists at that scale for the whole country. This high-resolution NHD, generally developed at 1:24,000/1:12,000 scale, adds detail to the original 1:100,000-scale NHD. (Data for Alaska, Puerto Rico and the Virgin Islands was developed at high-resolution, not 1:100,000 scale.) Local resolution NHD is being developed where partners and data exist. The NHD contains reach codes for networked features, flow direction, names, and centerline representations for areal water bodies. Reaches are also defined on waterbodies and the approximate shorelines of the Great Lakes, the Atlantic and Pacific Oceans and the Gulf of Mexico. The NHD also incorporates the National Spatial Data Infrastructure framework criteria established by the Federal Geographic Data Committee.
Description: The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's surface water drainage system. NHD data was originally developed at 1:100,000-scale and exists at that scale for the whole country. This high-resolution NHD, generally developed at 1:24,000/1:12,000 scale, adds detail to the original 1:100,000-scale NHD. (Data for Alaska, Puerto Rico and the Virgin Islands was developed at high-resolution, not 1:100,000 scale.) Local resolution NHD is being developed where partners and data exist. The NHD contains reach codes for networked features, flow direction, names, and centerline representations for areal water bodies. Reaches are also defined on waterbodies and the approximate shorelines of the Great Lakes, the Atlantic and Pacific Oceans and the Gulf of Mexico. The NHD also incorporates the National Spatial Data Infrastructure framework criteria established by the Federal Geographic Data Committee.
Description: Virginia waters designated as "swamp waters" (or Class VII waters) by state code 9 VAC 25-260 as of January 6, 2011. Class VII waters are characterized by naturally occurring low pH and low dissolved oxygen caused by: (i) low flow velocity that prevents mixing and reaeration of stagnant, shallow waters and (ii) decomposition of vegetation that lowers dissolved oxygen concentrations and causes tannic acids to color the water and lower the pH. This layer is based on the delineations published in Virginia's Water Quality Standards, which is available at: http://law.lis.virginia.gov/admincode/title9/agency25/chapter260/
Description: The Watershed Boundary Dataset (WBD) is a comprehensive aggregated collection of hydrologic unit data consistent with the national criteria for delineation and resolution. It defines the areal extent of surface water drainage to a point except in coastal or lake front areas where there could be multiple outlets as stated by the "Federal Standards and Procedures for the National Watershed Boundary Dataset (WBD)" “Standard” (http://pubs.usgs.gov/tm/11/a3/). Watershed boundaries are determined solely upon science-based hydrologic principles, not favoring any administrative boundaries or special projects, nor particular program or agency. This dataset represents the hydrologic unit boundaries to the 12-digit (6th level) for the entire United States. Some areas may also include additional subdivisions representing the 14- and 16-digit hydrologic unit (HU). At a minimum, the HUs are delineated at 1:24,000-scale in the conterminous United States, 1:25,000-scale in Hawaii, Pacific basin and the Caribbean, and 1:63,360-scale in Alaska, meeting the National Map Accuracy Standards (NMAS). Higher resolution boundaries are being developed where partners and data exist and will be incorporated back into the WBD. WBD data are delivered as a dataset of polygons and corresponding lines that define the boundary of the polygon. WBD polygon attributes include hydrologic unit codes (HUC), size (in the form of acres and square kilometers), name, downstream hydrologic unit code, type of watershed, non-contributing areas, and flow modifications. The HUC describes where the unit is in the country and the level of the unit. WBD line attributes contain the highest level of hydrologic unit for each boundary, line source information and flow modifications.
Definition Expression: N/A
Copyright Text: Funding for the Watershed Boundary Dataset (WBD) was provided by the USDA-NRCS, USGS and EPA along with other federal, state and local agenciesies. Representatives from many agencies contributed a substantial amount of time and salary towards quality review and updating of the dataset in order to meet the WBD Standards. Acknowledgment of the originating agencies would be appreciated in products derived from these data. See dataset specific metadata for further information
Description: This layer represents the Multiple Project Site Mitigation (MPSM) boundaries for the state. The VWP permit's number, name, and regional office are among several attributes in this layer. MPSM boundaries are usually offsite from the VWP project location.
Definition Expression: N/A
Copyright Text: Virginia Department of Environmental Quality (DEQ)
Description: This layer represents the Permittee Responsible Mitigation Area (PRMA) boundaries for the state. The VWP permit's number, name, and regional office are among several attributes in this layer. The PRMA boundaries are drawn to represent the project mitigation are boundary which is usually onsite of the VWP project.
Definition Expression: N/A
Copyright Text: Virginia Department of Environmental Quality (DEQ)
Description: This layer represents the project boundaries of both active and historic VWP General Permits and VWP Individual Permits for the state. The VWP permit's number, name, and regional office are among several attributes in this layer. The permit boundaries are drawn to represent the project boundary map provided by the permittee.
Definition Expression: N/A
Copyright Text: Virginia Department of Environmental Quality (DEQ)
Description: The VA_TOWN dataset is a feature class component of the Virginia Administrative Boundaries dataset from the Virginia Geographic Information Network (VGIN). VA_COUNTY represents the best available city and county boundary information to VGIN.VGIN initially sought to develop an improved locality and town boundary dataset in late 2013, spurred by response of the Virginia Administrative Boundaries Workgroup community. The feature class initially started from the locality boundaries from the Census TIGER dataset for Virginia. VGIN solicited input from localities in Virginia through the Road Centerlines data submission process as well as through public forums such as the Virginia Administrative Boundaries Workgroup and VGIN listservs. Data received were analyzed and incorporated into the VA_COUNTY feature class where locality data were a superior representation of the city or county boundary.
Definition Expression: N/A
Copyright Text: Virginia Geographic Information Network (VGIN), and the Census and Localities and Towns submitting data to the project
Description: The "Preservation_Polygons" dataset represents a wetland preservation located using standard photo-interpretive techniques.
The "Property_Polygons" dataset represents a notional indicator of the location of a wetland preservation and generally indicate the entire property. These records indicate that the exact location of the preservation could not be located using standard photo-interpretive techniques.
Definition Expression: N/A
Copyright Text: Conservation Management Institute at Virginia Tech
Description: This data set a GIS-based landscape (Level one) assessment of the water quality and habitat benefits of non-tidal wetlands (NWI) in Virginia utilizing land cover from four years (2001, 2006, 2011, and 2016). The model assessment uses remote sensing and GIS technology to characterize land use patterns and features around wetlands such as surrounding land cover and density of roads as well as individual wetland characteristics such as wetland size and type to determine the wetlands overall condition as related to habitat and water quality functions. The water quality analysis determines the percentages of different land covers and features within the contributing drainage area of the wetland.
Definition Expression: N/A
Copyright Text: Nontidal wetland data is from the U.S. Fish and Wildlife Service National Wetlands Inventory.
Description: This dataset contains the boundaries for lands of conservation and recreational interest in Virginia. The Conservation Lands Database is constantly being edited and updated. Historic easements are held by the Virginia Board of Historic Resources and administered by the Virginia department of Historic Resources. Data is released to the public quarterly and posted to the download section of the website: http://www.dcr.virginia.gov/natural_heritage/cldownload.shtml
Description: Mitigation bank footprints. Data extracted from U.S. Army Corps of Engineers RIBITS (Regulatory in lieu fee and Bank Information Tracking System) web site.
Description: The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's surface water drainage system. NHD data was originally developed at 1:100,000-scale and exists at that scale for the whole country. This high-resolution NHD, generally developed at 1:24,000/1:12,000 scale, adds detail to the original 1:100,000-scale NHD. (Data for Alaska, Puerto Rico and the Virgin Islands was developed at high-resolution, not 1:100,000 scale.) Local resolution NHD is being developed where partners and data exist. The NHD contains reach codes for networked features, flow direction, names, and centerline representations for areal water bodies. Reaches are also defined on waterbodies and the approximate shorelines of the Great Lakes, the Atlantic and Pacific Oceans and the Gulf of Mexico. The NHD also incorporates the National Spatial Data Infrastructure framework criteria established by the Federal Geographic Data Committee.
Description: The National Hydrography Dataset (NHD) is a feature-based database that interconnects and uniquely identifies the stream segments or reaches that make up the nation's surface water drainage system. NHD data was originally developed at 1:100,000-scale and exists at that scale for the whole country. This high-resolution NHD, generally developed at 1:24,000/1:12,000 scale, adds detail to the original 1:100,000-scale NHD. (Data for Alaska, Puerto Rico and the Virgin Islands was developed at high-resolution, not 1:100,000 scale.) Local resolution NHD is being developed where partners and data exist. The NHD contains reach codes for networked features, flow direction, names, and centerline representations for areal water bodies. Reaches are also defined on waterbodies and the approximate shorelines of the Great Lakes, the Atlantic and Pacific Oceans and the Gulf of Mexico. The NHD also incorporates the National Spatial Data Infrastructure framework criteria established by the Federal Geographic Data Committee.
Description: This is a polygon coverage of Physiographic Divisions in the conterminous United States. It was automated from Fenneman's 1:7,000,000-scale map, "Physical Divisions of the United States," which is based on eight major 1946 divisions, 25 provinces, and 86 sections representing distinctive areas having common topography, rock types and structure, and geologic and geomorphic history.
Description: This data set is a digital soil survey and generally is the most detailed level of soil geographic data developed by the National Cooperative Soil Survey. The information was prepared by digitizing maps, by compiling information onto a planimetric correct base and digitizing, or by revising digitized maps using remotely sensed and other information. This data set consists of georeferenced digital map data and computerized attribute data. The map data are in a 7.5 minute quadrangle format and include a detailed, field verified inventory of soils and nonsoil areas that normally occur in a repeatable pattern on the landscape and that can be cartographically shown at the scale mapped. A special soil features layer (point and line features) is optional. This layer displays the location of features too small to delineate at the mapping scale, but they are large enough and contrasting enough to significantly influence use and management. The soil map units are linked to attributes in the National Soil Information System relational database, which gives the proportionate extent of the component soils and their properties.This metadata file contains specific information for Amelia County. It is used here as a representation of the SSURGO metadata. This dataset has been created by merging all of the ssurgo localities for Virginia. The Hydric soils information was obtained from the muaggatt table.
Description: Attribution for these Virginia parcels is limited to locality identification and parcel id. Tax parcel boundaries have not been edge-matched across municipal boundaries. The boundaries are intended for cartographic use and spatial analysis only, and not for use as legal descriptions or property surveys. Not all localities within the Commonwealth of Virginia have a digital record for parcel geography. Please visit: https://vgin.maps.arcgis.com/home/item.html?id=29627d7c051a47dc8ce71b4484531ab3
Description: This data set a GIS-based landscape (Level one) assessment of the water quality and habitat benefits of non-tidal contractor delineated wetlands in Virginia utilizing land cover from three years (2001, 2006, 2011, and 2016). The model assessment uses remote sensing and GIS technology to characterize land use patterns and features around wetlands such as surrounding land cover and density of roads as well as individual wetland characteristics such as wetland size and type to determine the wetlands overall condition as related to habitat and water quality functions. The water quality analysis determines the percentages of different land covers and features within the contributing drainage area of the wetland.
Name: Virginia Boundary with North Carolina APNEP Extension
Display Field: NAME
Type: Feature Layer
Geometry Type: esriGeometryPolygon
Description: The VA_TOWN dataset is a feature class component of the Virginia Administrative Boundaries dataset from the Virginia Geographic Information Network (VGIN). VA_COUNTY represents the best available city and county boundary information to VGIN.VGIN initially sought to develop an improved locality and town boundary dataset in late 2013, spurred by response of the Virginia Administrative Boundaries Workgroup community. The feature class initially started from the locality boundaries from the Census TIGER dataset for Virginia. VGIN solicited input from localities in Virginia through the Road Centerlines data submission process as well as through public forums such as the Virginia Administrative Boundaries Workgroup and VGIN listservs. Data received were analyzed and incorporated into the VA_COUNTY feature class where locality data were a superior representation of the city or county boundary.
Definition Expression: N/A
Copyright Text: Virginia Geographic Information Network (VGIN), and the Census and Localities and Towns submitting data to the project
Description: 401 Water Quality Certifications (WQC) permits have been received from the North Carolina DEQ. Please visit https://deq.nc.gov/about/divisions/water-resources/water-quality-permitting/401-buffer-permitting-branch/active-expired for more information.
Description: The APNEP boundary is based on the HUC-8 demarcations with the exception of around the White Oak River. APNEP only includes those areas of the White Oak basin which drain into the Bogue Sound as defined by the geographic center line of the White Oak River.
Name: Virginia and Select North Carolina County Boundaries
Display Field: NAME
Type: Feature Layer
Geometry Type: esriGeometryPolygon
Description: The VA_TOWN dataset is a feature class component of the Virginia Administrative Boundaries dataset from the Virginia Geographic Information Network (VGIN). VA_COUNTY represents the best available city and county boundary information to VGIN.VGIN initially sought to develop an improved locality and town boundary dataset in late 2013, spurred by response of the Virginia Administrative Boundaries Workgroup community. The feature class initially started from the locality boundaries from the Census TIGER dataset for Virginia. VGIN solicited input from localities in Virginia through the Road Centerlines data submission process as well as through public forums such as the Virginia Administrative Boundaries Workgroup and VGIN listservs. Data received were analyzed and incorporated into the VA_COUNTY feature class where locality data were a superior representation of the city or county boundary. Also includes North Carolina Counties that intersect the APNEP (Albemarle-Pamlico National Estuary Partnership) management boundary.
Definition Expression: N/A
Copyright Text: Virginia Geographic Information Network (VGIN), and the Census and Localities and Towns submitting data to the project; NC DEQ
NAME
(
type: esriFieldTypeString
, alias: Jurisdiction Name
, length: 100
)
NAMELSAD
(
type: esriFieldTypeString
, alias: Jurisdiction Full Name
, length: 100
)
GSOURCE
(
type: esriFieldTypeString
, alias: Geometry Source
, length: 4
, Coded Values:
[L: Local Government source]
, [V: VGIN & Local Government source]
, [T: U.S. Census Bureau (TIGER) source]
)
Description: The VA_TOWN dataset is a feature class component of the Virginia Administrative Boundaries dataset from the Virginia Geographic Information Network (VGIN). VA_COUNTY represents the best available city and county boundary information to VGIN.VGIN initially sought to develop an improved locality and town boundary dataset in late 2013, spurred by response of the Virginia Administrative Boundaries Workgroup community. The feature class initially started from the locality boundaries from the Census TIGER dataset for Virginia. VGIN solicited input from localities in Virginia through the Road Centerlines data submission process as well as through public forums such as the Virginia Administrative Boundaries Workgroup and VGIN listservs. Data received were analyzed and incorporated into the VA_COUNTY feature class where locality data were a superior representation of the city or county boundary.
Definition Expression: N/A
Copyright Text: Virginia Geographic Information Network (VGIN), and the Census and Localities and Towns submitting data to the project
Description: This data set is the combination of the WetCAT NWI wetland and the VIMS Tidal Marsh Inventory (TMI). This layer is used with the Up and DownStream preprocessed analysis tables and paths.
Definition Expression: N/A
Copyright Text: Nontidal wetland data is from the U.S. Fish and Wildlife Service National Wetlands Inventory. Tidal Marsh Inventory is from the Center for Coastal Resources Management (CCRM) at VIMS
Name: NWI Wetlands Ranked: Flooding Mitigation Benefits to Coastal Buildings
Display Field: PROJECT_NAME
Type: Feature Layer
Geometry Type: esriGeometryPolygon
Description: This layer highlights those NWI wetlands that provide flooding mitigation benefits to coastal buildings in areas that are generally less than 10-feet in elevation in the coastal zone, and are those most vulnerable to storm and tidal flooding.
Definition Expression: N/A
Copyright Text: Nontidal wetland data is from the U.S. Fish and Wildlife Service National Wetlands Inventory. Rankings are from the Center for Coastal Resources Management (CCRM) at VIMS.