This data set contains small-scale base GIS data layers compiled by the National Park Service Servicewide Inventory and Monitoring Program and Water Resources Division for use in a Baseline Water Quality Data Inventory and Analysis Report that was prepared for the park. The report presents the results of surface water quality data retrievals for the park from six of the United States Environmental Protection Agency's (EPA) national databases: (1) Storage and Retrieval (STORET) water quality database management system; (2) River Reach File (RF3) Hydrography; (3) Industrial Facilities Discharges; (4) Drinking Water Supplies; (5) Water Gages; and (6) Water Impoundments. The small-scale GIS data layers were used to prepare the maps included in the report that depict the locations of water quality monitoring stations, industrial discharges, drinking intakes, water gages, and water impoundments. The data layers included in the maps (and this dataset) vary depending on availability, but generally include roads, hydrography, political boundaries, USGS 7.5' minute quadrangle outlines, hydrologic units, trails, and others as appropriate. The scales of each layer vary depending on data source but are generally 1:100,000.

Parcels with addresses in Chesapeake, VA. Maintained by Real Estate. The Property Class field relates to the property use: residential, commercial, etc. The class descriptions are in the Parcel Class table.

GIS representation of Chesapeake's corporate boundary. Not official.

The Digital Geologic Map of Chesapeake and Ohio Canal National Historical Park and Vicinity, District of Columbia, Virginia, Maryland and West Virginia is composed of GIS data layers complete with ArcMap 9.3 layer (.LYR) files, two ancillary GIS tables, a Map PDF document with ancillary map text, figures and tables, a FGDC metadata record and a 9.3 ArcMap (.MXD) Document that displays the digital map in 9.3 ArcGIS. The data were completed as a component of the Geologic Resources Inventory (GRI) program, a National Park Service (NPS) Inventory and Monitoring (I&M) funded program that is administered by the NPS Geologic Resources Division (GRD). Source geologic maps and data used to complete this GRI digital dataset were provided by the following: U.S. Geological Survey and Maryland Geological Survey. Detailed information concerning the sources used and their contribution the GRI product are listed in the Source Citation sections(s) of this metadata record (choh_metadata.txt; available at http://nrdata.nps.gov/choh/nrdata/geology/gis/choh_metadata.xml). All GIS and ancillary tables were produced as per the NPS GRI Geology-GIS Geodatabase Data Model v. 2.1. (available at: http://science.nature.nps.gov/im/inventory/geology/GeologyGISDataModel.cfm). The GIS data is available as a 9.3 personal geodatabase (choh_geology.mdb), and as shapefile (.SHP) and DBASEIV (.DBF) table files. The GIS data projection is NAD83, UTM Zone 18N. The data is within the area of interest of Chesapeake and Ohio Canal National Historical Park, as well as Antietam National Battlefield, Harpers Ferry National Historical Park, and George Washington Memorial Parkway.

This data resource is a layer in a map service. To download it, please go to the "Layers" section of this page and click the name of the dataset. This will open a new page that features a download button. Open the Map Service: https://gis.chesapeakebay.net/ags/rest/services/Boundaries/CBW_boundary_2022_closed/MapServer This modified Chesapeake Bay watershed boundary represents all land and water within the watershed. The boundary is that of the Modified NHDPlusV2.1 (100k) Catchments.

This dataset shows specific areas of land use/cover conversion in the Chesapeake Bay Watershed during the period 2013/14 to 2017/18. Change in land use/cover from 2013/14 to 2017/18 was interpreted by translating changes in land cover to changes in land use consistent with the 54 unique land use/cover classes in the 2017/18 land use dataset. Changes in land cover were primarily based on multi-date LiDAR imagery if available followed by multi-date NAIP imagery (available for all counties). Similar rules and logic used to classify the 2013/14 land cover data were applied to the change objects to produce a comparable land cover dataset for 2017/18. While some changes in land cover translate directly into changes in land use (e.g., impervious structures), others had to be interpreted based on context (e.g., small fragmented patches of tree canopy reconstituted as forest in 2013/14; turf grass in a newly developed parcel interpreted as cropland prior to development in 2013/14). Transitions between turf grass, cropland, pasture, and natural succession are not evident in the land cover data but are evident in the land use data. For this reason, the extent of land use change is greater than the extent of land cover change. For more information on input data please see: https://docs.google.com/spreadsheets/d/1e0Uy7DVUe_bXY4jJ1TUPUFvwNs9QbyHrSRY8JQs5GxE/edit?usp=sharing For detailed methods and documentation, please see: https://www.chesapeakeconservancy.org/conservation-innovation-center/high-resolution-data/lulc-data-project-2022/

This dataset contains polygon features representing the Chesapeake Bay Preservation Areas.

Data collected and complied by Department of City Planning maintained on as needed basis by the Department of City Planning.

Any land designated by the city pursuant to Part III of the Chesapeake Bay Preservation Area Designation and Management Regulations, 9 VAC 10-20-70, and section 10.1-2107 of the Code of Virginia. A Chesapeake Bay Preservation Area shall consist of a resource protection area and a resource management area.

The Chesapeake Bay and its tributaries constitute an important and productive estuarine system, providing economic and social benefits to the citizens of the City of Norfolk and the Commonwealth of Virginia. The health of the Chesapeake Bay is vital to maintaining the city's economy and the welfare of its citizens. The intent of the city and the purposes of the Overlay District are to: (1) protect existing high quality state waters; (2) restore all other state waters to a condition or quality that will permit all reasonable public uses and will support the propagation and growth of all aquatic life, including game fish, which might reasonably be expected to inhabit them; (3) safeguard the clean waters of the Commonwealth from pollution; (4) prevent any increase in pollution; (5) reduce existing pollution; and (6) promote water resource conservation in order to provide for the health, safety, and welfare of the present and future citizens of the city.

Any and all data sets are for graphical representations only and should not be used for legal purposes. Any determination of topography or contours, or any depiction of physical improvements, property lines or boundaries is for general information only and shall not be used for the design, modification, or construction of improvement to real property or for flood plain determination.

The dataset can be available using the link:https://norfolkgisdata-orf.opendata.arcgis.com/datasets/712ae93509fb4bb6947bab945d30bd77_0/about

Open the Data Resource: https://gis.chesapeakebay.net/ags/rest/services/Boundaries/State_County/MapServer/1 View the county boundaries that intersect the Chesapeake Bay watershed according to the 2020 Census.

Open the Data Resource: https://gis.chesapeakebay.net/ags/rest/services/WIP/CBPTidalStationsGAMResults/MapServer The Chesapeake Bay tidal water quality monitoring program is carried out in partnership with Maryland, Virginia and the U.S. Environmental Protection Agency. Water quality parameters such as temperature, salinity, dissolved oxygen, clarity, chlorophyll-a, nitrogen and phosphorus are measured at more than 100 stations at least once a month. Trends in water quality parameters are analyzed by state agency and Chesapeake Bay Program partners using a Generalized Additive Model (GAM) statistical approach. More information about the tidal water quality monitoring program and GAM methods can be found here: https://www.chesapeakebay.net/who/group/integrated-trends-analysis-team

The dataset contains locations and attributes of HUC-11 watersheds. The USGS presents a detailed explanation of HUCs at https://water.usgs.gov/GIS/huc.html. HUC-11 boundaries are compiled by each state. The export files of HUC-11 at the state level were provided by each respective state and are unmodified. HUC-11 boundaries for Delaware are not yet available. Also, a small portion of the Chesapeake Basin in NY State has not yet been completed.

These data were automated to provide an accurate high-resolution historical shoreline of Chesapeake Bay, MD suitable as a geographic information system (GIS) data layer. These data are derived from shoreline maps that were produced by the NOAA National Ocean Service including its predecessor agencies which were based on an office interpretation of imagery and/or field survey. The NGS attrib...

The package contains the data layers used in “He et al. 2024, Effects of spatial variability in vegetation phenology, climate, landcover, biodiversity, topography, and soil property on soil respiration across a coastal ecosystem”. The study aims to use multi-source remote sensing and GIS datasets to investigate the spatial heterogeneity and identify spatial zones with similar environmental characteristics and understand the primary driving factors affecting soil respiration within sub-ecosystems of the coastal ecosystem. We employed unsupervised hierarchical clustering analysis to identify spatial regions with distinct environmental characteristics, then determined the main driving factors using Random Forest regression and SHapley Additive exPlanations (SHAP). Spatial data layers include soil respiration, kernel Normalized Difference Vegetation Index (kNDVI) computed from Harmonized Landsat 8 and Sentinel-2 time series, climate variables from the Daymet dataset, land cover, biodiversity, topographical metrics, soil property, and tidal elevation.

Open the Data Resource: https://gis.chesapeakebay.net/healthywatersheds/collection/ The Chesapeake Healthy Watersheds Story Maps collection illustrates the accomplishments and management approaches of the Chesapeake Bay Program's Maintain Healthy Watersheds Goal Implementation Team; provides an overview of the Chesapeake Healthy Watersheds Assessment; and shows how the Chesapeake Healthy Watersheds Assessment can be used to benefit multiple conservation and restoration goals.

This layer contains the Chesapeake Bay watershed boundary.

Open the Data Resource: https://storymaps.arcgis.com/stories/cb5b91c1c6fd43478f01cf8e8a7d6e9d In September 2006, the State of Chesapeake Forests provided a watershed-wide snapshot on forests in the 206 counties that feed into the Chesapeake Bay. Recently released 2017-2018 1-meter resolution land use/land cover data and accompanying land use/land cover change data give us an incredible opportunity to learn about Chesapeake forests at a finer scale than ever before. The State of Chesapeake Forests 2.0 Story Map uses this new data to provide an updated understanding of the State of Chesapeake Forests and how they are changing. This evaluation includes forests in natural settings as well as tree cover in the cities and communities where many people live and play.

These data provide an accurate high-resolution shoreline compiled from imagery of CHESAPEAKE AND DELAWARE CANAL . This vector shoreline data is based on an office interpretation of imagery that may be suitable as a geographic information system (GIS) data layer. This metadata describes information for both the line and point shapefiles. The NGS attribution scheme 'Coastal Cartographic Object Attribute Source Table (C-COAST)' was developed to conform the attribution of various sources of shoreline data into one attribution catalog. C-COAST is not a recognized standard, but was influenced by the International Hydrographic Organization's S-57 Object-Attribute standard so the data would be more accurately translated into S-57. This resource is a member of https://www.fisheries.noaa.gov/inport/item/39808

Areas within the City that come under the purview of the Chesapeake Bay Preservation Act. Maintained by the Planning Department.

These data were automated to provide an accurate high-resolution historical shoreline of Chesapeake Bay in the Vicinity of Hampton, VA suitable as a geographic information system (GIS) data layer. These data are derived from shoreline maps that were produced by the NOAA National Ocean Service including its predecessor agencies which were based on an office interpretation of imagery and/or fi...

Survey Controls in the City of Chesapeake. Maintained by Public Works.

Chesapeake Bay Watershed Outline. Defines extent of the Chesapeake Bay watershed within the state of Maryland.The Department of Natural Resources makes no warranty, expressed or implied, as to the use or appropriateness of Spatial Data, and there are no warranties of merchantability or fitness for a particular purpose or use. The information contained in Spatial Data is from publicly available sources, but no representation is made as to the accuracy or completeness of Spatial Data. The Department of Natural Resources shall not be subject to liability for human error, error due to software conversion, defect, or failure of machines, or any material used in the connection with the machines, including tapes, disks, CD-ROMs or DVD-ROMs and energy. The Department of Natural Resources shall not be liable for any lost profits, consequential damages, or claims against the Department of Natural Resources by third parties. The liability of the Department of Natural Resources for damage regardless of the form of the action shall not exceed any distribution fees that may have been paid in obtaining Spatial Data.This is a MD iMAP hosted service layer. Find more information at https://imap.maryland.gov.Feature Service Layer Link:https://mdgeodata.md.gov/imap/rest/services/Hydrology/MD_Watersheds/FeatureServer/3