97 datasets found
  1. Maryland Physical Boundaries - County Boundaries (Detailed)

    • data.imap.maryland.gov
    • dev-maryland.opendata.arcgis.com
    • +1more
    Updated Feb 9, 2016
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    ArcGIS Online for Maryland (2016). Maryland Physical Boundaries - County Boundaries (Detailed) [Dataset]. https://data.imap.maryland.gov/datasets/maryland-physical-boundaries-county-boundaries-detailed
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    Dataset updated
    Feb 9, 2016
    Dataset provided by
    https://arcgis.com/
    Authors
    ArcGIS Online for Maryland
    Area covered
    Description

    This layer contains detailed outlines of Maryland counties. The Maryland land county boundaries were built using political county boundaries and the National Hydrology Data (NHD). Land boundaries are a key geographic featue in our mapping process.This is a MD iMAP hosted service. Find more information at https://imap.maryland.gov.Last Updated: UnknownFeature Service Link:https://mdgeodata.md.gov/imap/rest/services/Boundaries/MD_PhysicalBoundaries/FeatureServer/0

  2. K

    Prince George's County, MD Property Parcels

    • koordinates.com
    csv, dwg, geodatabase +6
    Updated Sep 27, 2018
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    Prince George's County, Maryland (2018). Prince George's County, MD Property Parcels [Dataset]. https://koordinates.com/layer/97985-prince-georges-county-md-property-parcels/
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    csv, kml, shapefile, pdf, geopackage / sqlite, mapinfo tab, geodatabase, mapinfo mif, dwgAvailable download formats
    Dataset updated
    Sep 27, 2018
    Dataset authored and provided by
    Prince George's County, Maryland
    Area covered
    Description

    Vector polygon map data of property parcels from Prince George's County, Maryland containing 345637 features.

    Property parcel GIS map data consists of detailed information about individual land parcels, including their boundaries, ownership details, and geographic coordinates.

    Property parcel data can be used to analyze and visualize land-related information for purposes such as real estate assessment, urban planning, or environmental management.

    Available for viewing and sharing as a map in a Koordinates map viewer. This data is also available for export to DWG for CAD, PDF, KML, CSV, and GIS data formats, including Shapefile, MapInfo, and Geodatabase.

  3. d

    Municipal Boundaries - Generalized

    • catalog.data.gov
    • opendata.maryland.gov
    • +1more
    Updated Aug 2, 2025
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    opendata.maryland.gov (2025). Municipal Boundaries - Generalized [Dataset]. https://catalog.data.gov/dataset/municipal-boundaries-generalized
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    Dataset updated
    Aug 2, 2025
    Dataset provided by
    opendata.maryland.gov
    Description

    Maryland Department of Planning (MDP) maps annexations from municipalities. This dataset is created and maintained by the Maryland Department of Planning. These boundaries are not intended to serve as a legal description. Fields:Municipality Name: Name of Municipality located in Maryland.Jurisdiction Code – Four letter county code: ALLE (Allegany), ANNE (Anne Arundel), BACI (Baltimore City), BACO (Baltimore County), CALV (Calvert), CARO (Caroline), CARR (Carroll), CECI (Cecil), CHAR (Charles), DORC (Dorchester), FRED (Frederick), GARR (Garrett), HARF (Harford), HOWA (Howard), KENT (Kent), MONT (Montgomery), PRIN (Prince George’s) QUEE (Queen Anne’s), SOME (Somerset), STMA (St. Mary’s), TALB (Talbot), WASH (Washington), WICO (Wicomico), WORC (Worcester). Date Last Updated: 07/30/2024

  4. m

    Maryland Property Data - Tax Map Grids

    • data.imap.maryland.gov
    • hub.arcgis.com
    • +2more
    Updated Apr 1, 2016
    + more versions
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    ArcGIS Online for Maryland (2016). Maryland Property Data - Tax Map Grids [Dataset]. https://data.imap.maryland.gov/datasets/maryland-property-data-tax-map-grids
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    Dataset updated
    Apr 1, 2016
    Dataset authored and provided by
    ArcGIS Online for Maryland
    Area covered
    Description

    This layer contains the boundaries and IDs of the Maryland tax maps produced by Maryland Department of Planning. Tax maps, also known as assessment maps, property maps or parcel maps, are a graphic representation of real property showing and defining individual property boundaries in relationship to contiguous real property.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/PlanningCadastre/MD_PropertyData/MapServer/2

  5. K

    Anne Arundel County, Maryland Parcels

    • koordinates.com
    csv, dwg, geodatabase +6
    Updated Dec 4, 2018
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    Anne Arundel County, Maryland (2018). Anne Arundel County, Maryland Parcels [Dataset]. https://koordinates.com/layer/98914-anne-arundel-county-maryland-parcels/
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    pdf, geopackage / sqlite, shapefile, geodatabase, mapinfo mif, mapinfo tab, csv, dwg, kmlAvailable download formats
    Dataset updated
    Dec 4, 2018
    Dataset authored and provided by
    Anne Arundel County, Maryland
    Area covered
    Description

    Vector polygon map data of property parcels from Anne Arundel County, Maryland containing 237,918 features.

    Property parcel GIS map data consists of detailed information about individual land parcels, including their boundaries, ownership details, and geographic coordinates.

    Property parcel data can be used to analyze and visualize land-related information for purposes such as real estate assessment, urban planning, or environmental management.

    Available for viewing and sharing as a map in a Koordinates map viewer. This data is also available for export to DWG for CAD, PDF, KML, CSV, and GIS data formats, including Shapefile, MapInfo, and Geodatabase.

  6. v

    Critical Areas Counties

    • res1catalogd-o-tdatad-o-tgov.vcapture.xyz
    • opendata.maryland.gov
    • +1more
    Updated Aug 2, 2025
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    opendata.maryland.gov (2025). Critical Areas Counties [Dataset]. https://res1catalogd-o-tdatad-o-tgov.vcapture.xyz/dataset/critical-areas-counties
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    Dataset updated
    Aug 2, 2025
    Dataset provided by
    opendata.maryland.gov
    Description

    In 1984, the General Assembly enacted the Chesapeake Bay Critical Area Act to regulate development, manage land use and conserve natural resources on land in those areas designated as Critical Area. For this document, the Critical Area is all land and water areas within 1,000 feet of the tidal waters' edge or from the landward edge of adjacent tidal wetlands and the lands under them. Georeferenced digital data files of the critical Area have been produced for Baltimore City and the 16 Maryland counties with land located within the Critical Area. The digital maps produced for each jurisdiction are polygons depicting the Critical Area and the land use classifications recognized by the Chesapeake Bay Critical Area Commission (CBCAC). Each jurisdiction is a separate file. The data were produced from hard copy parcel maps originally submitted by the counties as part of the requirements for developing their Critical Area Program. For the purpose of the Mdimap web service the Critical Area Data is displayed by two data layers, one general layer and one layer showing the available critical area data for local towns.This data set represents the Department of Natural Resources interpretation of the location and extent of the Critical Area; however, the digital maps are not recognized as the "official" maps. In accordance with Subsection 8-1807(a) of the Critical Area Act, the Critical Area consists of (1) All waters and lands under the Chesapeake Bay and its tributaries to the head of tide as indicated on the State wetland maps, and all State and private wetlands designated under Environment Article, Title 16, annotated Code of Maryland; (2) All land and water areas within 1,000 feet beyond the landward boundaries of State or private wetlands and the of tides designated under Environment Article, Article 16, Annotated Code of Maryland; and (3) Modification to these areas through inclusions or exclusions proposed by local jurisdictions and approved by Commission as specified in Natural Resources Article, Subsection 8-1807, annotated Code of Maryland. These maps are hard copy maps that cannot be exactly replicated in a digital format; therefore, some interpretation was necessary to create the digital line. Hard copy maps depicting the official Critical Area boundary line are available for review at the Chesapeake Bay Critical Area Commission, and at most local planning and zoning departments. 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 intended use is for general information and planning purposes. It is not intended to be used to determine the exact location of the Critical Area boundary on a specific parcel or to determine the acreage within the Critical Area on a specific site. 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.There were many parties involved in producing Maryland's Critical Area data and the key parties will be listed. Each county and city (listed below) produced a hard copy map and submitted the map to the Chesapeake Bay Critical Area Commission (CBCAC) for approval. Through Coastal Zone Management grants, CBCAC digit

  7. MDOT SHA County Flood Statistics Maps

    • hub.arcgis.com
    • data.imap.maryland.gov
    • +1more
    Updated Oct 22, 2021
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    ArcGIS Online for Maryland (2021). MDOT SHA County Flood Statistics Maps [Dataset]. https://hub.arcgis.com/maps/maryland::mdot-sha-county-flood-statistics-maps
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    Dataset updated
    Oct 22, 2021
    Dataset provided by
    https://arcgis.com/
    Authors
    ArcGIS Online for Maryland
    License

    MIT Licensehttps://opensource.org/licenses/MIT
    License information was derived automatically

    Area covered
    Description

    Esri ArcGIS Online (AGOL) Feature Layer which provides access to the MDOT SHA County Flood Statistics MapsMDOT SHA County Flood Statistics Maps data consists of polygon geometric features which represent the geographic extent of each Maryland County with an available MDOT SHA County Flood Statistics Map. Users of this layer should consume the URL contained within each pop-up to access the MDOT SHA County Flood Statistics Map.MDOT SHA County Flood Statistics Maps data is owned & maintained by the MDOT SHA OPPE Innovative Planning & Performance Division (IPPD).For more information related to the maps, contact MDOT SHA OPPE Innovative Planning & Performance Division (IPPD):Email: IPPD@mdot.maryland.govFor more information, contact MDOT SHA OIT Enterprise Information Services:Email: GIS@mdot.maryland.gov

  8. a

    Tax Map Index

    • opendata.aacounty.org
    • hub.arcgis.com
    Updated Jan 11, 2020
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    Anne Arundel County, MD (2020). Tax Map Index [Dataset]. https://opendata.aacounty.org/datasets/AnneArundelMD::tax-map-index/about
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    Dataset updated
    Jan 11, 2020
    Dataset authored and provided by
    Anne Arundel County, MD
    Area covered
    Description

    1 in.= 600 feet Tax Map index of Anne Arundel County

  9. A

    DIGITAL FLOOD INSURANCE RATE MAP DATABASE, Cecil Co, MARYLAND

    • data.amerigeoss.org
    • cloud.csiss.gmu.edu
    • +1more
    Updated Aug 18, 2022
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    United States (2022). DIGITAL FLOOD INSURANCE RATE MAP DATABASE, Cecil Co, MARYLAND [Dataset]. https://data.amerigeoss.org/dataset/digital-flood-insurance-rate-map-database-cecil-co-maryland
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    Dataset updated
    Aug 18, 2022
    Dataset provided by
    United States
    Area covered
    Maryland
    Description

    The Digital Flood Insurance Rate Map (DFIRM) Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual-chance flood event, and areas of minimal flood risk. The DFIRM Database is derived from Flood Insurance Studies (FISs), previously published Flood Insurance Rate Maps (FIRMs), flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. The FISs and FIRMs are published by the Federal Emergency Management Agency (FEMA). The file is georeferenced to earth's surface using the UTM projection and coordinate system. The specifications for the horizontal control of DFIRM data files are consistent with those required for mapping at a scale of 1:12,000.

  10. K

    Prince George's County, MD Historic Districts

    • koordinates.com
    csv, dwg, geodatabase +6
    Updated Sep 27, 2018
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    Prince George's County, Maryland (2018). Prince George's County, MD Historic Districts [Dataset]. https://koordinates.com/layer/97990-prince-georges-county-md-historic-districts/
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    pdf, dwg, geopackage / sqlite, geodatabase, mapinfo mif, mapinfo tab, csv, kml, shapefileAvailable download formats
    Dataset updated
    Sep 27, 2018
    Dataset authored and provided by
    Prince George's County, Maryland
    Area covered
    Description

    This dataset combines features from the Historic_Dist_PG_County_Py and Hist_Dist_Nation_Register_Py layers into one feature class, which is designed for display on the Historic Prince George's web application.

    This layer is a component of Historic Prince Georges.mxd.

    The historic site and district data in this map were designed for use in the Historic Prince George's web application.

    © M-NCPPC

  11. a

    Index 40 Scale Map Coverage

    • hub.arcgis.com
    • opendata.aacounty.org
    • +1more
    Updated Jan 11, 2020
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    Anne Arundel County, MD (2020). Index 40 Scale Map Coverage [Dataset]. https://hub.arcgis.com/maps/AnneArundelMD::index-40-scale-map-coverage
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    Dataset updated
    Jan 11, 2020
    Dataset authored and provided by
    Anne Arundel County, MD
    Area covered
    Description

    This is the Index 40 Scale Map Coverage layer for Anne Arundel County, Maryland.

  12. b

    County Boundary (SHA)

    • gisdata.baltometro.org
    Updated Feb 21, 2017
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    Baltimore Metropolitan Council (2017). County Boundary (SHA) [Dataset]. https://gisdata.baltometro.org/maps/county-boundary-sha
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    Dataset updated
    Feb 21, 2017
    Dataset authored and provided by
    Baltimore Metropolitan Council
    Area covered
    Description

    The SHA Maryland county boundaries were built using the USGS Topo Quads, county boundaries from the county governments, monument points, and historic records from the Maryland Archive. Date: 1/1/2014Update: none planned (as needed) Source: This is a MD iMAP hosted service. Find more information at http://imap.maryland.gov. This data is also hosted within SHA's GIS data catalog. More information at http://www.roads.maryland.gov.

  13. K

    Anne Arundel County, MD Sewer Pipes

    • koordinates.com
    csv, dwg, geodatabase +6
    Updated Dec 4, 2018
    + more versions
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    Anne Arundel County, Maryland (2018). Anne Arundel County, MD Sewer Pipes [Dataset]. https://koordinates.com/layer/98924-anne-arundel-county-md-sewer-pipes/
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    mapinfo tab, csv, mapinfo mif, shapefile, pdf, geodatabase, kml, geopackage / sqlite, dwgAvailable download formats
    Dataset updated
    Dec 4, 2018
    Dataset authored and provided by
    Anne Arundel County, Maryland
    Area covered
    Description

    Geospatial data about Anne Arundel County, MD Sewer Pipes. Export to CAD, GIS, PDF, CSV and access via API.

  14. d

    DIGITAL FLOOD INSURANCE RATE MAP DATABASE, DORCHESTER COUNTY, MARYLAND (AND...

    • datadiscoverystudio.org
    • cloud.csiss.gmu.edu
    • +1more
    Updated Nov 14, 2017
    + more versions
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    (2017). DIGITAL FLOOD INSURANCE RATE MAP DATABASE, DORCHESTER COUNTY, MARYLAND (AND INCORPORATED AREAS). [Dataset]. http://datadiscoverystudio.org/geoportal/rest/metadata/item/b7cf87e3635348cfb7980dbdf161471c/html
    Explore at:
    Dataset updated
    Nov 14, 2017
    Description

    description: The Digital Flood Insurance Rate Map (DFIRM) Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual-chance flood event, and areas of minimal flood risk. The DFIRM Database is derived from Flood Insurance Studies (FISs), previously published Flood Insurance Rate Maps (FIRMs), flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. The FISs and FIRMs are published by the Federal Emergency Management Agency (FEMA). The file is georeferenced to earth's surface using the UTM projection and coordinate system. The specifications for the horizontal control of DFIRM data files are consistent with those required for mapping at a scale of 1:12,000.; abstract: The Digital Flood Insurance Rate Map (DFIRM) Database depicts flood risk information and supporting data used to develop the risk data. The primary risk classifications used are the 1-percent-annual-chance flood event, the 0.2-percent-annual-chance flood event, and areas of minimal flood risk. The DFIRM Database is derived from Flood Insurance Studies (FISs), previously published Flood Insurance Rate Maps (FIRMs), flood hazard analyses performed in support of the FISs and FIRMs, and new mapping data, where available. The FISs and FIRMs are published by the Federal Emergency Management Agency (FEMA). The file is georeferenced to earth's surface using the UTM projection and coordinate system. The specifications for the horizontal control of DFIRM data files are consistent with those required for mapping at a scale of 1:12,000.

  15. D

    County Boundaries (polygon)

    • catalog.dvrpc.org
    • staging-catalog.cloud.dvrpc.org
    • +1more
    api, geojson, html +1
    Updated May 23, 2025
    + more versions
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    DVRPC (2025). County Boundaries (polygon) [Dataset]. https://catalog.dvrpc.org/dataset/county-boundaries-polygon
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    html, xml, api, geojsonAvailable download formats
    Dataset updated
    May 23, 2025
    Dataset provided by
    Delaware Valley Regional Planning Commissionhttps://www.dvrpc.org/
    Authors
    DVRPC
    Description

    County boundaries (polygon features) for Pennsylvania, New Jersey, Delaware, Maryland, New York, Connecticut, and the District of Columbia. Original Sources: PA - PennDOT NJ - NJOIT DE - DE Geological Survey MD, NY, CT, DC - ESRI Linework has been adjusted using the following methodology. NJ's boundaries overrode PA, since NJ's were highly accurate. PA overrode MD since PennDOT's were more accurate than ESRI's, and DE overrode PA & MD, since the "arc" of northernmost DE was a bit more accurate than PennDOT's or our original county boundaries. County boundaries in the DVRPC region have been adjusted to align with parcel data (where appropriate). NOTE: Use the following definition query if only need one county in DVRPC Region "Co_Name" LIKE '%Bucks%'

  16. m

    Maryland LiDAR Caroline County - Aspect

    • data.imap.maryland.gov
    Updated Jan 1, 2013
    + more versions
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    ArcGIS Online for Maryland (2013). Maryland LiDAR Caroline County - Aspect [Dataset]. https://data.imap.maryland.gov/datasets/b6e804821a874a66889585bdb0919d66
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    Dataset updated
    Jan 1, 2013
    Dataset authored and provided by
    ArcGIS Online for Maryland
    Area covered
    Description

    Geographic Extent: SANDY_Restoration_DE_MD_QL2 Area of Interest covers approximately 3.096 square miles. Lot #5 contains the full project area Dataset Description: The SANDY_Restoration_DE_MD_QL2 project called for the Planning, Acquisition, processing and derivative products of LIDAR data to be collected at a nominal pulse spacing (NPS) of 0.7 meters. Project specifications are based on the U.S. Geological Survey National Geospatial Program Base LIDAR Specification, Version 1. The data was developed based on a horizontal projection/datum of State Plane Zone Maryland (1900), NAD83, feet and vertical datum of NAVD1988 (GEOID12A), feet. LiDAR data was delivered in RAW flight line swath format, processed to create Classified LAS 1.2 Files formatted to 3842 individual 1500m x 1500m tiles, and corresponding Intensity Images and Bare Earth DEMs tiled to the same 1500m x 1500m schema, and Breaklines in ESRI shapefile format. Ground Conditions: LiDAR was collected in Winter 2013 / Spring 2014, while no snow was on the ground and rivers were at or below normal levels. In order to post process the LiDAR data to meet task order specifications, Quantum Spatial established a total of 78 QA control points and 99 Land Cover control points that were used to calibrate the LIDAR to known ground locations established throughout the SANDY_Restoration_DE_MD_QL2 project area.This is a MD iMAP hosted service. Find more information at https://imap.maryland.gov.Image Service Link: https://mdgeodata.md.gov/lidar/rest/services/Caroline/MD_caroline_aspect_m/ImageServer

  17. a

    Multimodal Transportation Corridors - Harford County, Maryland - PDF Map

    • hub.arcgis.com
    • harford-county-gis-hub-harfordgis.hub.arcgis.com
    Updated May 10, 2018
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    Harford County Government (2018). Multimodal Transportation Corridors - Harford County, Maryland - PDF Map [Dataset]. https://hub.arcgis.com/documents/1e465aa801b9468780307fb7b085f46b
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    Dataset updated
    May 10, 2018
    Dataset authored and provided by
    Harford County Government
    License

    Attribution-NonCommercial-ShareAlike 4.0 (CC BY-NC-SA 4.0)https://creativecommons.org/licenses/by-nc-sa/4.0/
    License information was derived automatically

    Area covered
    Harford County, Maryland
    Description

    Multimodal Transportation Corridors - Harford County, Maryland - PDF Map

    Click "Data Source" to download PDF map.

  18. d

    Frederick_County_2022_GeologicFormations

    • catalog.data.gov
    • opendata.maryland.gov
    Updated Aug 2, 2025
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    opendata.maryland.gov (2025). Frederick_County_2022_GeologicFormations [Dataset]. https://catalog.data.gov/dataset/frederick-county-2022-geologicformations
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    Dataset updated
    Aug 2, 2025
    Dataset provided by
    opendata.maryland.gov
    Area covered
    Frederick County
    Description

    This layer contains data concerning the location and characteristics of bedrock, mappable geologic units, within Frederick county. This geodatabase contains geologic data from Frederick County, Maryland. Data from several geologic quadrangles and two regional scale geologic maps were incorporated into the regional scale geologic feature classes in this geodatabase. Because of the scale of this map, some features were generalized slightly from the quad scale data. Additionally, some corrections were made for accuracy, such as edge matching to resolve "border faults". The source data for this map and geodatabase come from maps published by the Maryland Geological Survey from 2001 to the present, as well as one map published in cooperation with the United States Geological Survey. The source maps are Buckeystown (2001), Catoctin Furnace (2004), Frederick (2004), New Windsor (2004), Point of Rocks (2004), Walkersville (2004), Woodsboro (2004), Middletown (2005), Union Bridge (2006), Funkstown (2009), Keedysville, Shepherdstown, Charlestown, and Harpers Ferry (2009), Myersville and Smithsburg (2009), Hagerstown (2013), Mason and Dixon (2013), Clear Spring and Hedgesville (2014), Williamsport (2014), Blue Ridge Summit (2021, in review), Emmitsburg and Taneytown (2021, in review), all 1:24000 quadrangle scale, as well as portions of two regional maps: Geologic Map of Garrett, Allegany, and Western Washington Counties, Maryland (2013), and Geologic Map of the Frederick 30' x 60' Quadrangle, Maryland, Virginia, and West Virginia (USGS, 2007). The GIS data from the referenced maps were mosaiced in Arc Map, corrected for accuracy across quad boundaries, merged to form a continuous dataset and clipped to the extent of Frederick County. Feature level metadata are included, which contain field descriptions for each feature class. This is a small scale dataset, appropriate for 1:100,000 regional scale. Quad scale data are suggested for display or analysis that requires a larger scale. This dataset is prepared for compliance with the USGS GeMS database standard. Last Updated: 06/01/2022

  19. d

    Frederick_County_2022_GeologicContactsAndFaults

    • catalog.data.gov
    • opendata.maryland.gov
    Updated Aug 2, 2025
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    opendata.maryland.gov (2025). Frederick_County_2022_GeologicContactsAndFaults [Dataset]. https://catalog.data.gov/dataset/frederick-county-2022-geologiccontactsandfaults
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    Dataset updated
    Aug 2, 2025
    Dataset provided by
    opendata.maryland.gov
    Area covered
    Frederick County
    Description

    This layer contains data concerning the location and characteristics of contacts and faults within Frederick county. This geodatabase contains geologic data from Frederick County, Maryland. Data from several geologic quadrangles and two regional scale geologic maps were incorporated into the regional scale geologic feature classes in this geodatabase. Because of the scale of this map, some features were generalized slightly from the quad scale data. Additionally, some corrections were made for accuracy, such as edge matching to resolve "border faults". The source data for this map and geodatabase come from maps published by the Maryland Geological Survey from 2001 to the present, as well as one map published in cooperation with the United States Geological Survey. The source maps are Buckeystown (2001), Catoctin Furnace (2004), Frederick (2004), New Windsor (2004), Point of Rocks (2004), Walkersville (2004), Woodsboro (2004), Middletown (2005), Union Bridge (2006), Funkstown (2009), Keedysville, Shepherdstown, Charlestown, and Harpers Ferry (2009), Myersville and Smithsburg (2009), Hagerstown (2013), Mason and Dixon (2013), Clear Spring and Hedgesville (2014), Williamsport (2014), Blue Ridge Summit (2021, in review), Emmitsburg and Taneytown (2021, in review), all 1:24000 quadrangle scale, as well as portions of two regional maps: Geologic Map of Garrett, Allegany, and Western Washington Counties, Maryland (2013), and Geologic Map of the Frederick 30' x 60' Quadrangle, Maryland, Virginia, and West Virginia (USGS, 2007). The GIS data from the referenced maps were mosaiced in Arc Map, corrected for accuracy across quad boundaries, merged to form a continuous dataset and clipped to the extent of Frederick County. Feature level metadata are included, which contain field descriptions for each feature class. This is a small scale dataset, appropriate for 1:100,000 regional scale. Quad scale data are suggested for display or analysis that requires a larger scale. This dataset is prepared for compliance with the USGS GeMS database standard. Last Updated: 06/01/2022

  20. a

    Annapolis City Tax Map Index

    • opendata.aacounty.org
    • hub.arcgis.com
    Updated Jan 11, 2020
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    Anne Arundel County, MD (2020). Annapolis City Tax Map Index [Dataset]. https://opendata.aacounty.org/maps/annapolis-city-tax-map-index
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    Dataset updated
    Jan 11, 2020
    Dataset authored and provided by
    Anne Arundel County, MD
    Area covered
    Description

    Index of Annapolis tax maps

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ArcGIS Online for Maryland (2016). Maryland Physical Boundaries - County Boundaries (Detailed) [Dataset]. https://data.imap.maryland.gov/datasets/maryland-physical-boundaries-county-boundaries-detailed
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Maryland Physical Boundaries - County Boundaries (Detailed)

Explore at:
Dataset updated
Feb 9, 2016
Dataset provided by
https://arcgis.com/
Authors
ArcGIS Online for Maryland
Area covered
Description

This layer contains detailed outlines of Maryland counties. The Maryland land county boundaries were built using political county boundaries and the National Hydrology Data (NHD). Land boundaries are a key geographic featue in our mapping process.This is a MD iMAP hosted service. Find more information at https://imap.maryland.gov.Last Updated: UnknownFeature Service Link:https://mdgeodata.md.gov/imap/rest/services/Boundaries/MD_PhysicalBoundaries/FeatureServer/0

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