Aerial Cartographics of America (ACA) collected 750 square miles covering Baltimore County. The nominal pulse spacing for this project was 1 point every 0.7 meters. Dewberry used proprietary procedures to classify the LAS according to project specifications: 0-Never Classified, 1-Unclassified, 2-Ground, 7-Low Noise, 9-Water, 10-Ignored Ground due to breakline proximity. Dewberry produced 3D breaklines and combined these with the final LiDAR data to produce seamless hydro-conditioned DEMs for the project area. The data was formatted according to the Baltimore County tile naming convention.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/Baltimore/MD_baltimore_dem_ft/ImageServer

Layer symbolizes roads from edge of pavement in Baltimore County, Maryland. Data captured from aerial photography.

Outlines the boundaries of the Baltimore County Historic Districts. The agreement by the owners of 75 percent of the property within a proposed district’s boundary is required to form a local historic district. Any exterior modification or addition to a structure in a district, or any excavation building, or demolition permit, is subject to approval by the Landmarks Preservation Commission.

This web map presents a vector basemap of OpenStreetMap (OSM) data hosted by Esri. Esri created this vector tile basemap from the Daylight map distribution of OSM data, which is supported by Facebook and supplemented with additional data from Microsoft. This version of the map is rendered using OSM cartography. The OSM Daylight map will be updated every month with the latest version of OSM Daylight data.OpenStreetMap is an open collaborative project to create a free editable map of the world. Volunteers gather location data using GPS, local knowledge, and other free sources of information and upload it. The resulting free map can be viewed and downloaded from the OpenStreetMap site:www.OpenStreetMap.org. Esri is a supporter of the OSM project and is excited to make this enhanced vector basemap available to the ArcGIS user and developer communities.

Buildings_BACO

   File Geodatabase Feature Class


   Thumbnail Not Available

   Tags

   Planimetric, BES, Building, Footprints, Structure, Cadastral, Housing, Homes




   Summary


   High resolution planimetric building data.


   Description


   Baltimore County building footprints circa 1997. This dataset was obtained from the Baltimore County Goverment; there was only limited supporting documentation. A limited assesment was conducted that compared the building footprints to high resolution aerial imagery (Emerge) flown in 1999. This assessment found that a considerable number of building footprints were missing. Those that did exist appeared to agree spatially with the Emerge imagery. The following building types are included in this dataset: residential, commercial/industrial, other structures, miscellaneous buildings, buildings under construction, toll booth plazas, rail stations, water towers, storage tanks, silos.


   Credits


   Baltimore County Government


   Use limitations


   BES research only.


   Extent



   West -76.897990  East -76.334462 

   North 39.727055  South 39.189542 




   Scale Range

   There is no scale range for this item.

Aerial Cartographics of America (ACA) collected 750 square miles covering Baltimore County. The nominal pulse spacing for this project was 1 point every 0.7 meters. Dewberry used proprietary procedures to classify the LAS according to project specifications: 0-Never Classified, 1-Unclassified, 2-Ground, 7-Low Noise, 9-Water, 10-Ignored Ground due to breakline proximity. Dewberry produced 3D breaklines and combined these with the final LiDAR data to produce seamless hydro-conditioned DEMs for the project area. The data was formatted according to the Baltimore County tile naming convention.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/Baltimore/MD_baltimore_shadedRelief_RGB/ImageServer

Parcels_2003_BACO

   File Geodatabase Feature Class


   Thumbnail Not Available

   Tags

   Social Order, Hierarchy, Territory, Social Institutions, Government, Parcels, BES, Cadastral




   Summary


   BES Research


   Description


   Baltimore County parcel data whose mapping zones fall within the Gwynns Falls watershed . Parcel edgematching issues between the original 3 parcel layers (as_area3_assess, ph3a2_assess, phase4_assess) and Baltimore City parcel data were resolved. As of 06/18/04 editing is still underway.


   Metadata for this dataset is incomplete.


   Credits


   UVM Spatial Analysis Lab


   Use limitations


   BES use only


   Extent



   West -76.908689  East -76.418666 

   North 39.590134  South 39.209697 




   Scale Range

   There is no scale range for this item.

The flow accumulation tool calculates the number of all cells flowing into each downslope cell in the output raster. A flow accumulation raster was generated in GIS for Baltimore County using a 2014 Digital Elevation Model (cell size equal to 2.5 ft by 2.5). To generate the shown flow accumulation lines, the flow accumulation raster was filtered to only include cells that receive flows from 500 or more other cells.

AT_2004_BACO File Geodatabase Feature Class Thumbnail Not Available Tags Socio-economic resources, Information, Social Institutions, Hierarchy, Territory, BES, Parcel, Property, Property View, A&T, Database, Assessors, Taxation Summary Serves as a basis for performing various analyses based on parcel data. Description Assessments & Taxation (A&T) Database from MD Property View 2004 for Baltimore County. The A&T Database contains parcel data from the State Department of Assessments and Taxation; it incorporates parcel ownership and address information, parcel valuation information and basic information about the land and structure(s) associated with a given parcel. These data form the basis for the 2004 Database, which also includes selected Computer Assisted Mass Appraisal (CAMA) characteristics, text descriptions to make parcel code field data more readily accessible and logical True/False fields which identify parcels with certain characteristics. Documentation for A&T, including a thorough definition for all attributes is enclosed. Complete Property View documentation can be found at http://www.mdp.state.md.us/data/index.htm under the "Technical Background" tab. It should be noted that the A&T Database consists of points and not parcel boundaries. For those areas where parcel polygon data exists the A&T Database can be joined using the ACCTID or a concatenation of the BLOCK and LOT fields, whichever is appropriate. (Spaces may have to be excluded when concatenating the BLOCK and LOT fields). A cursory review of the 2004 version of the A&T Database indicates that it has more accurate data when compared with the 2003 version, particularly with respect to dwelling types. However, for a given record it is not uncommon for numerous fields to be missing attributes. Based on previous version of the A&T Database it is also not unlikely that some of the information is inaccurate. This layer was edited to remove points that did not have a valid location because they failed to geocode. There were 5870 such points. A listing of the deleted points is in the table with the suffix "DeletedRecords." Credits Maryland Department of Planning Use limitations BES use only. Extent West -76.897802 East -76.335214 North 39.726520 South 39.192552 Scale Range There is no scale range for this item.

Tags

   There are no tags for this item.




   Summary

   There is no summary for this item.


   Description


   Soils for Baltimore County. No metadata exists for this dataset. It was received from Rich Pouyat (USFS) . As of 15 July 2004 SSURGO data is not available from NRCS for Baltimore County.


   Credits

   There are no credits for this item.


   Use limitations

   There are no access and use limitations for this item.


   Extent



   West -76.904439  East -76.315722 

   North 39.727769  South 39.177238 




   Scale Range

   There is no scale range for this item.

Parcels_2007_BACO

   File Geodatabase Feature Class


   Thumbnail Not Available

   Tags

   BES




   Summary

   There is no summary for this item.


   Description


   Baltimore County parcels received on March 2, 2007 from Don Outen. This data has not yet been evaluated for accuracy or consistency. No metadata was received with this layer.


   Credits


   UVM Spatial Analysis Lab


   Use limitations

   There are no access and use limitations for this item.


   Extent



   West -76.912421  East -76.319117 

   North 39.726917  South 39.188766 




   Scale Range

   There is no scale range for this item.

CAMA_2004_BACI File Geodatabase Feature Class Thumbnail Not Available Tags Socio-economic resources, Information, Social Institutions, Hierarchy, Territory, BES, Parcel, Property, Property View, CAMA, Database, Structure, Appraisal Summary Detailed structural information for parcels. Description The CAMA (Computer Assisted Mass Appraisal) Database is created on a yearly basis using data obtained from the State Department of Assessments and Taxation (SDAT). Each yearly download contains additional residential housing characteristics as available for parcels included in the CAMA Database and the CAMA supplementary databases for each jurisdiction.. Documentation for CAMA, including thorough definitions for all attributes is enclosed. Complete Property View documentation can be found at http://www.mdp.state.md.us/data/index.htm under the "Technical Background" tab. It should be noted that the CAMA Database consists of points and not parcel boundaries. For those areas where parcel polygon data exists the CAMA Database can be joined using the ACCTID or a concatenation of the BLOCK and LOT fields, whichever is appropriate. (Spaces may have to be excluded when concatenating the BLOCK and LOT fields). A cursory review of the 2004 version of the CAMA Database indicates that it has more accurate data when compared with the 2003 version, particularly with respect to dwelling types. However, for a given record it is not uncommon for numerous fields to be missing attributes. Based on previous version of the CAMA Database it is also not unlikely that some of the information is inaccurate. This layer was edited to remove points that did not have a valid location because they failed to geocode. There were 235 such points. A listing of the deleted points is in the table with the suffix "DeletedRecords." Credits Maryland Department of Planning Use limitations BES use only. Extent West -76.713415 East -76.526101 North 39.374324 South 39.200707 Scale Range There is no scale range for this item.

Feature class contains all hydrology lines for Baltimore County. Lines were compiled from aerial photography.

Inventory of Historic Properties for Baltimore County. The Maryland Inventory of Historic Properties vector layers are depictions of the approximate locations of historic structures, monuments, districts, and other properties that are listed on the Maryland Inventory of Historic Properties. No attribute information is available for this dataset. This is part of a collection of 221 Baltimore Ecosystem Study metadata records that point to a geodatabase. The geodatabase is available online and is considerably large. Upon request, and under certain arrangements, it can be shipped on media, such as a usb hard drive. The geodatabase is roughly 51.4 Gb in size, consisting of 4,914 files in 160 folders. Although this metadata record and the others like it are not rich with attributes, it is nonetheless made available because the data that it represents could be indeed useful.

In this feature class, the number of structures within a park parcel is given by four fields described below:Count_of_Buildings_In_Parcel: This field counts the total number of structures contained in a particular park parcel.Count_of_Buildings_Outside_FZ: This field counts the number of structures contained in a particular park parcel that do not fall within the 100-year or 500-year flood zones.Count_of_Buildings_in_500yr_FZ: This field counts the number of structures contained in a particular park parcel that also intersect flood zone X per the 2022 preliminary Digital Flood Insurance Rate Map.Count_of_Buildings_in_100yr_FZ: This field counts the number of structures contained in a particular park parcel that also intersect the FEMA special flood hazard area per the 2022 preliminary Digital Flood Insurance Rate Map.The building structures counted in this feature class include Residential, Commercial, Institutional, Garages, Other structures, Buildings under Construction, Water Towers, Storage Tanks, and Silos, as provided by Baltimore County.

CZMP points for Baltimore County from 2016.

Originating Baltimore Ecosystem Study

   Description of SE Gwynns Falls watershed wetlands for Baltimore county


   Status of Dataset final


   Geographic Area GFW SE COUNTY


   West Bounding 881431


   East Bounding 933135


   North Bounding 560705


   South Bounding 496940


   Keywords wetlands, reach codes


   Contact Person Jonathan Walsh


   Contact Phone # 845-677-5343


   Contact e-mail walshj@ecostudies.org


   Project Baltimore Ecosystem Study


   Format of Data and ARC/Info export (*.e00)


   File Name GFBALTW2


   File Size


   Type of Source gis coverage


   Scale of Source


   Date(s) of Source 1995


   Method of Data n/a


   Method of Digital This wetlands coverage has been clipped with the Gwynns Falls watershed boundary


   Date(s) of Digital 1995


   Resolution/Accuracy n/a


   Geographic n/a


   Type of Data vector


   Coordinate Maryland State Plane, feet, NAD27


   Attribute n/a


   Available Media on-line


   Distribution free


   Access/Use No constraints. The authors of this dataset would appreciate acknowledgment in products derived


   Level II Metadata none


   Level III Metadata none

AT_2003_BACI_1 File Geodatabase Feature Class Thumbnail Not Available Tags There are no tags for this item. Summary There is no summary for this item. Description MD Property View 2003 A&T Database. For more information on the A&T Database refer to the enclosed documentation. This layer was edited to remove spatial outliers in the A&T Database. Spatial outliers are those points that were not geocoded and as a result fell outside of the Baltimore City Boundary; 416 spatial outliers were removed from this layer. The field BLOCKLOT2 can be used to join this layer with the Baltimore City parcel layer. Credits There are no credits for this item. Use limitations There are no access and use limitations for this item. Extent West -76.713418 East -76.526031 North 39.374429 South 39.197452

This layer represents the metro line in Baltimore County, Maryland.

Parcels_2003_BACI

   File Geodatabase Feature Class


   Thumbnail Not Available

   Tags

   BES




   Summary

   There is no summary for this item.


   Description


   Parcel Data for Baltimore City obatined from BNIA will all extraneous fields removed. 


   Editing in progress


   The following edits were performed:

   1) Resolved edge matching issues with Baltimore County parcels that border it and fall within the Gwynns Falls Watershed.

   2) BLOCKLOT errors were noted and if necessary corrected. The BLOCKLOT ID is used to link the parcel data to the MD Property View A&T database. It should be pointed out that in some instances a single BLOCKLOT ID in the Property View A&T database may correspond to more than one parcel. There are only 14 instances were a single BLOCKLOT ID corresponds to 4 or more parcels, these are typically railroads, utility, or government properties. In other cases a single BLOCKLOT ID may correspond to two separate parcels that are essentially one property bisected by a road. There are other instances where there appears no logical explanation for a single BLOCKLOT ID corresponding to multiple parcels.


   Credits


   UVM Spatial Analysis Lab


   Use limitations

   There are no access and use limitations for this item.


   Extent



   West -76.713328  East -76.525885 

   North 39.374474  South 39.195051 




   Scale Range

   There is no scale range for this item.