EnviroAtlas - Baltimore, MD - Meter-Scale Urban Land Cover (MULC) Data

The Baltimore, MD EnviroAtlas Meter-scale Urban Land Cover (MULC) dataset comprises 4,545 km2 around the city of Baltimore and portions of surrounding counties. These MULC data and maps were derived from LiDAR and 1-m pixel, four-band (red, green, blue, and infrared light) leaf-on aerial photography acquired from the United States Department of Agriculture (USDA) National Agriculture Imagery Program (NAIP) as well as ancillary vector data (e.g., roads, building footprints). Seven land cover classes were mapped: Water, Impervious Surfaces, Soil/Barren, Trees, Grass/Herbaceous, Agriculture, and Wetlands (Woody and Emergent). Wetlands were delineated using the best available existing wetlands data, which was a National Wetlands Inventory (NWI) layer from the years 1981, 1999, and 2013 (http://wetlands.fws.gov). An analysis of about 600 completely random and 90 stratified random photo-interpreted land cover reference points yielded a simple overall user's accuracy (MAX) of 90% and an overall fuzzy user's accuracy (RIGHT) of 93% within the census block group boundary (see confusion matrices below). These data were developed as part of the Chesapeake Bay High-Resolution Land Cover Project, a cooperative agreement between the Chesapeake Conservancy and the National Park Service, funded through an interagency agreement with the Environmental Protection Agency (EPA). The Chesapeake Conservancy, under the direction of Margaret Markham, created the initial statewide 1-meter land cover data. EPA added agriculture and wetlands taken from ancillary data sources. See detailed processing steps and workflow below. This dataset was produced by the Chesapeake Conservancy, the National Park Service, and the US EPA to support research and online mapping activities related to EnviroAtlas. EnviroAtlas (https://www.epa.gov/enviroatlas) allows the user to interact with a web-based, easy-to-use, mapping application to view and analyze multiple ecosystem services for the contiguous United States. The dataset is available as downloadable data (https://edg.epa.gov/data/Public/ORD/EnviroAtlas) or as an EnviroAtlas map service. Additional descriptive information about each attribute in this dataset can be found in its associated EnviroAtlas Fact Sheet (https://www.epa.gov/enviroatlas/enviroatlas-fact-sheets).

Data e Risorse

Campo Valore
access_constraints ["Use Constraints: None. Please check sources, scale, accuracy, currency and other available information. Please confirm that you are using the most recent copy of both data and metadata. Acknowledgement of the EPA would be appreciated.", "Access Constraints: None"]
bbox-east-long -76.27793
bbox-north-lat 39.71371
bbox-south-lat 38.71327
bbox-west-long -77.19886
contact-email EnviroAtlas@epa.gov
coupled-resource []
dataset-reference-date [{"type": "publication", "value": "2017-11-30"}]
frequency-of-update ASNEEDED
licence ["https://edg.epa.gov/EPA_Data_License.html"]
licence_url https://edg.epa.gov/EPA_Data_License.html
metadata-date 2021-05-28
metadata-language eng; USA
metadata_type geospatial
old-spatial {"type": "Polygon", "coordinates": [[[-77.19886, 38.71327], [-76.27793, 38.71327], [-76.27793, 39.71371], [-77.19886, 39.71371], [-77.19886, 38.71327]]]}
progress completed
resource-type dataset
responsible-party [{"name": "U.S. Environmental Protection Agency, Office of Research and Development-Sustainable and Healthy Communities Research Program, EnviroAtlas", "roles": ["pointOfContact"]}]
spatial {"type": "Polygon", "coordinates": [[[-77.19886, 38.71327], [-76.27793, 38.71327], [-76.27793, 39.71371], [-77.19886, 39.71371], [-77.19886, 38.71327]]]}
spatial_harvester true
Gruppi
  • AmeriGEOSS
  • National Provider
  • North America
Tag
  • agriculture
  • amerigeo
  • amerigeoss
  • baltimore
  • ckan
  • ecology
  • ecosystem
  • ecosystem-services
  • enviroatlas
  • environment
  • environmental-atlas
  • exposure
  • geo
  • geoss
  • health
  • impact
  • land
  • land-cover
  • maryland
  • md
  • national
  • natural-resources
  • north-america
  • recreation
  • surface-water
  • united-states
  • water
  • wetlands
isopen False
metadata_created 2025-11-19T20:20:43.760614
metadata_modified 2025-11-19T20:20:43.760620
notes The Baltimore, MD EnviroAtlas Meter-scale Urban Land Cover (MULC) dataset comprises 4,545 km2 around the city of Baltimore and portions of surrounding counties. These MULC data and maps were derived from LiDAR and 1-m pixel, four-band (red, green, blue, and infrared light) leaf-on aerial photography acquired from the United States Department of Agriculture (USDA) National Agriculture Imagery Program (NAIP) as well as ancillary vector data (e.g., roads, building footprints). Seven land cover classes were mapped: Water, Impervious Surfaces, Soil/Barren, Trees, Grass/Herbaceous, Agriculture, and Wetlands (Woody and Emergent). Wetlands were delineated using the best available existing wetlands data, which was a National Wetlands Inventory (NWI) layer from the years 1981, 1999, and 2013 (http://wetlands.fws.gov). An analysis of about 600 completely random and 90 stratified random photo-interpreted land cover reference points yielded a simple overall user's accuracy (MAX) of 90% and an overall fuzzy user's accuracy (RIGHT) of 93% within the census block group boundary (see confusion matrices below). These data were developed as part of the Chesapeake Bay High-Resolution Land Cover Project, a cooperative agreement between the Chesapeake Conservancy and the National Park Service, funded through an interagency agreement with the Environmental Protection Agency (EPA). The Chesapeake Conservancy, under the direction of Margaret Markham, created the initial statewide 1-meter land cover data. EPA added agriculture and wetlands taken from ancillary data sources. See detailed processing steps and workflow below. This dataset was produced by the Chesapeake Conservancy, the National Park Service, and the US EPA to support research and online mapping activities related to EnviroAtlas. EnviroAtlas (https://www.epa.gov/enviroatlas) allows the user to interact with a web-based, easy-to-use, mapping application to view and analyze multiple ecosystem services for the contiguous United States. The dataset is available as downloadable data (https://edg.epa.gov/data/Public/ORD/EnviroAtlas) or as an EnviroAtlas map service. Additional descriptive information about each attribute in this dataset can be found in its associated EnviroAtlas Fact Sheet (https://www.epa.gov/enviroatlas/enviroatlas-fact-sheets).
num_resources 4
num_tags 28
title EnviroAtlas - Baltimore, MD - Meter-Scale Urban Land Cover (MULC) Data