13 datasets found
  1. C

    Green Roofs - Map

    • techchange.org
    • data.cityofchicago.org
    application/rdfxml +5
    Updated Feb 11, 2025
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    City of Chicago (2025). Green Roofs - Map [Dataset]. https://techchange.org/2015/07/
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    csv, application/rssxml, application/rdfxml, xml, tsv, jsonAvailable download formats
    Dataset updated
    Feb 11, 2025
    Dataset authored and provided by
    City of Chicago
    Description

    This map and corresponding dataset provide the location, satellite images and square footage of existing green roofs within the City of Chicago. This information is derived from an analysis of high-spatial resolution (50cm), pan-sharpened, ortho-rectified, 8-band multi-spectral satellite images collected by Digital Globe’s Worldview-2 satellite. The City supplied the consultant with a 2009 City boundary shapefile to determine the required extent of the imagery. Acquisition of three different strips of imagery corresponding to the satellite’s paths was required. These strips of imagery spanned three consecutive months and were collected in August 2010 (90% coverage), September 2010 (5% coverage) and October 2010 (5% coverage). The results of the analysis include overall count of vegetated roofs, their total square footage, and the ratio of required to elective vegetated roofs. A total of 359 vegetated roofs were identified within the City of Chicago. The total square footage of these vegetated roofs was calculated to be approximately 5,469,463 square feet. The ratio of required vegetated roofs to elective vegetative roofs was 297:62 (~5:1). The median size of the vegetated roofs was calculated to be 5,234 square feet.

  2. d

    Green Roofs - KML

    • catalog.data.gov
    • data.cityofchicago.org
    • +5more
    Updated Dec 2, 2023
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    data.cityofchicago.org (2023). Green Roofs - KML [Dataset]. https://catalog.data.gov/dataset/green-roofs-kml
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    Dataset updated
    Dec 2, 2023
    Dataset provided by
    data.cityofchicago.org
    Description

    This map and corresponding dataset provide the location, satellite images and square footage of existing green roofs within the City of Chicago. This dataset is in KML format. To view or use these files, special GIS software such as Google Earth is required. This information is derived from an analysis of high-spatial resolution (50cm), pan-sharpened, ortho-rectified, 8-band multi-spectral satellite images collected by Digital Globe’s Worldview-2 satellite. The City supplied the consultant with a 2009 City boundary shapefile to determine the required extent of the imagery. Acquisition of three different strips of imagery corresponding to the satellite’s paths was required. These strips of imagery spanned three consecutive months and were collected in August 2010 (90% coverage), September 2010 (5% coverage) and October 2010 (5% coverage). The results of the analysis include overall count of vegetated roofs, their total square footage, and the ratio of required to elective vegetated roofs. A total of 359 vegetated roofs were identified within the City of Chicago. The total square footage of these vegetated roofs was calculated to be approximately 5,469,463 square feet. The ratio of required vegetated roofs to elective vegetative roofs was 297:62 (~5:1). The median size of the vegetated roofs was calculated to be 5,234 square feet.

  3. d

    Green Roofs - Shapefile

    • catalog.data.gov
    • data.cityofchicago.org
    • +1more
    Updated Dec 22, 2023
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    data.cityofchicago.org (2023). Green Roofs - Shapefile [Dataset]. https://catalog.data.gov/dataset/green-roofs-shapefile
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    Dataset updated
    Dec 22, 2023
    Dataset provided by
    data.cityofchicago.org
    Description

    This map and corresponding dataset provide the location, satellite images and square footage of existing green roofs within the City of Chicago. This dataset is in ESRI shapefile format. To view or use these files, compression software and special GIS software, such as ESRI ArcGIS, is required. This information is derived from an analysis of high-spatial resolution (50cm), pan-sharpened, ortho-rectified, 8-band multi-spectral satellite images collected by Digital Globe’s Worldview-2 satellite. The City supplied the consultant with a 2009 City boundary shapefile to determine the required extent of the imagery. Acquisition of three different strips of imagery corresponding to the satellite’s paths was required. These strips of imagery spanned three consecutive months and were collected in August 2010 (90% coverage), September 2010 (5% coverage) and October 2010 (5% coverage). The results of the analysis include overall count of vegetated roofs, their total square footage, and the ratio of required to elective vegetated roofs. A total of 359 vegetated roofs were identified within the City of Chicago. The total square footage of these vegetated roofs was calculated to be approximately 5,469,463 square feet. The ratio of required vegetated roofs to elective vegetative roofs was 297:62 (~5:1). The median size of the vegetated roofs was calculated to be 5,234 square feet.

  4. d

    EnviroAtlas - Memphis, TN - Green Space Proximity Gradient.

    • datadiscoverystudio.org
    • gimi9.com
    • +1more
    Updated Feb 8, 2018
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    (2018). EnviroAtlas - Memphis, TN - Green Space Proximity Gradient. [Dataset]. http://datadiscoverystudio.org/geoportal/rest/metadata/item/f42fa2ca9fb64d959967d43685cdffa8/html
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    Dataset updated
    Feb 8, 2018
    Description

    description: In any given 1-square meter point in this EnviroAtlas dataset, the value shown gives the percentage of square meters of greenspace within 1/4 square kilometer centered over the given point. Green space is defined as Trees & Forest, Grass & Herbaceous, Agriculture, Woody Wetlands, and Emergent Wetlands. Water is shown as "-99999" in this dataset to distinguish it from land areas with very low green space. This dataset was produced by 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).; abstract: In any given 1-square meter point in this EnviroAtlas dataset, the value shown gives the percentage of square meters of greenspace within 1/4 square kilometer centered over the given point. Green space is defined as Trees & Forest, Grass & Herbaceous, Agriculture, Woody Wetlands, and Emergent Wetlands. Water is shown as "-99999" in this dataset to distinguish it from land areas with very low green space. This dataset was produced by 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).

  5. d

    EnviroAtlas - Salt Lake City, UT - Greenspace Proximity Gradient

    • catalog.data.gov
    Updated Apr 11, 2025
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    U.S. Environmental Protection Agency, Office of Research and Development-Sustainable and Healthy Communities Research Program, EnviroAtlas (Point of Contact) (2025). EnviroAtlas - Salt Lake City, UT - Greenspace Proximity Gradient [Dataset]. https://catalog.data.gov/dataset/enviroatlas-salt-lake-city-ut-greenspace-proximity-gradient5
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    Dataset updated
    Apr 11, 2025
    Dataset provided by
    U.S. Environmental Protection Agency, Office of Research and Development-Sustainable and Healthy Communities Research Program, EnviroAtlas (Point of Contact)
    Area covered
    Salt Lake City, Utah
    Description

    In any given 1-square meter point in this EnviroAtlas dataset, the value shown gives the percentage of square meters of greenspace within 1/4 square kilometer centered over the given point. In this community, green space is defined as Trees & Forest, Shrubs, Grass & Herbaceous, Woody Wetlands, and Emergent Wetlands. Water is shown as "-99999" in this dataset to distinguish it from land areas with very low green space. This dataset was produced by 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).

  6. d

    EnviroAtlas - Fresno, CA - Greenspace Proximity Gradient.

    • datadiscoverystudio.org
    • catalog.data.gov
    • +1more
    Updated Feb 8, 2018
    + more versions
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    (2018). EnviroAtlas - Fresno, CA - Greenspace Proximity Gradient. [Dataset]. http://datadiscoverystudio.org/geoportal/rest/metadata/item/a94b5fc822634a999e8063abe6f515fb/html
    Explore at:
    Dataset updated
    Feb 8, 2018
    Description

    description: In any given 1-square meter point in this EnviroAtlas dataset, the value shown gives the percentage of square meters of greenspace within 1/4 square kilometer centered over the given point. Green space is defined as Trees & Forest, Grass & Herbaceous, Agriculture, and Orchards. Water is shown as "-99999" in this dataset to distinguish it from land areas with very low green space. This dataset was produced by 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).; abstract: In any given 1-square meter point in this EnviroAtlas dataset, the value shown gives the percentage of square meters of greenspace within 1/4 square kilometer centered over the given point. Green space is defined as Trees & Forest, Grass & Herbaceous, Agriculture, and Orchards. Water is shown as "-99999" in this dataset to distinguish it from land areas with very low green space. This dataset was produced by 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).

  7. a

    Louisville Metro KY - Urban Heat Island Neighborhood Data

    • louisville-metro-opendata-lojic.hub.arcgis.com
    • data.louisvilleky.gov
    • +3more
    Updated May 4, 2022
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    Louisville/Jefferson County Information Consortium (2022). Louisville Metro KY - Urban Heat Island Neighborhood Data [Dataset]. https://louisville-metro-opendata-lojic.hub.arcgis.com/maps/LOJIC::louisville-metro-ky-urban-heat-island-neighborhood-data
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    Dataset updated
    May 4, 2022
    Dataset authored and provided by
    Louisville/Jefferson County Information Consortium
    License

    https://louisville-metro-opendata-lojic.hub.arcgis.com/pages/terms-of-use-and-licensehttps://louisville-metro-opendata-lojic.hub.arcgis.com/pages/terms-of-use-and-license

    Area covered
    Louisville, Kentucky
    Description

    Mayor Greg Fischer formed the Louisville Metro Office of Sustainability in 2012 with a mission of promoting environmental conservation, the health, wellness and prosperity of our citizens, and embedding sustainability into the culture of the Louisville community. Creating a culture of sustainability will be achieved through broad-based education and awareness efforts as well as implementation of projects and initiatives to influence behavior change.Data Dictionary: NEIGHBORHOOD - The neighborhood in Louisville.TOTAL NEW GREEN ROOFS - The number of green roofs installed. Each green roof is assumed to be 10,000 square feet.TOTAL GRASS PLANTED - The amount of bare dirt land planted with grass or other greenery, measured in hectares.TOTAL TREES PLANTED - The number of new trees planted.TOTAL COOL PAVING - Cool paving is pavement material engineered to exhibit a higher reflectivity than conventional pavement. Cool paving can be porous, made of a light colored material, or both. Cool paving is measured in hectares.TOTAL NEW COOL ROOFS - The number of cool roofs installed. Each cool roof is assumed to be 10,000 square feet. A cool roof can be steep-sloped or low-sloped or flat. A cool roof is define as a roof with a top-level material certified by ENERGY STAR or rated by the Cool Roof Rating Council as "cool." More information is available at https://louisvilleky.gov/government/sustainability/incentives#1Contact: sustainability@louisvilleky.gov

  8. d

    EnviroAtlas - Portland, OR - Greenspace Proximity Gradient.

    • datadiscoverystudio.org
    • datasets.ai
    • +2more
    Updated Feb 8, 2018
    + more versions
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    (2018). EnviroAtlas - Portland, OR - Greenspace Proximity Gradient. [Dataset]. http://datadiscoverystudio.org/geoportal/rest/metadata/item/f3f5c7697df048a0aa6613987e68e81a/html
    Explore at:
    Dataset updated
    Feb 8, 2018
    Description

    description: In any given 1-square meter point in this EnviroAtlas dataset, the value shown gives the percentage of square meters of greenspace within 1/4 square kilometer centered over the given point. Green space is defined as Trees & Forest, Grass & Herbaceous, Agriculture, Woody Wetlands, and Emergent Wetlands. Water is shown as "-99999" in this dataset to distinguish it from land areas with very low green space. This dataset was produced by the US EPA to support research and online mapping activities related to EnviroAtlas. EnviroAtlas (http:/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).; abstract: In any given 1-square meter point in this EnviroAtlas dataset, the value shown gives the percentage of square meters of greenspace within 1/4 square kilometer centered over the given point. Green space is defined as Trees & Forest, Grass & Herbaceous, Agriculture, Woody Wetlands, and Emergent Wetlands. Water is shown as "-99999" in this dataset to distinguish it from land areas with very low green space. This dataset was produced by the US EPA to support research and online mapping activities related to EnviroAtlas. EnviroAtlas (http:/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).

  9. d

    EnviroAtlas - Green Bay, WI - Impervious Proximity Gradient.

    • datadiscoverystudio.org
    • gimi9.com
    • +1more
    Updated Feb 8, 2018
    + more versions
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    (2018). EnviroAtlas - Green Bay, WI - Impervious Proximity Gradient. [Dataset]. http://datadiscoverystudio.org/geoportal/rest/metadata/item/db4eac7b89ae40218d8efd876c70eb26/html
    Explore at:
    Dataset updated
    Feb 8, 2018
    Description

    description: In any given 1-square meter point in this EnviroAtlas dataset, the value shown gives the percentage of impervious surface within 1 square kilometer centered over the given point. Water is shown as '-99999' in this dataset to distinguish it from land areas with low impervious. This dataset was produced by 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 ).; abstract: In any given 1-square meter point in this EnviroAtlas dataset, the value shown gives the percentage of impervious surface within 1 square kilometer centered over the given point. Water is shown as '-99999' in this dataset to distinguish it from land areas with low impervious. This dataset was produced by 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 ).

  10. R

    Zoning

    • data.buffalony.gov
    Updated Sep 2, 2021
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    Office of Strategic Planning (2021). Zoning [Dataset]. https://data.buffalony.gov/w/5843-jknb/ixf7-aa9j?cur=-adc2hVQtr-
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    tsv, csv, application/rssxml, xml, kmz, kml, application/rdfxml, application/geo+jsonAvailable download formats
    Dataset updated
    Sep 2, 2021
    Dataset authored and provided by
    Office of Strategic Planning
    License

    https://www.usa.gov/government-workshttps://www.usa.gov/government-works

    Description

    The Zoning Map is part of the Unified Development Ordinance (UDO). The UDO codifies the land use policies of the Comprehensive Plan and Buffalo Green Code planning documents. It combines land use, subdivision, and public realm (e.g.; streets, parks, and sidewalks) standards into a single, user-friendly document.The Buffalo Green Code Unified Development Ordinance (UDO) and the Zoning Map divides the City of Buffalo into the following zones: A. Neighborhood Zones N-1D Downtown/Regional Hub N-1C Mixed-Use Core N-1S Secondary Employment Center N-2C Mixed-Use Center N-2E Mixed-Use Edge N-2R Residential N-3C Mixed-Use Center N-3E Mixed-Use Edge N-3R Residential N-4-30 Single-Family N-4-50 Single-Family N-DER Downtown Entertainment Review Overlay B. District Zones D-R Residential Campus D-M Medical Campus D-E Educational Campus D-S Strip Retail D-C Flex Commercial D-IL Light Industrial D-IH Heavy Industrial D-OS Square D-OG Green D-ON Natural C. Corridor Zones C-M Metro Rail C-R Rail C-W Waterfront

  11. e

    ORT2LT - 1: 2,000 digital raster orthophotographic map of county centers of...

    • data.europa.eu
    unknown
    Updated Jan 30, 2019
    + more versions
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    (2019). ORT2LT - 1: 2,000 digital raster orthophotographic map of county centers of the Republic of Lithuania (2018) [Dataset]. https://data.europa.eu/data/datasets/-863eb965-6e15-49f6-9db9-c891febed171-?locale=da
    Explore at:
    unknownAvailable download formats
    Dataset updated
    Jan 30, 2019
    Area covered
    Lithuania
    Description

    Download service - M 1: 2,000 digital raster orthophotographic map ORT2LT of county centers of the Republic of Lithuania created in 2018 based on 2017 aerial photos. The cell (pixel) size of ORT2LT orthophotographic maps does not exceed 10x10 cm in the area. Absolute accuracy RMSE≤0.2 m (root mean square error (RMSE)) on orthophotographic maps of clearly visible terrain points. The maps are in real color (RGB) - red (R - R), green (G - Green), blue (B - Blue) markings. Territory: Vilnius, Kaunas, Utena, Klaipėda, Panevėžys, Šiauliai, Alytus, Telšiai, Marijampolė and Tauragė cities. Important: Orthophotographic maps provided via the LEI portal in TIFF format are transformed from the LizardTech MrSID format. The map files provided are smaller in size, and the quality may differ slightly from the original TIFF maps. Please contact the National Land Service for original TIFF maps.

  12. C

    california blue line site

    • data.cityofchicago.org
    csv, xlsx, xml
    Updated Feb 11, 2025
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    City of Chicago (2025). california blue line site [Dataset]. https://data.cityofchicago.org/w/uqwa-p3mf/3q3f-6823?cur=MgvJiOTPAyz
    Explore at:
    xml, csv, xlsxAvailable download formats
    Dataset updated
    Feb 11, 2025
    Authors
    City of Chicago
    Description

    This map and corresponding dataset provide the location, satellite images and square footage of existing green roofs within the City of Chicago. This information is derived from an analysis of high-spatial resolution (50cm), pan-sharpened, ortho-rectified, 8-band multi-spectral satellite images collected by Digital Globe’s Worldview-2 satellite. The City supplied the consultant with a 2009 City boundary shapefile to determine the required extent of the imagery. Acquisition of three different strips of imagery corresponding to the satellite’s paths was required. These strips of imagery spanned three consecutive months and were collected in August 2010 (90% coverage), September 2010 (5% coverage) and October 2010 (5% coverage). The results of the analysis include overall count of vegetated roofs, their total square footage, and the ratio of required to elective vegetated roofs. A total of 359 vegetated roofs were identified within the City of Chicago. The total square footage of these vegetated roofs was calculated to be approximately 5,469,463 square feet. The ratio of required vegetated roofs to elective vegetative roofs was 297:62 (~5:1). The median size of the vegetated roofs was calculated to be 5,234 square feet.

  13. a

    Interactive City Council District Finder v24

    • gis-cityofbowie.hub.arcgis.com
    Updated Jan 9, 2014
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    City of Bowie GIS (2014). Interactive City Council District Finder v24 [Dataset]. https://gis-cityofbowie.hub.arcgis.com/maps/79e99d79f9b844fe9a41164df048bc1c
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    Dataset updated
    Jan 9, 2014
    Dataset authored and provided by
    City of Bowie GIS
    Area covered
    Description

    District 1 District 1A Bowie Station Horsepen Ridge Huntington Huntington Crest Northridge Ray's Wood Rolling Hills District 1B Belair Greens Belair Town Chapel Forge Heartfields (Assisted Living Facility) Idlewild Meadowbrook (north of Millstream Drive) Overbrook Rockledge Saddlebrook (East) Saddlebrook West Sumner Chase Victoria Heights Whitehall Yorktown District 2 District 2A Bowie Forest Fairview Glenridge Grady's Walk Highbridge Park Meadowbrook (south and west of Millstream Drive) Stewart's Landing District 2B Buckingham Derbyshire Forest Hills Foxhill Kenilworth Somerset Somerset Park Tulip Grove District 3 District 3A Allen Pond Bowie Commons Evergreen Apartments (SeniorApartments) Longridge (moved to District 2 -3/2012) Northview Princeton Square Princeton Square Addition Oak Pond Old Stage Spring Meadows Summerville (Assisted Living Facility) Westview The Willows (Senior Apartments) Woodmore Estates Woodmore Highlands District 3B Archstone Apartments (Governor's Green) Covington (North of Excalibur Road) Enfield Chase Ensleigh Essington Evergreen Estates Heather Hills Heather Ridge Apartments Longleaf Palisades Pin Oak Village Vistas Woodland Lake District 4 District 4A Amber Meadows Amber Meadow II Ashleigh (Mt. Oak Road) Covington (south of Excalibur Road) Glen Allen Lake Village Manor Mitchellville East Oaktree Pointer Ridge Ridgeview Estates District 4B Ashleigh Ashleigh Station Collington Manor Collington Ridge Collington Station Devonshire Estates Graystone Grovehurst Tall Oaks Crossing Ternberry Woodmore at Oakcreek

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    Learn how you can add new datasets to our index.

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City of Chicago (2025). Green Roofs - Map [Dataset]. https://techchange.org/2015/07/

Green Roofs - Map

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19 scholarly articles cite this dataset (View in Google Scholar)
csv, application/rssxml, application/rdfxml, xml, tsv, jsonAvailable download formats
Dataset updated
Feb 11, 2025
Dataset authored and provided by
City of Chicago
Description

This map and corresponding dataset provide the location, satellite images and square footage of existing green roofs within the City of Chicago. This information is derived from an analysis of high-spatial resolution (50cm), pan-sharpened, ortho-rectified, 8-band multi-spectral satellite images collected by Digital Globe’s Worldview-2 satellite. The City supplied the consultant with a 2009 City boundary shapefile to determine the required extent of the imagery. Acquisition of three different strips of imagery corresponding to the satellite’s paths was required. These strips of imagery spanned three consecutive months and were collected in August 2010 (90% coverage), September 2010 (5% coverage) and October 2010 (5% coverage). The results of the analysis include overall count of vegetated roofs, their total square footage, and the ratio of required to elective vegetated roofs. A total of 359 vegetated roofs were identified within the City of Chicago. The total square footage of these vegetated roofs was calculated to be approximately 5,469,463 square feet. The ratio of required vegetated roofs to elective vegetative roofs was 297:62 (~5:1). The median size of the vegetated roofs was calculated to be 5,234 square feet.

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