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.

Data set from My Neighborhood Map program.

Vacant Buildings located throughout the City of Baltimore. To be updated twice a month, or as needed.

Vacant Commercial Sales Determined to be Arms-Length and Verified by Assessor's Office Staff.

Not available.

Redmond Facilities Map

Buildings and space owned by the City of Boston

A map of all Baltimore City government entities

Private and public schools located within the City of New Orleans. This information is initially composed by the Louisiana Department of Education. Then this data is verified by the New Orleans Office of Homeland Security and Emergency Preparedness.

Polygon feature representing the zoning districts as defined by the City's Department of Planning. Last Updated 2008