Chicago's eastern boundary is formed by Lake Michigan, and the city is divided by the Chicago River into three geographic sections: the North Side, the South Side and the West Side. These sections ...

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Historic Aerial Imagery & Remnant Oak Ecosystems This map application shows imagery captured in ... and in City of Chicago ancillary GIS data (buildings, edge of pavement). These are preliminary ...

Hello Maine GeoLibrary Data Catalog Users. There is currently a partial outage on the process to download GIS data from the Data Catalog impacting the direct catalog discovery and download tools. Our ...