Big Ten Academic Alliance Geospatial Discovery Portal

Big Ten Academic Alliance Geoportal

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1.
Vector Created with Sketch.

Aerial Imagery (DOQ) Grid: Michigan, 1992-1998

1992-1998. Digital Ortho-Quadrangle grid for 1992 1998 aerial imagery acquisitions.

2.
Point image/svg+xml

Aerial Photo Centers, Maryland Imagery Acquisition Flight Information: Maryland

2018. Aerial photography centers for the 2016 & 2017 high-resolution imagery acquisition.

3.
Polygon

Aerial Photo Grid: Dublin, Ohio

2015. Political and Administrative Boundaries around Dublin, Ohio. This includes the layers: Tax Increment Finance Zones, Annexation History, Subdivision...

4.
Polygon

Aerial Photo Grid: Dublin, Ohio, 2009

2009. Political and Administrative Boundaries around Dublin, Ohio. This includes the layers: Tax Increment Finance Zones, Annexation History, Subdivision...

5.
Polygon

Aerial Photo Tile Grid, 3 inch, Maryland Imagery Acquisition Flight Information: Baltimore, Annapolis, Gaithersburg, Maryland

2016. This data contains the tile layout for imagery acquistion as part of the Digital High-Resolution Aerial Photography Program. Note this tile layout ...

6.
Polygon

Aerial Photo Tile Grid, 6 inch, Maryland Imagery Acquisition Flight Information: Maryland

2016. This data contains the tile layout for imagery acquistion as part of the Digital High-Resolution Aerial Photography program. Note this tile layout ...

7.
Aerial Photography: Carver County, Minnesota, 2005

Aerial Photography: Carver County, Minnesota, 2005

2005. Carver County 2005 Aerometric Imagery.

8.
Aerial Photography: Carver County, Minnesota, 2008

Aerial Photography: Carver County, Minnesota, 2008

2008. Carver County 2008 Pictometry Imagery.

9.
Aerial Photography: Carver County, Minnesota, 2011

Aerial Photography: Carver County, Minnesota, 2011

2011. Carver County 2011 Pictometry Imagery.

10.
Aerial Photography: Carver County, Minnesota, 2013

Aerial Photography: Carver County, Minnesota, 2013

2013. Carver County 2013 Aerometric Imagery.

11.
Aerial Photography Dates File: Iowa, 1930s

Aerial Photography Dates File: Iowa, 1930s

1930. Iowa Department of Natural Resources. This file contains a shapefile of the centroids of individual scanned photos, and the associated date.

12.
Vector Created with Sketch.

Aerial Photography Dates: Iowa, 1950s

1950. Iowa Department of Natural Resources. Zipped file Contains a dateset of the centroids, with dates, of the individual images used.

13.
Vector Created with Sketch.

Aerial Photography Dates: Iowa, 1960s

1960. Iowa Department of Natural Resources. This dataset is centroids with dates of the individual images used.

14.
Vector Created with Sketch.

Aerial Photography Dates: Iowa, 1970s

1970. Iowa Department of Natural Resources. This shapefile has centroids with dates of all images used in this dataset.

15.
Vector Created with Sketch.

Basemap of Washington, D.C.

The DC Basemap web service provides a reference map for the District of Columbia projected in Web Mercator. Access theArcGIS Rest endpointorview a ...

16.
Vector Created with Sketch.

Basemap of Washington, D.C. in Dark Gray

The Dark Gray DC Basemap web service provides a reference map for the District of Columbia projected in Web Mercator. Access theArcGIS Rest endpoin...

17.
Vector Created with Sketch.

Basemap of Washington, D.C. in Light Gray

The Light Gray DC Basemap web service provides a reference map for the District of Columbia projected in Web Mercator. Access theArcGIS Rest endpoi...

18.
Point image/svg+xml

Centroids for Minnesota Historical Aerial Photographs Online (MHAPO), 1920-2000

1920-2000. John R. Borchert Map Library and Minnesota Department of Natural Resources (MNDNR). The points in this dataset represent the approximate geographic location of the centroids for scanned, non-georeferenced air photos that were captu...

19.
Vector Created with Sketch.

CIR Aerial Photography Dates: Iowa, 1980s

1980. Iowa Department of Natural Resources. This data has centroids and dates of individual images used.

20.
Polygon

City Boundary: Ann Arbor, Michigan, 2015

2015. City of Ann Arbor. Polygons defining the boundary of the city of Ann Arbor.