Big Ten Academic Alliance Geospatial Discovery Portal

Big Ten Academic Alliance Geoportal

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1.
Raster

County-wide Mosaics of 7.5 Minute USGS Topographic Maps: Iowa

2018. Iowa Department of Natural Resources. Topographic Maps Each zip file contains a MrSid compressed image of the topographic quads of a certain Iowa county.

2.
Vector Created with Sketch.

LiDAR Dates: Iowa

Collection dates for individual tiles.

3.
One-Meter Hillshade of Iowa Counties

One-Meter Hillshade of Iowa Counties

Each zipped file contains an individual County dataset.

4.
Aerial Imagery: Sherburne County, Minnesota, 2014

Aerial Imagery: Sherburne County, Minnesota, 2014

2014. Sherburne County, Minnesota. Aerial imagery obtained in the spring of 2014.

5.
Aerial Imagery: Sherburne County, Minnesota, 2015

Aerial Imagery: Sherburne County, Minnesota, 2015

2015. Sherburne County, Minnesota. Digital Color orthophotography covering Sherburne County, Minnesota.

6.
Raster

Aerial Photography 2017 - Mosaics: Philadephia, Pennsylvania

2017. Philadelphia aerial photography city wide mosaic. The dataset consists of tiled orthogonal imagery produced from nadir images captured by Pictometr...

7.
Raster

Aerial Photography 2017 1m - tile index: Philadephia, Pennsylvania

2017. Philadelphia aerial photography 1 meter pixels tile index. The dataset consists of tiled orthogonal imagery produced from nadir images captured by ...

8.
Raster

Aerial Photography 2017 1m: Philadephia, Pennsylvania

2017. Philadelphia aerial photography 1 meter pixels. The dataset consists of tiled orthogonal imagery produced from nadir images captured by Pictometry ...

9.
Raster

Aerial Photography 2017 3in - tile index: Philadephia, Pennsylvania

2017. Philadelphia aerial photography 3 inch pixels tile index. The dataset consists of tiled orthogonal imagery produced from nadir images captured by P...

10.
Raster

Aerial Photography 2017 3in: Philadephia, Pennsylvania

2017. Philadelphia aerial photography 3 inch pixels. The dataset consists of tiled orthogonal imagery produced from nadir images captured by Pictometry I...

11.
Aerial Photography: Carver County, Minnesota, 2017

Aerial Photography: Carver County, Minnesota, 2017

2017. CarverGIS. Carver County 2017 Pictometry Imagery.

12.
Aerial Photography, Fall: Dakota County, Minnesota, 2017

Aerial Photography, Fall: Dakota County, Minnesota, 2017

2017. Dakota County. County wide ortho photography at 6-inch pixel resolution in County Coordinates. The photography was exposed on 11/08/17, 11/09/2017, 11/18/2017 and...

13.
Mixed

Cropland Data Layer: Minnesota, 2017

2017. National Agricultural Statistics Service (NASS), United States Department of Agriculture (USDA). The United States Department of Agriculture (USDA), National Agricultural Statistics Service (NASS) Cropland Data Layer (CDL) is a raster, geo-refe...

14.
Crops for 2014, Derived from National Agricultural Statistics Service: Indiana

Crops for 2014, Derived from National Agricultural Statistics Service: Indiana

2017. United States Department of Agriculture. The following is excerpted from the metadata provided by NASS (USDA) for the source data set CDL_2014_CLIP.tif: "The USDA, NASS Cropland Data Laye...

15.
Crops for 2015, Derived from National Agricultural Statistics Service: Indiana

Crops for 2015, Derived from National Agricultural Statistics Service: Indiana

2017. United States Department of Agriculture. The following is excerpted from the metadata provided by NASS (USDA) for the source data set CDL_2015_CLIP.tif: "The USDA, NASS Cropland Data Laye...

16.
Crops for 2016, Derived from National Agricultural Statistics Service: Indiana

Crops for 2016, Derived from National Agricultural Statistics Service: Indiana

2017. United States Department of Agriculture. The following is excerpted from the metadata provided by NASS (USDA) for the source data set CDL_2016_CLIP.tif: "The USDA, NASS Cropland Data Laye...

17.
General Land Office Maps Counties: Iowa

General Land Office Maps Counties: Iowa

2017. The Office of the State Archaeologist. General Land Office Maps of the State of Iowa Each zip file contains a County-wide raster image.

18.
Raster

High Resolution NHAP CIR for Pennsylvania 1980 to 1987

2017. The National High Altitude Photography (NHAP) program was coordinated by the USGS as an interagency project to acquire cloud-free aerial photograph...

19.
Raster

Imagery 2017 - 3 inch pixels: Allegheny County, Pennsylvania

2017. Orthophotos of Allegheny County, Pennsylvania - An orthoimage is remotely sensed image data that has been positionally corrected for camera lens di...

20.
Raster

Imagery 2017 - 9 inch pixels: Allegheny County, Pennsylvania

2017. Orthophotos of Allegheny County, Pennsylvania - An orthoimage is remotely sensed image data that has been positionally corrected for camera lens di...