Big Ten Academic Alliance Geospatial Discovery Portal

Big Ten Academic Alliance Geoportal

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1.
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5 Year Program Highway Location: Iowa, United States

Iowa Department of Transportation. Iowa Highway Five Year Improvement Program with amendments. Created in June 2018.

2.
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5 Year Program Structure Location: Iowa, United States

Iowa Department of Transportation. Iowa Highway Five Year Improvement Program with amendments for structures only. Created in June 2018.

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Active Digital Message Signs: Iowa

Iowa Department of Transportation's Intelligent Transportation System (ITS) Digital Message Signs (DMS) devices.

4.
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AdoptAHighway Current Adopted Location: Iowa, United States

Iowa Department of Transportation. A visual representation of the currently adopted sections of highway in Iowa. Additionally, this map displays the sections of highway that are neve...

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AdoptAHighway Never Adoptable Location: Iowa, United States

Iowa Department of Transportation. A visual representation of the currently adopted sections of highway in Iowa. Additionally, this map displays the sections of highway that are neve...

6.
Aerial Photo Counties: Iowa, 2016

Aerial Photo Counties: Iowa, 2016

2016. These county-wide datasets have been up-sampled to a one-meter-resolution raster, in jp2 format.

7.
Aerial Photography Counties: Iowa, 1930s

Aerial Photography Counties: Iowa, 1930s

1930. Iowa Department of Natural Resources. 1930s Aerial Photography of Iowa County dataset in a zipped file.

8.
Aerial Photography Counties: Iowa, 1950s

Aerial Photography Counties: Iowa, 1950s

1950. Iowa Department of Natural Resources. 1950s Aerial Photography of Iowa County dataset in a zipped file.

9.
Aerial Photography Counties: Iowa, 1960s

Aerial Photography Counties: Iowa, 1960s

1960. Iowa Department of Natural Resources. 1960s Aerial Photography of Iowa County Dataset in a zipped file.

10.
Aerial Photography Counties: Iowa, 1970s

Aerial Photography Counties: Iowa, 1970s

1970. Iowa Department of Natural Resources. 1970s Aerial Photography of Iowa Each zip file contains a county raster dataset.

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.

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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.

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Aerial Photography Dates: Iowa, 1960s

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

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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.
Agricultural Drainage Wells: Iowa

Agricultural Drainage Wells: Iowa

2017. Iowa Department of Natural Resources. Agricultural Drainage Wells in Iowa Wells and intakes.

16.
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Airport Approach Surface Location: Iowa, United States

Iowa Department of Transportation. The approach surface is longitudinally centered on the extended runway centerline and extends outward and upward from each end of the primary surfa...

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Airport Approach Surface Precision Location: Iowa, United States

Iowa Department of Transportation. The approach surface is longitudinally centered on the extended runway centerline and extends outward and upward from each end of the primary surfa...

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Airport Conical Surface Location: Iowa, United States

Iowa Department of Transportation. The Conical surface extends outwards and upwards from the boundary of the horizontal surface at a slope of 20:1 for a horizontal distance of 4,000 .

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Airport Horizontal Surface Location: Iowa, United States

Iowa Department of Transportation. The Horizontal surface is a plane 150 above the established airport elevation. The perimeter of which is constructed by swinging arcs of specified ...

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Airport Location: Iowa

Iowa Department of Transportation. Airport locations and information in Iowa including contact information, location details and more.