1. 100 Foot Contours - 500k: State of Iowa
2020. Iowa Department of Natural Resources. This map service depicts 2-foot contours, derived from the Iowa LiDAR dataset.
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2. 5 Year Program Highway: Iowa
2021. Iowa Department of Transportation. The Iowa Highway Five Year Improvement Program with amendments. Created in June 2018.
3. 5 Year Program Highway: Iowa
2020. Iowa Department of Transportation. The Iowa Highway Five Year Improvement Program.Iowa Highway Five Year Improvement Program with amendments. Created in June 2018.
4. 5 Year Program Structure: Iowa
2021. Iowa Department of Transportation. Iowa Highway Five Year Improvement Program with amendments for structures only. Created in June 2018.
5. 5 Year Program Structure: Iowa
2020. Iowa Department of Transportation. Iowa Highway Five Year Improvement Program with amendments for structures only. Created in June 2018.
6. 511 Traveler Information Events - Nebraska: Iowa
2020. Iowa Department of Transportation. Current 511 Events for Nebraska. This layer is updated every 10 minutes. This layer is provided as a courtesy from Iowa DOT. Iowa DOT does not take...
7. Above Ground Storage Tank Facility: Iowa
2020. Iowa Department of Natural Resources.
8. Adopt-A-Highway Status: Adopted: Iowa
2020. Iowa Department of Transportation. This layer displays all of the currently adopted Iowa Highway segments as related to the Adopt-A-Highway program. These layers were developed for u...
9. Adopt-A-Highway Status: Never Adoptable: Iowa
2020. Iowa Department of Transportation. This layer represents the sections of highway which are never available for adoption within the Adopt-A-Highway program. This symbolization was dev...
10. Air Emission Points: Iowa
2020. Iowa Department of Natural Resources.