Starting out 2025 to remind users that Iowa DOT Survey Control Website Portal is available from the Iowa DOT Open Data website.
The IaDOT Survey Control Website Portal primarily provides Control Survey Point data from IaDOT Project support and Monumentation established as part of Project Development and Design. The Portal has included notable improvements over the second half of 2024 to improve user support and content information throughout Iowa, and dually includes all Iowa County GPS Control Networks (to date). The Portal has recently included support for Municipal Control information (added as provided), support for Highwater Mark information, continued Geometric point locations from IaDOT Districts, and further support of External Survey Control related resources.
Point Features are also available for Content Connections as part of ArcGIS REST Services Directory.
Explore the IaDOT Survey Control Workflows Menu options for Bulk Downloads (Survey Public Download) and includes support to access IaDOT Historical Plans (IaDOT ERMS System) directly within Survey Portal using Spatial (location) query options.
Reminder that Public Users "do not" Login upon access (simply select CANCEL upon access, then "ok" regarding additional dialog notices which are Internal to IaDOT Users only). The same complete (Active) content information is available to ALL users regardless of Login method.
Questions and/or Support questions can be directed from the Iowa DOT Survey Portal Home tab "Contact Us" listed.