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#1 Federal
Mississippi River, Pool 9 Digital Elevation Model, First Return
- Organization: Department of the Interior
- Dataset Last Updated: January 28, 2026 at 12:00 AM
In 2007, the U.S Army Corps of Engineers’ Upper Mississippi River Restoration (UMRR) program partnered with the Iowa Department of Natural Resources (IDNR) to collect FEMA-grade, bluff-to-bluff...
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Search relevance: 1.00 | Views last month: 2 | Catalog Last Checked: September 10, 2026 at 09:08 PM

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