Clicking here will return you to the District Home Page
Navigation Projects
Hydrographic Survey Home
Mississippi River
Coralville, Red Rock, and Saylorville Reservoirs
Illinois Waterway
Info Request
Recent Hydrographic Condition Surveys
I/LP - 321.0-322.0 Dan Ryan Expressway w/ Bubbley Creek
I/LP - 322.0-323.0 Dan Ryan Express (Upper)
I/LP - 323.0-324.0 Roosevelt (Lower)
I/LP - 324.0-325.0 Roosevelt (Upper)
M/21 - 332.0-333.5 Hogback to Willow Island
M/21 - 333.5-335.0 Willow Island to Willow Island Upper
_2008 UMR Spring Recon Report
Recent Dredge Cuts
2009 UMR Dredge Schedule
MVR-Dredge Schedule-2008-IWW
Downloadable Viewers
Autodesk DWF Viewer
Adobe Acrobat Reader
Rock Island District Internet
Hydrographic Surveys

The Rock Island District Corps of Engineer's Operation and Maintenance mission includes monitoring our navigation projects to provide safe navigation. This requires periodic hydrographic surveying to determine the condition of the projects.

Recent and archived hydrographic surveys, performed by the Rock Island District, can be found at this address. Information is presented as a viewable (see below for view information) survey plot. If desired, you may obtain survey metadata and ASCII data sets through the "Info Request" link on the left.

Please note that surveys for the entirety of each project is not yet available. As of this date, primarily the historic trouble area surveys are present. The remaining areas will be filled in as completed.

Before viewing any of the files, please make sure you have one or more of the viewers listed at the bottom of this page available.

Contact Info

  • Normal business hours are 7:30 - 4:00 pm (CST) Monday through Friday
  • Information Assistance: 309-794-5505
  • Fax: 309-794-5180
  • Mailing Address:

                USACE - Rock Island
                ATTN: OD-T
                Clock Tower Bldg.
                PO Box 2004
                Rock Island, IL 61204-2004

Downloadable Viewers
Note: If unable to load web plot, you may need to upgrade to Autodesk DWF Viewer version 4.1

Autodesk DWF Viewer
Download Size
2.98 MB

Adobe Acrobat
Download Size
6.5 MB
Autodesk® ‘DWF Viewer’ uses the drawing web format (DWF), a lightweight vector file format that preserves the security and precision of original DWG drawing files, while ensuring the speedy transmission of drawings. The Autodesk® ‘DWF Viewer’ does not require any other software except a web browser and is free of charge. To download, click on the above link, fill in your name and e-mail, then click on the ‘Get Autodesk DWF Viewer’ button to install onto your computer. If the download is successful, a viewable architectural drawing will appear in which you can pan and zoom the image. Adobe® Acrobat® Reader™ is free, and freely distributable, software that lets you view and print Adobe Portable Document Format (PDF) files on all major computer platforms, as well as fill in and submit PDF forms online.