Upper Midwest Environmental Sciences Center
Mississippi River - Pool 26River Mile 203-241.5
Updated October 12, 2017
Upper Mississippi River System (UMRS) Pool 26 is used to describe the region of the UMRS that is impounded by Lock and Dam 26. It extends from Lock and Dam 26 located near Alton, Illinois upstream to Lock and Dam 25 located near Winfield, Missouri. The Long Term Resource Monitoring Program (LTRMP) operates a field station on Pool 26 through the Illinois Natural History Survey. The LTRMP Pool 26 study area includes a portion of the Illinois River.
National Atlas and Seamless data server data have been moved to the National Map.
Aerial Photos (UMESC)
Orthoreferenced Color Infrared Images
In 2010, the EMP partnered with the USFWS to fly and acquire CIR digital aerial photography of Pools 1-13, Upper Mississippi River and Pools Alton–Marseilles, Illinois River at 8"/pixel and 16"/pixel respectively using a mapping-grade Applanix DSS439 digital aerial camera . The photography was collected at a minimum accuracy of 5-10 meters. These are the orthorectified photo mosaics for all or portions of the coverage area. The flights occurred during times of peak vegetation biomass, from August 13, 2010 through September 1, 2010. The mosaics are served as orthoreferenced JPEG2000 images.
- 2011 Pool 26 Orthoreferenced Color Infrared Image (400 MB JPG2000)
On occasion the Center will scan and register aerial photography for special projects. As these data sets are created they're also made available through Web site. For information on how to download these data and obtain a free viewer program or the required .dll files for your GIS program, activate the help button.- 2000 Pool 26, georeferenced true color photo composite (427 MB z15n27 MrSid)
Aquatic Areas (UMESC)
The Aquatic Areas data sets were created to identify areas of similar aquatic habitats. These data are available as polygons and linears. The linear data set contains data for features too narrow to be mapped as polygons (e.g., wing dams, rip rap). For additional information, access the help button.- 1989 Aquatic Areas (1.7 MB z15n83 Shape)
The Center collects bathymetric (i.e., water depth) data in selected portions of the Mississippi River. The data are provided here as high resolution raster data in ArcInfo Grid format, or a simplified shape file with ranges of depth (e.g., depth between 4 and 6 meters are lumped together). Information on how to access these data are available through the help button, and information on how these data are collected and processed are contained in the help pages.- 1997 Bathymetry (3.5 MB UNIX Grid) (3.5 MB PC Grid) (3.8 MB z15n27 Shape) (8.2 MB z15n83 )
Digital Lidar Derivatives
Lidar (Light Detection And Ranging) data are remotely sensed, high-resolution elevation data collected by airplane. The Upper Midwest Environmental Sciences Center processed these data to create Digital Elevation Models (DEMs), 0.5 meter contour lines, and pool-wide hillshade images. These data are a product of the U.S. Army Corps of Engineers’ Upper Mississippi River Restoration (UMRR) Program Long Term Resource Monitoring (LTRM) element, as distributed by the U.S. Geological Survey, Upper Midwest Environmental Sciences Center, La Crosse, Wisconsin. Tier 1 products are derived directly from vendor-provided LAS-format (LASer) files that have not been cleaned or edited in order to serve the data as quickly as possible. Tier 1 data have been quality checked by the vendor and obvious errors removed, but some isolated errors often remain.
|Alton - 24K quad||st2h2_dem.exe (59 MB)||st2h2_con.exe (63 MB)|
|Brussels - 24K quad||st2h5_dem.exe (66 MB)||st2h5_con.exe (70 MB)|
|Columbia Bottom - 24K quad||st2g2_dem.exe (88 MB)||st2g2_con.exe (55 MB)|
|Elsah - 24K quad||st2h3_dem.exe (147 MB)||st2h3_con.exe (127 MB)|
|Florissant - 24K quad||st2g3_dem.exe (37 MB)||st2g3_con.exe (21 MB)|
|Foley - 24K quad||qn4a6_dem.exe (15 MB)||qn4a6_con.exe (18 MB)|
|Grafton - 24K quad||st2h4_dem.exe (223 MB)||st2h4_con.exe (184 MB)|
|Kampville - 24K quad||st2g5_dem.exe (172 MB)||st2g5_con.exe (128 MB)|
|Maryknoll - 24K quad||st2h7_dem.exe (8 MB)||st2h7_con.exe (5 MB)|
|Nutwood - 24K quad||N/A||N/A|
|O'Fallon - 24K quad||st2g6_dem.exe (110 MB)||st2g6_con.exe (74 MB)|
|Saint Charles - 24K quad||st2g4_dem.exe (145 MB)||st2g4_con.exe (68 MB)|
|Winfield - 24K quad||st2h6_dem.exe (229 MB)||st2h6_con.exe (192 MB)|
|Navigation Pool 26||2008_p26_hsf.exe (330 MB)||2008_p26_hsl.exe (201 MB)|
Digital Orthophoto Quadrangles (DOQ)
Digital orthophoto quadrangles (DOQ) are georeferenced images of aerial photographs that have had camera orientation and terrain displacements removed.
These data are being compressed and redistributed through this web site as a service for program partners of the Upper Midwest Environmental Sciences Center. If you require data for areas outside the Mississippi River floodplain, data sets made from photographs from a different year, or the uncompressed files, contact the EROS Data Center.
|Alton - 24K quad||N/A||st2h2sw_doq.exe (2.3 MB)||N/A||st2h2se_doq.exe (2.4 MB)|
|Brussels - 24K quad||N/A||st2h5sw_doq.exe (2.3 MB)||N/A||st2h5se_doq.exe (2.2 MB)|
|Columbia Bottom - 24K quad||st2g2nw_doq.exe (2.4 MB)||st2g2sw_doq.exe (2.4 MB)||st2g2ne_doq.exe (2.4 MB)||st2g2se_doq.exe (2.4 MB)|
|Elsah - 24K quad||st2h3nw_doq.exe (2.3 MB)||st2h3sw_doq.exe (2.3 MB)||st2h3ne_doq.exe (2.4 MB)||st2h3se_doq.exe (2.3 MB)|
|Florissant - 24K quad||st2g3nw_doq.exe (2.5 MB)||N/A||st2g3ne_doq.exe (2.4 MB)||N/A|
|Foley - 24K quad||N/A||N/A||N/A||N/A|
|Grafton - 24K quad||st2h4nw_doq.exe (2.3 MB)||st2h4sw_doq.exe (2.2 MB)||st2h4ne_doq.exe (2.3 MB)||st2h4se_doq.exe (2.2 MB)|
|Kampville - 24K quad||st2g5nw_doq.exe (2.2 MB)||N/A||N/A||N/A|
|Maryknoll - 24K quad||N/A||N/A||st2h7ne_doq.exe (2.4 MB)||st2h7se_doq.exe (2.3 MB)|
|Nutwood - 24K quad||N/A||N/A||N/A||N/A|
|O'Fallon - 24K quad||st2g6nw_doq.exe (2.3 MB)||N/A||st2g6ne_doq.exe (2.3 MB)||st2g6se_doq.exe (2.0 MB)|
|Saint Charles - 24K quad||N/A||N/A||N/A||N/A|
|Winfield - 24K quad||st2h6nw_doq.exe (2.3 MB)||st2h6sw_doq.exe (2.3 MB)||st2h6ne_doq.exe (2.3 MB)||st2h6se_doq.exe (2.3 MB)|
|Navigation Pool 26||doq_p26_z15n83.exe (14.1 MB)|
Digital Raster Graphics (DRG)
Digital raster graphic (DRG) files are scanned and rectified images of USGS quadrangles.
These data are being compressed and redistributed through this web site as a service for program partners of the Upper Midwest Environmental Sciences Center. If you require data for additional areas, the help button access information on which files are available through this Web site, the USGS National Mapping Center in Rolla, Missouri keeps a listing of sites that distribute DRG files through the Internet, and copies of the data can be ordered from the EROS Data Center (for a duplication and distribution fee).
|Jerseyville - 100K quad||qn4_drg1.exe (7.6 MB)||N/A|
|Saint Louis - 100K quad||st2_drg1.exe (9.9 MB)||N/A|
|Alton - 24K quad||N/A||st2h2_drg2.exe (5.6 MB)|
|Brussels - 24K quad||N/A||st2h5_drg2.exe (5.2 MB)|
|Columbia Bottom - 24K quad||N/A||st2g2_drg2.exe (4.8 MB)|
|Elisah - 24K quad||N/A||st2h3_drg2.exe (4.9 MB)|
|Florissant - 24K quad||N/A||st2g3_drg2.exe (6.3 MB)|
|Foley - 24K quad||N/A||qn4a6_drg2.exe (4.3 MB)|
|Grafton - 24K quad||N/A||st2h4_drg2.exe (4.0 MB)|
|Kampville - 24K quad||N/A||st2g5_drg2.exe (4.8 MB)|
|Maryknoll - 24K quad||N/A||st2h7_drg2.exe (2.5 MB)|
|Nutwood - 24K quad||N/A||qn4a5_drg2.exe (4.1 MB)|
|O'Fallon - 24K quad||N/A||st2g6_drg2.exe (4.1 MB)|
|Saint Charles - 24K quad||N/A||st2g4_drg2.exe (3.8 MB)|
|Winfield - 24K quad||N/A||st2h6_drg2.exe (3.9 MB)|
100K Gray Scale
|Navigation Pool 26||drg_p26_clr100k_z15n83.exe (4.9 MB)||drg_p26_bw100k_z15n83.exe (4.8 MB)|
Since 1989 the Upper Midwest Environmental Sciences Center through its association with the Upper Mississippi River Restoration Programs Long Term Resource Monitoring element, has been creating land cover/use and other riverine datasets for the Upper Mississippi River System. For background information on how these data sets were created and are attributed, see the associated metadata in each geodatabase.
Separate Lidar and bathymetry data were collected on the Upper Mississippi River System (UMRS) by the US Army Corps of Engineers (USACE), Upper Mississippi River Restoration (UMRR) program. While many information needs can be met by using these data separately, in many cases seamless elevation data across the river and its floodplain are needed. This seamless elevation surface was generated by merging the Lidar and bathymetry data.
UMRR Pool 26 Topobathy
Since 1989 the Upper Midwest Environmental Center through its association with the Long Term Resource Monitoring Program has been creating land cover/use data sets for the Upper Mississippi River System. For background information on how these data sets were created and are attributed, activate the help buttons. A link to a freeware GIS data viewer that can read the Shape files is also available.- 2010 Land Cover/Use (9 MB z15n83 Shape)
Land/water is one of the classification attributes in the land cover/use data sets created by UMESC from aerial photography. These data are redistributed here as shape files with the boundaries of the region's 1:24,000-scale USGS quadrangles added to the data. This has been done because individuals working with ArcView have reported numerous problems if they attempt to perform a dissolve on the land cover/use data to create a land/water only shape file. Most printers cannot process the detailed land/water boundaries unless some form of a break line or lines are added.- 2000 Land/Water (2.1 MB z15n27 Shape) (2.1 MB z15n83 Shape)
Long Term Resource Monitoring Data
The Long Term Resource Monitoring Program (LTRMP) is a joint program between the U.S. Corps of Engineers, the US Geological Survey, and the states of Illinois, Iowa, Minnesota, Missouri, and Wisconsin. Since 1989 the LTRMP has been collecting monitoring data within 6 study reaches on the Upper Mississippi and Illinois Rivers. LTRMP monitoring data are available for the following topics.
Map Products (UMESC)
- 1890's Map Plates - Georeferenced Images of Maps Produced by the Mississippi River Commission (18.9 MB z15n27 MrSid) (18.9 MB z15n83 MrSid)
River Miles (UMESC and SAST)
The US Army Corps of Engineers use a river mile measuring scheme to locate features on the Mississippi River. Two digital version of these data are available, one created by UMESC from stored on USGS quadrangles, and one created by the SAST project. The SAST data set differs from the UMESC data set in that some of the river mile markers were relocated by UMESC staff so they would fall within the navigation channel.- UMESC River Miles (50 KB UNIX) (80 KB NT) (44 KB Shape)
UMRS Basin- 1993 Levees (359 KB Shape)
Lock and dam 10 to the Ohio River- 1984 Commercial Fisheries (259 KB Shape)
Wing Dams (COE)
The Corps of Engineers constructs and maintains wing dams in the Mississippi River system. Copies of data files provided by the US Army Corps of Engineers - Rock Island District are being redistributed through this web site as a service for program partners of the Upper Midwest Environmental Sciences Center.- Wing Dams - Saint Louis District (84 KB UNIX) (114 KB NT) (61 KB Shape)