Janis Ruhser 20250715 Vector Digital Data Set (Polygon) https://doi.org/10.5066/P9X3UT0T The U.S. Army Corps of Engineers' Upper Mississippi River Restoration (UMRR) program, through its Long Term Resource Monitoring (LTRM) element, collected aerial imagery of the systemic Upper Mississippi River System (UMRS) during the summer of 2020. A Land Cover/Land Use (LCU) spatial database was developed based on the 2020 aerial imagery, which adds a fourth systemic-wide database to the existing 1989, 2000, and 2010/11 LCU databases. These data have been used to create a variety of products, one of which is a data set used to classify aquatic areas. The 2020 aquatic areas data sets were created by first generalizing the available land cover/use data into a land/water data set, then reinterpreting the areas classified as water to determine the type of aquatic area. Area coverage for this data set is the Upper Mississippi River between Minneapolis, MN and Cairo, IL, and the Illinois River from its confluence with the Mississippi to Joliet, IL. The Upper Midwest Environmental Sciences Center administers the US Army Corps of Engineers' Upper Mississippi River Restoration (UMRR) Program, Long Term Resource Monitoring (LTRM) element, authorized under the Water Resources Development Act of 1986 (Public Law 99-662). The mission of the UMRR-LTRM is to provide decision-makers with information to maintain the Upper Mississippi River System (UMRS) as a viable large river ecosystem given its multiple-use character. The long-term goals of the program are to understand the system, determine resource trends and impacts, develop management alternatives, manage information, and develop useful products. The creation and distribution of aquatic areas data for the UMRS aids the Center in meeting these goals. Aquatic areas delineations are not to be used for any navigational purposes. 20200825 20200826 ground condition Complete None planned -90.5765 -89.6208 40.6573 39.8782 ISO 19115 Topic Category biota None Main Channel Backwater Impoundment Navigation Channel Shallow Floodplain Alexandria Digital Library Feature Type Thesaurus wetlands USGS Thesaurus water resource management USGS Metadata Identifier USGS:652d8456d34edd15305a93e7 None Illinois River La Grange Pool Common geographic areas Illinois None None U.S. Geological Survey, Midwest Region Janis Ruhser Biologist mailing address

2630 Fanta Reed Road

La Crosse WI 54603 USA 608-781-6381 608-783-6066 jruhser@usgs.gov US Army Corps of Engineers' Upper Mississippi River Restoration Program- Long Term Resource Monitoring element and USGS's Upper Midwest Environmental Sciences Center ArcMap 10.8.1 A check is performed to ensure every polygon has an attribute code and that it is a valid code. All polygon features are checked for topology using ArcMap The aquatic areas covers the full extent of the 2020 UMRS LCU map used as its foundational land/water data source. The horizontal positional accuracy was tested against the base layer landcover/use data. No additional tests were performed. Not applicable. UMESC 20161125 Vector Digital Data Set La Crosse, WI U.S. Geological Survey http://dx.doi.org/10.5066/F7VD6WH8 Digital and/or Hardcopy Resources 20100801 20110831 ground condition Aqa 2010/2011 Source information for the original Main Navigation Channel and Channel Border polygons UMESC 20210328 Vector Digital Data Set La Crosse, WI U.S. Geological Survey https://doi.org/10.5066/P9U46VQP Digital and/or Hardcopy Resources 20200825 20200826 ground condition 2020 LCU Source information used in land/water dissolve. United States Army Corps of Engineers - Army Geospatial Center 20150128 Vector Digital Data Set Alexandria, VA United States Army Corps of Engineers - Army Geospatial Center Inland Electronic Navigational Charts (ienccloud.us) Digital and/or Hardcopy Resources 20150128 publication date IENC IENC data layers were used in the delineation of the Main Navigation Channel and Channel Border polygons Daniel B. Wilcox 199305 publication https://www.sciencebase.gov/catalog/item/53db83eee4b0fba533faf418 Digital and/or Hardcopy 199305 publication date Aquatic classification Classification of aquatic areas The 2020 Land Cover/Land Use dataset was used as the basis for the land/water dissolve. 2020 LCU 20230203 The Main Navigation Channel and Channel Border polygons were copied from the 2010/2011 Aquatic Areas and appended to the land/water dissolve. The rest of the Aquatic Areas were attributed on screen, with polygon boundaries delineated where necessary, according to a generalized version of the classification described here: http://www.umesc.usgs.gov/documents/reports/1993/93t003.pdf Wilcox, D. B. 1993. An aquatic habitat classification system for the Upper Mississippi River System. U.S. Fish and Wildlife Service, Environmental Management Technical Center, Onalaska, Wisconsin. EMTC 93-T003. 9 pp. + Appendix A. No minimum mapping unit was defined for the aquatic areas, with the exception of Contiguous Floodplain Lake (CFL) which shall not be delineated when smaller than 0.04 ha. Aqa 2010/2011 Aquatic classification 20230317 The Main Navigation Channel polygons were initially copied from the 2010/11 dataset. The Main Navigation Channel was then compared with the currently available edition of the United States Army Corps of Engineers - Army Geospatial Center - Inland Electronic Navigation Chart and adjusted to best approximate the current navigation corridor. Day marks, depth contours, hydraulic structures (dykes and revetments) and the recommended track (also known as sailing line) were all utilized in delineating an approximate Main Navigation Channel. This delineation is intended only to denote the most likely corridor of commercial river traffic as one of the types of aquatic areas in this dataset, and not to be used for any navigation purposes. Channel Border polygons were also adjusted to encompass structures and extend to shorelines where applicable. IENC 20230403 Vector G-polygon 573 Universal Transverse Mercator 15 0.9996 -93.0 0.0 500000.0 0.0 coordinate pair 0.6096 0.6096 meters North_American_Datum_1983 GRS_1980 6378137.0 298.257222101 aqa_2020_lag.shp Attribute Table Table containing attribute information associated with the data set. Producer Defined FID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. Shape Feature geometry. ESRI Coordinates defining the features. OBJECTID Internal feature ID Producer Defined 1 597 AQUA_CODE Codes designating Aquatic Area features Producer Defined N Non-aquatic Producer defined CB Channel Border Producer defined IFL Isolated Floodplain Lake Producer defined MNC Main Navigation Channel Producer defined CFL Contiguous Floodplain Lake Producer defined TRC Tributary Channel Producer defined SC Side Channel Producer defined AQUA_DESC Text description of the AQUA_CODE attribute, self-explained in the fields Producer Defined Non-aquatic Non-aquatic Producer defined Channel Border Channel Borders are the areas between the navigation channel and the river bank. Boundaries of channel border areas are the apparent shorelines, the navigation channel buoy line, straight lines across the mouths of secondary and tertiary channels, and the inundated portions of the natural bank line (Wilcox, D. B. 1993). Producer defined Isolated Floodplain Lake Isolated Floodplain Lake areas have no hydraulic connection by surface gravity flow at reference river discharge. For mapping purposes, isolated means having no apparent surface water connection with the rest of the river (Wilcox, D. B. 1993). Producer defined Main Navigation Channel Main Navigation Channel is the designated navigation corridor marked by channel buoys. In reaches where buoys are not used, the centerline of the navigation channel is defined by lights and daymarks on shore that pilots use for navigation. The navigation channel on most of the UMRS is 91.4 m (300 ft) wide in straight reaches and 152.4 m (500 ft) wide in bends. The navigation channels in the upper pools of the UMRS and tributary waterways are narrower. The prescribed width and depth of at least 9 ft (2.6 m) are maintained by the navigation dams and by dredging where necessary. The navigation channel extends through the locks at each lock and dam. The navigation channel is usually in the main channel but in some reaches, it is located in secondary channels (Wilcox, D. B. 1993). Producer defined Contiguous Floodplain Lake Contiguous Floodplain Lake areas are hydraulically connected by surface gravity flow at reference river discharge. For mapping purposes, contiguous means having apparent surface water connection with the rest of the river (Wilcox, D. B. 1993). Producer defined Tributary Channel Tributary Channels are channels of tributary streams and rivers. The landward boundary is the line where the tributary crosses the study area boundary. The lateral boundaries are the apparent shorelines and any inundated natural bank lines. The riverward limit of a tributary channel is a line drawn across the downstream limits of the apparent shoreline or where the inundated natural bank lines of tributary channels merge with the surrounding bottom (Wilcox, D. B. 1993). Producer defined Side Channel Side Channels are large channels that carry less flow than the main channel. Boundaries of secondary channel areas are the apparent shorelines and straight lines across the mouths of upstream and downstream limits of the apparent shorelines where secondary channels connect with other aquatic areas (Wilcox, D. B. 1993). Producer defined LAND_WATER Generalized land cover classification delineating land and water polygons Producer Defined Land Land Producer defined Water Water Producer defined Perimeter Perimeter of polygon Producer Defined 90.2591654669 404974.288923 Meters Area Area of polygon in square meters Producer Defined 477.314468317 218613202.445 Square Meters Acres Area of polygon in acres Producer Defined 0.117946973773 54020.498784 Acres Hectares Area of polygon in hectares Producer Defined 0.0477314468317 21861.3202445 Hectares The entity and attribute information provided here describes the tabular data associated with the data set. Please review the detailed descriptions that are provided (the individual attribute descriptions) for information on the values that appear as fields/table entries of the data set. The entity and attribute information was generated by the individual and/or agency identified as the originator of the data set. Please review the rest of the metadata record for additional details and information. U.S. Geological Survey GS ScienceBase mailing address

Denver Federal Center, Building 810, Mail Stop 302

Denver CO 80225 United States 1-888-275-8747 sciencebase@usgs.gov Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. Vector Digital Data Set (Polygon) https://doi.org/10.5066/P9X3UT0T None. No fees are applicable for obtaining the data set. 20250715 U.S. Geological Survey, Midwest Region Janis Ruhser Biologist mailing address

2630 Fanta Reed Road

La Crosse WI 54603 USA 608-781-6381 608-783-6066 jruhser@usgs.gov FGDC Content Standard for Digital Geospatial Metadata FGDC-STD-001-1998 local time