2' contours derived from 2017 Lidar

Tax parcel and ownership data

Polyline feature class representing major snowmobile trails in Dodge County, WI. Trail routes were obtained on paper from individual clubs, then digitzed by Land Resources & Parks staff using 2017 orthophotography for reference.

2' contours derived from 2017 Lidar

2' contours derived from 2017 Lidar

2' contours derived from 2017 Lidar

2' contours derived from 2017 Lidar

Contour basemap for the Omaha metropolitan area that includes Douglas & Sarpy Counties & surrounding portions of Dodge & Washington counties. Data was generated from the 2016 QL2 LiDAR project.Deliverables from the project can be downloaded from the project site:https://sarpy.maps.arcgis.com/apps/webappviewer/index.html?id=fd49c0b1d6414828b4034187ff63c6fe

Polygon derived from the 860' elevation contour around Horicon Marsh

2' contours derived from 2017 Lidar

The geologic map, cross sections, figures, and stratigraphic column on this plate depict the type, distribution, and structure of the Mesozoic and Paleozoic bedrock units in Dodge County that are either exposed at the land surface or lie directly beneath unconsolidated Quaternary glacial sediments of variable thickness. The map shows how the bedrock surface would appear if it was viewed from an aerial perspective and the overlying Quaternary sediments were stripped away. The bedrock units near the land surface in Dodge County consist of sedimentary rocks of Mesozoic and Paleozoic age that form distinguishable and mappable layers designated as formations. These formations are commonly exposed along river cuts in the northeastern corner of the county, and within a small number of active and abandoned rock quarries. The accompanying bedrock geologic cross sections add the dimension of depth and illustrate the stratigraphic, structural, and topographic relationships of the bedrock formations and the variable thickness of the overlying Quaternary glacial sediments. The stratigraphic top of the Decorah Shale and St. Peter Sandstone are also provided as supplemental GIS line data, and were used to infer the location of faults and folds. Bedrock surface digital elevation models for each formation are also provided as supplemental GIS data.

A County Geologic Atlas (CGA) project is a study of a county's geology, and its mineral and ground-water resources. The information collected during the project is used to develop maps, data-base files, and reports. This same information is also produced as digital files. The map information is formatted as geographic information system (GIS) files with associated data bases. The maps and reports are also reproduced as portable document files (PDFs) that can be opened on virtually any computer using the free Acrobat Reader from Adobe.com. All of the digital files for the CGA's can be downloaded from the University of Minnesota Digital Conservancy. The majority of the files can also be viewed and queried through the use of this Story Map.Atlas information is commonly used in planning and environmental protection programs, as an educational resource, and by industries involved in water and mineral resources. It represents a comprehensive, detailed compilation of geologic data and interpretations within a county. The distribution and character of geologic materials determine how and where water enters the earth, and where it is stored in aquifers that can supply our needs. Geologic maps are a key element in delineating those flow paths and in relating land use to water quality. The atlas also provides a framework and terminology to support more detailed, site-specific studies. The records of water wells drilled in the area are an important source of data for constructing the maps and for understanding the distribution and use of ground water in the county. A data base of the information from those wells is one of the atlas products, and it can be queried with the GIS files to yield valuable insights for managing the ground-water resource.The atlas is also useful to non-professionals who simply wish to learn more about the geology of the county. It is a one-stop, comprehensive collection of information in a variety of forms and styles that should be useful to anyone with an interest in earth science or the county.The geologic data and maps are produced and distributed by the Minnesota Geological Survey (MGS) as Part A of an Atlas. The Minnesota Department of Natural Resources follows with an investigation of the quantity, quality, and pollution sensitivity of ground water. Their products are distributed as Part B of the atlas, at a later date. If necessary, a report with additional information that was not possible to include on the limited space of the printed maps is produced by MGS as Part C of, or included as a supplement to, an atlas. The Atlas CD or DVD, which is available online at the Digital Conservancy, includes all the atlas products developed by the Minnesota Geological Survey.

The geologic map, cross sections, figures, and stratigraphic column on this plate depict the type, distribution, and structure of the Mesozoic and Paleozoic bedrock units in Dodge County that are either exposed at the land surface or lie directly beneath unconsolidated Quaternary glacial sediments of variable thickness. The map shows how the bedrock surface would appear if it was viewed from an aerial perspective and the overlying Quaternary sediments were stripped away. The bedrock units near the land surface in Dodge County consist of sedimentary rocks of Mesozoic and Paleozoic age that form distinguishable and mappable layers designated as formations. These formations are commonly exposed along river cuts in the northeastern corner of the county, and within a small number of active and abandoned rock quarries. The accompanying bedrock geologic cross sections add the dimension of depth and illustrate the stratigraphic, structural, and topographic relationships of the bedrock formations and the variable thickness of the overlying Quaternary glacial sediments. The stratigraphic top of the Decorah Shale and St. Peter Sandstone are also provided as supplemental GIS line data, and were used to infer the location of faults and folds. Bedrock surface digital elevation models for each formation are also provided as supplemental GIS data.

This map illustrates the interpreted distribution of surface sediment, provides descriptions of surface sediment, and describes the processes which formed the modern landscape of Dodge County.