Wisconsin Statewide Datasets

Virtually all of these data sets are accessible via WISCLINC, the WDNR GeoServices web site, or the WDOA OLIS web site. They are only a sample of integrated statewide geospatial data layers to be made readily available in the near future.

All themes are referenced to the Wisconsin Transverse Mercator (WTM) projection system, North American Datum 1983 with the 1991 adjustment (NAD83/91). We refer to this system as WTM83(91).

* An asterisk denotes that this theme has included with it a metadata file in HTML format which complies with FGDC Content Standard for Digital Geospatial Metadata (CSDGM).

 

1. TIGER Derived Datasets

* Wisconsin State Outline ("state.shp")
This data layer is a polygon shapefile of the state boundary, derived from the 1992 TIGER Line Files. This data layer is for use in generalized mapping applications. The level of accuracy does not support detailed local analysis.

Wisconsin Regional Planning Commissions ("rpcswi5.shp")
This data layer is a polygon shapefile dissolved from county boundaries. Five counties are not included within any RPC.

* Wisconsin Counties, Single-part Polygons ("cntydiss.shp")
This data layer is a polygon shapefile of the county boundaries in Wisconsin, derived from the 1992 TIGER Line Files. Each county has a single record corresponding to it, irregardless of the number of actual polygons. This data layer is for use in generalized mapping applications. The level of accuracy does not support detailed local analysis.

* Wisconsin 1998 MCDs, Single-part Polygons ("wi_mcd98diss.shp")
This data layer is a polygon shapefile of the 1998 minor civil divisions in Wisconsin, derived from the 1998 TIGER line files. Each MCD has a single record corresponding to it, irregardless of the number of actual polygons. This data layer is for use in generalized mapping applications. The level of accuracy does not support detailed local analysis.

* Wisconsin U.S. Congressional Districts ("congress.shp")
This data layer is a polygon shapefile of the United States Congressional districts in Wisconsin derived from the 1992 TIGER line files. This data layer is for use in generalized mapping applications. The level of accuracy does not support detailed local analysis.

* Wisconsin Senate Districts ("senate.shp")
This data layer is a polygon shapefile of the Senate districts in Wisconsin derived from the 1992 TIGER line files. This data layer is for use in generalized mapping applications. The level of accuracy does not support detailed local analysis.

* Wisconsin Assembly Districts ("assembly.shp")
This data layer is a polygon shapefile of the Assembly districts in Wisconsin derived from the 1992 TIGER line files. This data layer is for use in generalized mapping applications. The level of accuracy does not support detailed local analysis.

 

2. PLSS 24K Landnet Derived Datasets

* PLSS Townships from 24K Landnet ("twppoly.shp")
This data set is a polygon shapefile representing Public Land Survey System (PLSS) townships. The data are a subset of the WiDNR's 'Landnet' database, automated from 1:24,000-scale sources. The features in the 24K Landnet database are presented for cartographic reference only and are not intended to be official or authoritative. Survey by a registered land surveyor is the only legal basis for determining actual land boundaries or locating PLSS corners.

* PLSS Sections from 24K Landnet ("secrdtrs.shp")
This data set is a polygon shapefile representing Public Land Survey System (PLSS) sections. The data are a subset of the WiDNR's 'Landnet' database, automated from 1:24,000-scale sources. The features in the 24K Landnet database are presented for cartographic reference only and are not intended to be official or authoritative. Survey by a registered land surveyor is the only legal basis for determining actual land boundaries or locating PLSS corners.

Fourth Principal Meridian, Baseline, and Standard Parallels ("4thpm_base.shp")
This data set is a line shapefile representing an extract from the PLSS Landnet, useful for cartographic purposes at generalized scales.

Township and Range Labels ("tr.shp")
This data set is a polygon shapefile derived from an annotation layer to accompanythe above. Users should turn off the outline, and label the Township and Range text. A further enhancement in AV is to rotate the labels denoting ranges east andwest of the 4th PM by 90 degrees.

 

3. Transportation Datasets

* State Trunk Highways ("sthlarc.shp")
This data set is a line shape file representing state trunk highways (i.e., major roads) in Wisconsin, derived from a data set developed by the Wisconsin Dept. of Transportation (WisDOT), and called the "1:100,000-scale Roadway Chain" database. Metadata for the Roadway Chain database as developed by WisDOT is reproduced here, (with section names in a green font), together with additional information about minor modifications to the data carried out by WiDNR. This data set contains spatial object chains representing the centerline of Wisconsin State, US and Interstate Roadways and selected supporting state-owned roadways such as ramps, connectors, frontage roads. Its detail and positioning is comparable to 1:100,000. The names of the State, US and Interstate routes are included. This data set was created to support comprehensive state-wide roadway and intermodal system planning, regional system and network planning, regional facilities and roadway project management, regional operations (traffic, snow removal) management and high level corridor analysis at state, regional and large corridor extents. It is used to transform one-dimensional linearly-referenced transportation data (such as crashes, pavement, and physical inventory referenced by Reference Points, Mile Post and Light Post) to a two-dimensional form (x,y or geographic), and vice versa (soils under/along roadway, municipal location, legislative district transformed to linear-reference). Some WisDOT applications that use this data set are Pavement Management, Highway Project Records Management, Highway Planning, Aerial Photo Inventory, Photolog image access and management, Local Bridge Inventory, Pavement Marking Inventory, Safety Analysis, cartographic reference at 1:100,000 scales. From this data set, maps ranging in scale from 1:800,000 to 1:30,000 have been produced with acceptable results, but maps at a scale closer to the compilation scale of 1:100,000 are recommended for most uses. The data may contain historical chains and chains that represent roadways planned in the future. Be sure to check the metadata to determine if the data set you have contains any such chains.

State Trunk Highways Labels ("stlxpoin.shp")
A set of label points derived from an unsplit of STH arcs, then converted to points with the Arclabel command. We symbolize on "basc_ty" to distinguish Interstates, US Highways, and State Trunk Highways. Ths custom legend included for AV users is derived from the transportation symbol palette ($AVHOME/symbols/trans.avp). Since the points are derived from lines of LENGTH, we have derived a rule of thumb for selecting an appropriate subset of points: divide the view/layout scale by 40, select points of LENGTH greater than the result. Hence, for a 1:150,000 map, select for LENGTH > (150000/40), or 3750. Since coverage units are meters, at 1609 meters per mile, this yields all points derived from arcs slightly over 2.33 miles. For best label placement, set view scale to intended layout scale, and label on center with the Rte1b field, one of a possible five aliases reflected in the concurrent roadway field, "cncr_rdwy". If you need better or more complete labels, explore other options, such as customizing your own label points. (For example, the case of the highway 12 / 18 / 151 corridor, or Madison beltline.)

County Highways ("cthlarc.shp")
Derived from USGS 1:100K Digital Line Graphs, and other sources. This is a temporary, cartographically expedient layer, until better public domain data is available from the WDOT Local Roads and Streets Project, or other sources.

County Highways Labels ("crlxpoin.shp")
Derived and used in a manner similar to the state trunk highway labels. The label field is "state_rtc1."

1:100K Roads (line features) ("rdslarc.shp")
The 1:100,000-scale Roads data layer is derived from the 1:100,000-scale Digital Line Graphs (DLGs) of the U.S. Geological Survey (USGS). WiDNR enhancements to the source DLG data include conversion to ARC/INFO format, edgematching of internal DLG files, and restructuring of feature attribute codes. These data are used for display, mapping and analytic purposes where an intermediate-scale representation of roads is needed. The spatial extent this data layer is the state of Wisconsin, plus a buffer around the perimeter extending 10,000 meters beyond the state boundary.

* Wisconsin DOT Railroads ("dot_rail.shp")
This data layer is a line shapefile of the railroads in Wisconsin as of 1998. This data

layer is for use in generalized mapping applications. The level of accuracy does not support detailed local analysis.

* Wisconsin DNR Railroads ("rrdlarc.shp")
This data set is a line shape file representing railroads in Wisconsin, derived from a data set developed by the Wisconsin Dept. of Transportation (WisDOT), and called the "1:100,000-scale Rails Chain Database". Metadata for the Rails Chain Database as developed by WisDOT is reproduced here, (with section names in a green font), together with additional information about minor modifications to the data carried out by WiDNR. The WisDOT Rails Chain Database is an Arc/Info coverage representing the centerline of Wisconsin railroad lines which was compiled from the 100K Digital Line Graph produced by the US Geological Survey and from rail industry track charts and timetables. This data set includes all main track and sidings identified in railroad timetables; does not include abandonments. Some lines extend beyond state borders, however, data outside of Wisconsin is for cartographic purposes only and will not be maintained. This data set was created to support comprehensive state-wide rail and intermodal system planning in the Bureau of Planning, and is a component of the Rail Infrastructure Database System and the Commodity Information Management System. This data set is intended for planning purposes only at 1:100,000 scale. This data set is not designed for use as a primary regulatory tool in permitting and citing decisions, but may be used as a reference source.

 

4. Hydrographic Datasets

* 1:100K Hydrography (Open Water, polygon features) ("hydropen.shp")
The 1:100,000-scale Hydrography (HYDNW91C) data layer is derived from the 1:100,000-scale Digital Line Graphs (DLGs) of the U.S. Geological Survey (USGS). WiDNR enhancements to the source DLG data include conversion to ARC/INFO format, edgematching of internal DLG files, and restructuring of feature attribute These data are used for display, mapping and analytic purposes where an intermediate-scale representation of hydrography is needed. The spatial extent this data layer is the state of Wisconsin, plus a buffer around the perimeter extending 10,000 meters beyond the state boundary.

* 1:100K Hydrography (Open Water, line features) ("hydtopen.shp")
The 1:100,000-scale Hydrography (HYDNW91C) data layer is derived from the 1:100,000-scale Digital Line Graphs (DLGs) of the U.S. Geological Survey (USGS). WiDNR enhancements to the source DLG data include conversion to ARC/INFO format, edgematching of internal DLG files, and restructuring of feature attribute codes. These data are used for display, mapping and analytic purposes where an intermediate-scale representation of hydrography is needed. The spatial extent this data layer is the state of Wisconsin, plus a buffer around the perimeter extending 10,000 meters beyond the state boundary.

* 1:100K Hydrography (Marsh Water, polygon features) ("hydrmars.shp")
The 1:100,000-scale Hydrography (HYDNW91C) data layer is derived from the 1:100,000-scale Digital Line Graphs (DLGs) of the U.S. Geological Survey (USGS). WiDNR enhancements to the source DLG data include conversion to ARC/INFO format, edgematching of internal DLG files, and restructuring of feature attribute codes. These data are used for display, mapping and analytic purposes where an intermediate-scale representation of hydrography is needed. The spatial extent this data layer is the state of Wisconsin, plus a buffer around the perimeter extending 10,000 meters beyond the state boundary.

Western Great Lakes ("great_lakes.shp")
A cartographically expedient layer for generalized cartographic scales.

 

5. USGS Topographic Quadrangle Datasets

All of the following were mathematically generated, and projected to WTM83(91):

One Degree Latitude / Longitude Cells ("idxppoly.shp")

100K USGS Quadrangle Sheet Boundaries ("qdrpoly100k.shp")

24K USGS Quadrangle Sheet Boundaries ("qdrpoly24k.shp")

12K USGS Quadrangle Sheet Boundaries ("qdrpoly12k.shp")

Wisconsin State Atlas Pages ("wsappoly.shp")
This layer was edited from the 12K layer above. It does not include map insets.

 

6. Georeferenced Point Datasets

* Wisconsin Airports ("airports.shp")
The Public-Use Airports database is a point shapefile of aircraft landing facilities in Wisconsin. Additional attribute data is provided upon request. It contains data on the physical and operational characteristics of the landing facility, current usage including enplanements and aircraft operations, congestion levels and usage categories. This data layer is for use in generalized mapping applications. The level of accuracy does not support detailed local analysis.

* Wisconsin Ports ("wi_ports.shp")
This data layer is a point shapefile of water ports within the state of Wisconsin as of 1997. Original data from the US Army Corps of Engineers (USACE) ports database. This is an extract from the National Waterway Network database. This data layer is for use in generalized mapping applications. The level of accuracy does not support detailed local analysis.

* Wisconsin Named Geographic Features ("gnmxpoin.shp")
This data set is derived from the National Geographic Names Database (NGDB), originally published by the US Geological Survey (USGS). This point shapefile includes names and other geographic information for towns and cities, parks, forests, schools, and other places identified on the source 1:24,000- scale USGS topographic map series. Besides place names, point attributes include elevation (if identified on the source maps), county identifiers, and other geographic reference information. This data set can be used to display geographic place names as text or in combination with other data layers to identify the name of geographically referenced data such as the names of parks, minor civil divisions, or lakes.

Note: Users may want to compare the features in the first two point themes with those in the third - which do you use ?

 

7. Georeferenced Imagery

* WISCLAND Land Cover - Level 2 ("wlciw930.tif")
This is a map of the Level 2 WISCLAND Land Cover classification, in compressed tagged image file (TIF) format, derived from the WISCLAND (Wisconsin Initiative for Statewide Cooperation on Landscape Analysis and Data) Land Cover data set (WLCGW930). WISCLAND Land Cover is a raster representation of vegetation/land cover for the state of Wisconsin. The source data were acquired from the nationwide MRLC (Multi-Resolution Land Characteristics Consortium) acquisition of dual-date Landsat Thematic Mapper (TM) data primarily from 1992. For more information, refer to: <URL:http://www.dnr.state.wi.us/org/at/et/geo/data/wlc.htm>

This map of land cover is intended for display using ArcView or other image viewing software. Use of the full WISCLAND Land Cover data set is recommended for users with access to GIS software that supports ARC/INFO Grid format data.

Also included is a shape file to load as a key (wlc_key), generated as a series of boxes from the WTM83(91) origin, with a legend file, which allows AV3x users to manipulate the classnames in the standard legend.

Hillshade of Wisconsin 500m DEM ("hlshd95.tif")
This layer is a lightened TIF, processed from the WDNR 500m DEM using Arcview Spatial Analyst and Adobe Photoshop. It is for illustrative purposes only. Users are encouraged to investigate the availability of other DEMs at 500m, 75m and 30m resolution. A statewide project is underway to identify availability and characteristics of even larger scale DEMs and their derivative products. Land surface elevation data are currently available in the form of Digital Elevation Models (DEMs) -- digital raster data sets produced by the US Geological Survey (USGS) and held by WDNR in Arc/Info Grid format. The DNR has obtained statewide coverage of USGS 1-Degree DEMs derived from 1:250,000-scale map data, and maintains detailed (75m) and generalized (500m) versions of the 1-degree DEM. The more detailed USGS 7.5-Minute DEMs are derived from 1:24,000-scale, 7.5-minute topographic maps, and have a 30-meter pixel cell size, or resolution. These data provide a highly generalized, statewide representation of land surface elevation for mapping purposes. DEMs are also available directly from the USGS. For more information, refer to the USGS 'Digital Elevation Model Data' User's Guide: <http://edcwww.cr.usgs.gov/glis/hyper/guide/usgs_dem>