Teton County Wyoming
GIS Data Overview
This "Data Overview" is written primarily for the Teton County staff, and secondarily for the public. Not all of the data discussed in this page is distributed to the public from the Teton County website. Public distribution of the data is divided into three categories:
Property lines and ownership information are on the Ownership layer in MapInfo (the Lots & Parcels Lines layer in the web browser based GIS). The majority of the data comes from the Assessor's Tax Roll.
Most of the property on the Ownership layer is represented as polygons, however, condominiums, some townhomes, and additional addresses are shown with point symbols: either circles or squares.
Circles represent approximate locations –
Squares represent accurate locations -
Historical data is located in the retired layer. This layer shows previous parcel configuration, ownership information, responsible deed, and the date it was changed. This layer is not exhaustive and in some instances only depicts the previous parcel configuration. This layer is not currently available for public download but will be provided on email request to email@example.com
Address points are located in the address layer under Text and Labels layer group. This layer is used for labeling street numbers in MapInfo and on the public mapserver. The attributes on these points are updated nightly.
Under the ownership layer group is a layer call subdivisionlink. When a parcel in a subdivision is clicked with the lightning bolt in MapInfo it will link to the digital plat. This layer is also used for labeling purposes in MapInfo and the public MapServer.
The lines shown in the easement table are primarily road easements. Levee easements and pathway easement are shown as well, however, utility easements are NOT shown.
Shown on three different layers:
PLS - this is the most detailed layer; it shows section lines, quarter section lines, some 1/16th section lines, GLO lot lines, HES lines, and meander lines. This layer also has relevant annotations.
roadcl_segmented - road network that has roads segmented at all intersections. It contains from and to address ranges, this layer was generated for 911 purposes.
Road_cl gets generated from roadcl_segmented layer every night. Road_cl is the layer used in all county workspaces.
Both roadcl_segmented and road_cl are distributed to the public
CM: County maintained
CO: County road
JA: Town of Jackson road
FS: Forest Sercice road
ID: Idaho road
MT: Montana road
US: US Highway
WY: Wyoming Highway
NP: National Park road
1: US or WY Highways
2: County roads
3: Town of Jackson roads
4: other roads
County\ or ToJ\
Under the Zoning layer group are the following layers
To view these layers turn them on in the layer control “Zoning” group. Once turned on the legend will also populate with the styles.
CompPlan_2012 is the current Jackson/Teton County Comprehensive plan adopted May 8, 2012. Please refer to the Teton County Planning department website for further details about this layer:
CompPlan_2012 can be classified by Subarea Class or District Name.
The zoning layers were developed during the 2012 comprehensive planning process. Please refer to the County or Town planning Departments for more details about this layer.
Six organizations in Teton County hold conservation easements:
These layers are in the “Conservation Easements” layer group. Once turned on the legend will also populate with the styles. These layers are publicly distributed from the Teton County website.
All of the aerial photography is in the Aerial_Photos folder and sub-folders, which are named by year. Teton County aerial photography covering most of the privately owned land from Hoback Junction to Moose, Alta, and Buffalo Valley has been done in 1999, 2001, 2003, 2005, 2007, 2009, 2011, and 2013. Each pixel in the images represents approximately one square foot on the ground.
Black and White aerial photography of the Town of Jackson was produced in 1998, and color photography in 2003, 2005, 2007, 2009, and 2011 . Except for the 2011 imagery, the Town of Jackson imagery is at a ½ foot / pixel resolution (each pixel represents approximately ½ square foot on the ground. The 2011 imagery is at a ¼ foot / pixel resolution (each pixel represents approximately ¼ square foot on the ground.
The aerial photography layers are a part of the Ownership10 and Planner2012 MapInfo workspaces, and the web browser based GIS.
Teton County charges a $1,000 licensing fee to individuals who wish to license this data. The data is distributed on CD and is available from the Teton County Clerk's Office (307-733-4430).
Historic aerial photography covering parts of Teton County for years 1945, 1967, 1977, 1978, 1983, 1989, 1994 is also in the Aerial_Photos folder and is also available at no cost through the Teton Conservation District web site at www.tetonconservation.org
A 2001 county-wide infrared ortho-image produced by the National Agriculture Imagery Program (NAIP) is in the 2001_CIR folder. It is at a 1 meter / pixel resolution.
True color 2002 ortho-imagery of Grand Teton National Park at a 1 meter / pixel resolution is in the 2002_GrandTeton folder.
The traffic zones were used to do WYDOT traffic modeling for the 2000 Transportation Plan. They are not relevant to the current Integrated Transportation Plan. The TrafficZone table is not currently on the County GIS data distribution page, nor is it in any of the workspaces. If you need this layer you will need to open it manually. You may request a copy by email: firstname.lastname@example.org
Scanned USGS quads are called Digital Raster Graphics (DRG). They are not opened as a part of the standard workspaces, but may be added to any map window. They reside in the DRG folder. You may wish to start by opening the Index table in the DRG folder to pick the DRG that covers the area you are interested in.
The DRG folder also has a sub-folder named "Seamless" which has DRGs that have had their collar trimmed off and have been spliced together to form a single seamless table. The seamless table is called "All_TC_Quads". This layer is easier to use, provided that you do not need any of the collar information.
A good source for DRGs is the US Department of Agriculture Geospatial Data Gateway https://gdg.sc.egov.usda.gov/
There are various ways in which topography and elevation are represented in a GIS. All of Teton County's 3-D data is in the "DEM" folder. Below are two of the DEMs of Jackson Hole - East and West Gros Ventre Buttes are in the middle.
Below the DEM folder is the "5_ft_contours" folder, which has elevation contours at 5 foot intervals for the area covered by the 1999 photogrammetry. The contour coverage is split into five regions: 39N, 40N, 41N, 42N, and Alta, which generally follow the townships. These contours are distributed to the public as a part of the photogrammetric product.
The contours have two attributes: "Elev", and "Type".
Elev is the orthometric height in feet, on the North American Vertical Datum of 1929 (NAVD29), which is a fancy way of saying "elevation".
The Type attribute is a three character field.
1 foot contours of the Town of Jackson (1998) and the commercial area of Teton Village (2001) are in the "1_ft_contours" folder. These contours only have elevation in feet associated with the data.
Under the DEM folder is the "Slopes" folder, which contains slope analysis. There are two categories of slope analysis:
0% - 10%
10% - 15%
15% - 30%
2. Over / Under 25%, which is the relevant criteria for the current comprehensive plan.
Also under the DEM folder is the "VM" folder, which contains the Vertical Mapper grid files. Vertical Mapper is a MapInfo add-on, and is the program used to process 3-D data in MapInfo. Vertical Mapper provides tools for viewshed analysis and image draping, among other things. You have to have Vertical Mapper installed on your computer in order to work with this data
There are three hydrographic tables "Water24k", "Water", and “Water250k” which show lakes, rivers, and creeks at various scales.
Water24k – derived from the Cogan vegetation work where available and from USGS 1:24,000 scale mapping
Water - derived from USGS 2014 NHD 1:100,000 scale mapping
Water250k – derived from USGS 2014 NHD 1:250,000 scale mapping
The three images below show the same area (the confluence of the Gros Ventre River with the Snake River) and illustrate the difference in detail between the three map scales.
Water24k.tab Water.tab Water250k.tab
All the tables have one attribute data field: the name of the water feature if available.
These are labeled from county/hydro/hydro24k, hydro100k, hyrdo250k tab files, which are the based on the same data however they represent just lines and therefore labels more consistently in MapInfo and Mapserver.
(NWI) data was developed by United States Fish and Wildlife Service from aerial photography. The data has very limited ground-truthing and is not a substitute for a wetland delineation. More information and public data download is available at or the local Natural Resource Conservation Service office.
NWI data near Crescent-H, overlaid on a USGS quadrangle.
There are three different folders (sources) for wildlife data on the server under County\Wildlife\
Wildlife data that is in the "County\Wildlife\Biota_1990's_data" folder. was originally developed by BIOTA Research and Consulting in 1990 under a Teton County contract and provided as a set of acetate overlays over 1:24,000 scale USGS quads. The University of Wyoming digitized the maps in 1997. The following are from the University of Wyoming digitizing team. There are other versions and updates of this data, however, Teton County does not have these in a digital format at this time.
Wildlife that is under County\Wildlife\Teton Regional Land Trust Data is in one of two folder depending on whether it's in Idaho or Wyoming. This data was derived from IDFG and wildlife biologists at TRLT.
Wildlife that is under County\Wildlife\WGF Layers is data from the Wyoming Game and Fish Department. While we try to keep this data current, you can check for updates here: http://wgfd.wyo.gov/web2011/wildlife-1000811.aspx
The land cover layer (primarily vegetation) was developed by the Wyoming Gap Analysis Project. Derived from classified Landsat satellite imagery and field verification. The data was developed at a scale of 1:100,000, so it is fairly course compared to other Teton County data. Care should therefore be exercised when overlaying it with other, more accurate, layers. Additional metadata: LandCover.htm
The vegetation layer was created by Cogan Technology for all private and BLM lands using a combination of image processing and photo interpretation of the vegetation communities using 2011-2012 aerial imagery. The data was developed at a scale of 1:12,000. Additional metadata: Vegetation.xml
Generalized Bedrock geologic data is in the "County\Geology\GeneralizedGeology" workspace. The data was developed in conjunction with the Wyoming Water Development Commission Level I Master Plan, described below.
Please see FEMA.xl for details about this layer.
Fire: Urban / Wildfire Interface fire evacuation areas are in the "County\Fire" folder. The data is in a single table named "Fire_Evacuation_Areas.tab" and there is also a workspace named "FireEvacuation.wor"
Jackson Lake Dam Failure Inundation Areas: The Bureau of Reclamation modeled the areas that would be inundated by flood in the event of a failure of the Jackson Lake dam. The folder "County\Bureau_Reclamation" contains both a workspace, and a table which can be added to other workspaces, that shows the inundated area that was taken from the August 1980 U.S. Bureau of Reclamation Jackson Lake Dam inundation maps. Drawing numbers 17-100-451 thru 17-100-456. Note that "The inundated area shown on this map reflect events of an extremely remote nature. These results are not intended to reflect upon the integrity of Jackson Lake Dam."
The "County\WWDC" folder, and sub folders, contain complete data from the Wyoming Water Development Commission, Level -I, Teton County Master Plan prepared in 1998 by Jorgensen Engineering, et al. Please refer to the Read Me.doc Microsoft Word file in the County\WWDC folder, which gives a detailed overview of the contents of this folder. The data within this folder is not limited to GIS data. The folder is structured as follows:
The GIS folder includes 17 MapInfo workspaces that correspond to figures in the final report. Much of the GIS data is available elsewhere on this site; however, the Depth to Groundwater and Aquifer Sensitivity workspaces and associated data exist only in this folder.
County\Infrastructure contains three MapInfo tables from the WWDC Master Plan described above.
Pipes, wells, tanks, and associated distribution system components of the public water systems.
Public Water System Districts.
Voting precincts and polling places are in the County\Precinct folder.
This data is generated by the Department of Revenue and maintained by the Assessors office. Using the public mapserver info tool with the special districts layer turned on you can generate a list of owners for that particular special district.
An aggregation of past environmental assessment GIS data where available.
For use by dispatch
For use by emergency management