Landslide Quads

Metadata also available as

Frequently-anticipated questions:

What does this data set describe?
    Title: Wyoming Landslides
    Abstract:
    **PLEASE NOTE: This is preliminary metadata. Final metadata will be provided with the final project.** This data includes delineations of landslide areas within the United States Geological Survey 7.5 minute Tripod Peak Quadrangle Map at 1:24,000 scale. The source map was produced by the Wyoming State Geological Survey. James C. Case is the project manager. The source map was scanned using the Tangent CCS FB34/D1R Digital Reproduction System supported by a Sun Microsystems Ultra 2 System. This flatbed scanner features an imaging area of 24" by 34" with a resolution of up to 600 d.p.i. The scanner is housed and operated by the American Heritage Center, University of Wyoming, Laramie, (307) 766-6835. The landslide delineations were attributed by Robin D. Gray of the Water Resources Data System, (307) 766-6651. This map is one part of the Wyoming State Geological Survey Landslide Database Project which encompasses 850 such maps.
    Supplemental_Information:
    These maps have been released by the Wyoming State Geological Survey as Preliminary Landslide Maps.

  1. How should this data set be cited?

    Wyoming State Geological Survey and the Water Resources Data System., February, 2001: Preliminary Landslide Map, Wyoming State Geological Survey, Laramie, Wyoming.

    Other_Citation_Details:
    This coverage was developed from Preliminary Landslide Maps, produced by James C. Case, published by the Wyoming State Geological Survey in 1990.
    This is part of the following larger work.

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -111.125
    East_Bounding_Coordinate: -104.000
    North_Bounding_Coordinate: 45.125
    South_Bounding_Coordinate: 40.875
    USGS Quad Name In Error Out Error
    43109a4 Alpine lake 0.003 1.898
    41110e7 Belle Butte 0.003 1.734
    43109c8 Big Sheep Mountain 0.003 2.127
    43110b4 Bondurant 0.003 1.870
    42109g6 Boulder Lake 0.001 0.760
    41110d5 Bridger 0.007 4.105
    43109a6 Bridger lakes 0.001 0.812
    41110a1 Burntfork 0.002 1.089
    42110d3 Cretaceous Mountain 0.000 0.187
    41110e5 Cumberland Gap 0.003 1.566
    42110e3 Deer Hill 0.004 2.373
    42109g1 Dickenson Park 0.002 1.438
    43110b1 Dodge Butte 0.004 2.315
    43110c3 Double Top Peak 0.001 0.750
    41110e6 Elkol SW 0.004 2.717
    41110c8 Evanston 0.003 1.986
    42109h6 Fayette Lake 0.004 2.622
    43109d8 Fish Creek Park 0.002 1.172
    43109a7 Fremont Lake North 0.003 1.635
    42109h7 Fremont Lake South 0.001 0.785
    43109b5 Fremont Peak North 0.001 0.676
    43109a5 Fremont Peak South 0.007 4.456
    41110c4 Ft. Bridger 0.002 1.371
    43109b6 Garrett Peak 0.003 1.962
    43109c7 Green River Lakes 0.004 2.227
    41110c7 Guild Hollow 0.005 3.217
    41110b5 Hague Creek 0.002 1.153
    42110g3 Halfway 0.006 3.500
    42109h4 Halls Mountain 0.004 2.172
    43110a5 Hoback Peak 0.002 1.321
    41109b8 Horse Ranch 0.004 2.699
    42109h5 Horseshoe Lake 0.006 3.374
    43109b8 Kendall Mountain 0.002 1.334
    43110a3 Kismet Peak 0.005 2.977
    43110c1 Klondike Hill 0.003 2.055
    42110c4 Lake Mountain 0.004 2.301
    41110b3 Leavitt Bench 0.003 1.962
    41110c5 Leroy 0.004 2.516
    41110d7 Little Dee Creek 0.007 4.392
    42109g2 Lizard Head Peak 0.005 3.149
    41110a2 Lonetree 0.006 3.493
    42110h5 Look Out Mountain 0.002 1.005
    42110g4 Maki Creek 0.003 2.066
    42110f3 Meadow Canyon 0.006 3.623
    41110d6 Meadow Draw 0.006 3.754
    42110h3 Merna 0.001 0.558
    41110b8 Millis 0.004 2.596
    41110a6 Moslander Reservoir 0.004 2.704
    42109g3 Mount Bonneville 0.002 1.435
    42110f5 Mount Schidler 0.003 2.107
    41110c3 Mountain View 0.003 1.982
    41111c1 Murphy Ridge 0.002 1.168
    41110a8 Myers Reservior 0.003 2.049
    41111d1 Neponset Res. NE 0.002 1.427
    43109a8 New Fork Lakes 0.002 1.191
    43110a4 Noble Basin 0.004 2.257
    42110b7 Nugent Park 0.002 0.961
    42110g2 Onion Springs 0.002 1.238
    43110b2 Pass Peak 0.004 2.300
    41110b6 Piedmont Reservoir 0.005 2.787
    42110d4 Pine Grove Ridge 0.005 2.743
    41110a7 Pine Knoll 0.003 1.881
    42110e6 Poison Meadows 0.004 2.404
    41111a1 Porcupine Ridge 0.006 3.723
    42110h4 Prospect Peak 0.007 4.145
    41110c6 Ragan 0.005 3.050
    43110b3 Rasperry Ridge 0.008 4.953
    42110f4 Red Castle Creek 0.004 2.174
    42110b3 Red Gapp 0.005 2.939
    41110b2 Reed Reservoir 0.003 2.055
    41111f1 Rex Peak 0.003 2.060
    42109h3 Roberts Mountain 0.003 1.963
    41110b4 Robertson 0.005 3.039
    41110h4 Round Mountain 0.002 1.139
    42110d8 Salt Flat 0.006 3.526
    42111f1 Sage Valley 0.005 2.942
    41110e8 Sawtooth Mountain 0.003 2.128
    42109g5 Scab Creek 0.007 4.073
    40110h8 Seven Tree Flat 0.003 1.601
    43110a2 Signal Hill 0.003 1.580
    41110b1 Soap Holes Reservoir 0.003 1.578
    42110a5 South Fork Mountain 0.003 1.819
    41111h1 South Lake 0.003 1.770
    42110e4 Springman Creek 0.005 3.029
    43109b7 Square Toe Mountain 0.004 2.161
    41110h5 Sublet 0.002 1.068
    41110b7 Sulpher Creek Reservoir 0.003 1.814
    42109f1 Sweetwater Gap 0.004 2.658
    41110a3 Table Mountain 0.006 3.532
    42109f2 Temple Creek 0.005 3.198
    42110c3 The Hogs Back 0.005 3.010
    42110a3 The Palisades 0.002 0.946
    41110d8 Three Forks 0.002 1.418
    43110c2 Tosi Peak 0.008 4.601
    42110g5 Triple Peak 0.004 2.149
    41110c2 Turtle Hill 0.004 2.582
    43109d7 Verton Peak 0.001 0.841
    41111b1 Wahsatch 0.006 3.671
    41110f6 Warfield Creek 0.003 1.578
    43110a1 Warren Bridge 0.004 2.716
    42110h2 Webb Draw 0.002 1.195
    42110a6 Wilkenson Creek 0.002 0.963
    41110g4 Willow Springs 0.004 2.159
    41110f8 Windy Point 0.005 3.296
    41111e1 Woodruff Narrows 0.005 3.118
    42110e5 Wyoming Peak 0.003 1.553

  3. What does it look like?

    N/A (N/A)
    N/A

  4. Does the data set describe conditions during a particular time period?

    Calendar_Date: 2002
    Currentness_Reference: publication date

  5. What is the general form of this data set?

    Geospatial_Data_Presentation_Form: vector digital data

  6. How does the data set represent geographic features?

    1. How are geographic features stored in the data set?

      This is a Vector data set.

    2. What coordinate system is used to represent geographic features?

      The map projection used is Transverse Mercator.

      Projection parameters:
      Scale_Factor_at_Central_Meridian: 0.999600
      Longitude_of_Central_Meridian: -111.000000
      False_Easting: 500000.000000
      False_Northing: 0.000000

      Planar coordinates are encoded using coordinate pair
      Abscissae (x-coordinates) are specified to the nearest 0.000032
      Ordinates (y-coordinates) are specified to the nearest 0.000032
      Planar coordinates are specified in meters

      The horizontal datum used is North American Datum of 1927.
      The ellipsoid used is Clarke 1866.
      The semi-major axis of the ellipsoid used is 6378206.400000.
      The flattening of the ellipsoid used is 1/294.978698.

  7. How does the data set describe geographic features?

    name.pat
    Polygon attribute table (Source: None)

    FID

    SHAPE

    AREA

    PERIMETER

    name#

    name-ID

    LS_TYPE
    Landslide type (Source: Wyoming State Geological Survey)

    ISLAND
    A bedrock polygon completely surrounded by landslides (Source: Wyoming State Geological Survey)

    Entity_and_Attribute_Overview:
    LS-TYPE (landslide type) is comprised of one or more of the following, separated by "/":
    Entity_and_Attribute_Detail_Citation: av - avalanche chute (usually associated with debris flows)
    Entity_and_Attribute_Detail_Citation: blsl - block slide (rock or earth)
    Entity_and_Attribute_Detail_Citation: blstrm - block stream
    Entity_and_Attribute_Detail_Citation: bs - bedrock slump
    Entity_and_Attribute_Detail_Citation: bs/ds - bedrock slump/debris slump
    Entity_and_Attribute_Detail_Citation: dav - debris avalanche
    Entity_and_Attribute_Detail_Citation: df - debris flow
    Entity_and_Attribute_Detail_Citation: dlef - debris-laden earth flow
    Entity_and_Attribute_Detail_Citation: ds - debris slump
    Entity_and_Attribute_Detail_Citation: ef - earth flow
    Entity_and_Attribute_Detail_Citation: es - earth slump
    Entity_and_Attribute_Detail_Citation: f - flow (earth or debris-laden earth)
    Entity_and_Attribute_Detail_Citation: frf - flowing rock fragments
    Entity_and_Attribute_Detail_Citation: m - multiple
    Entity_and_Attribute_Detail_Citation: mblsl - multiple block slide (rock or earth)
    Entity_and_Attribute_Detail_Citation: mdf - multiple debris flow
    Entity_and_Attribute_Detail_Citation: mf - multiple flow (earth or debris-laden earth)
    Entity_and_Attribute_Detail_Citation: mrff - multiple rock fragment flow
    Entity_and_Attribute_Detail_Citation: mrs - multiple rock slide
    Entity_and_Attribute_Detail_Citation: ms - multiple slump (bedrock, debris, or earth)
    Entity_and_Attribute_Detail_Citation: rf - rock fall
    Entity_and_Attribute_Detail_Citation: rff - rock fragment flow
    Entity_and_Attribute_Detail_Citation: rg - rock glacier
    Entity_and_Attribute_Detail_Citation: rga - rock glacier--active
    Entity_and_Attribute_Detail_Citation: rgi - rock glacier--inactive
    Entity_and_Attribute_Detail_Citation: rs - rock slide
    Entity_and_Attribute_Detail_Citation: s - slump
    Entity_and_Attribute_Detail_Citation: s/f - slump/flow complex
    Entity_and_Attribute_Detail_Citation: solif - solifluction
    Entity_and_Attribute_Detail_Citation: tf - talus flow

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)

  2. Who also contributed to the data set?

    Wyoming State Geological Survey and the Water Resources Data System

  3. To whom should users address questions about the data?

    James C. Case
    Wyoming State Geological Survey
    Geologic Hazards
    PO Box 3008, Wyoming Geological Survey Building, University of Wyoming
    Laramie, Wyoming 82071
    USA

    (307) 766-2286 (voice)
    (307) 766-2605 (FAX)
    jcase@wsgs.uwyo.edu

    Hours_of_Service: 8:00 AM until 5:00 PM (MST)

Why was the data set created?
To display landslide data for Wyoming counties over the Internet, and to make each Preliminary Landslide Map in the study area available for download over the Internet for the purpose of disaster response, disaster preparedness, and planning.

How was the data set created?
  1. Where did the data come from?

    Preliminary Landslide Map (source 1 of 2)
    James C. Case, Wyoming State Geological Survey: Preliminary Landslide Maps, Wyoming State Geological Survey, Laramie, Wyoming.

    This is part of the following larger work.

    Type_of_Source_Media: paper
    Source_Scale_Denominator: 24,000
    Source_Contribution: Wyoming State Geological Survey

    256 grayshade TIF (source 2 of 2)
    American Heritage Center (University of Wyoming) created the TIF from a drafted mylar of the Wyoming State Geological Survey Preliminary Landslide Map., Unpublished Material, 256 Grayshade TIF: N/A N/A, N/A, N/A.

    Type_of_Source_Media: CD-ROM
    Source_Scale_Denominator: N/A
    Source_Contribution:
    Preliminary Landslide Map was scanned using the Tangent CCS FB34/D1R Digital Reproduction System supported by a Sun Microsystems Ultra 2 System. This flatbed scanner features an imaging area of 24" by 34" with a resolution of up to 600 d.p.i. The scanner is housed and operated by the American Heritage Center, University of Wyoming, Laramie, (307) 766-6835. The mylar was digitized into a 256 grayshade TIF. This file was burned to a CD-ROM for delivery to the Water Resources Data System for attribution.

  2. What changes have been made?

    Date: 2000 (change 1 of 2)
    The Preliminary Landslide Maps, which were originally drafted on paper United States Geological Survey 7.5 minute Quadrangle Maps, were transferred to mylar. The mylar was scanned at a resolution of 300 dots per inch (dpi) and 256 shades of gray (8 bit) using the using the Tangent CCS FB34/D1R Digital Reproduction System supported by a Sun Microsystems Ultra 2 System. (This flatbed scanner features an imaging area of 24" by 34" with a resolution of up to 600 dpi. The scanner is housed and operated by the American Heritage Center, University of Wyoming, Laramie, (307) 766-6835.) The resulting scans were converted to single-bit (black and white) and cleaned in Corel Photo-Paint 8 to remove scanner artifacts, and to enhance tics. The single-bit TIFFs were processed through GTX OSR 4 (a raster to vector conversion program) with a smoothness of 1. This produces a DXF file which was entered into ArcInfo 8 for attribution.

    Person responsible for change:

    Antony R. Bergantino
    Water Resources Data System
    Project Manager
    PO Box 3943, Wyoming Hall, University of Wyoming
    Laramie, Wyoming 82071
    USA

    Water Resources Data System (307) 766-6651 (voice)
    Water Resources Data System (307) 766-3785 (FAX)
    wrds@uwyo.edu

    Hours_of_Service: 8:00 AM - 5:00 PM (MST)
    Contact_Instructions: N/A
    Date: 2002 (change 2 of 2)
    The following process was completed in ArcInfo 8, and summarizes the steps in digitizing the Preliminary Landslide Maps: 1. Export TIFF to DXF; 2. Determine the number of layers; 3. Export DXF to coverage; 4. Rotate coverage; 5. Clean (use default tolerances); 6. Put in tics (digitizing units); 7. Clip the 24quad Lambert coverage to needed quad; 8. Put in tics at nodes (corners) of quad; 9. Create watch file for transformation output; 10. Transform the coverage to real-world coordinates; 11. Edit (unclosed polygons, undershoots, overshoots, slivers, etc.); 12. Build or clean; 13. Clip landslide coverage to quad; 14. Edit again to check for errors; 15. Attribute; 16. Save as landslide cover; 17. For any coverage that has islands create a mask file of just those islands; 18. Reproject final coverage to Universal Transverse Mercator, in meters, North American Datum 1927; and 19. Mapjoin all final coverages.

    Person responsible for change:

    Robin D. Gray
    Water Resources Data System
    Project Coordinator
    PO Box 3943
    Laramie, Wyoming 82071
    USA

    (307) 766-6651 (voice)
    (307) 766-3785 (FAX)
    grayr@uwyo.edu

    Hours_of_Service: 8:00 AM - 5:00 PM (MST)
    Contact_Instructions: N/A

How reliable are the data; what problems remain in the data set?
  1. How well have the observations been checked?

    All attributes have been checked against original, paper Preliminary Landslide Maps. Not all landslides have been field-verified.

  2. How accurate are the geographic locations?

    The Wyoming State Geological Survey Prelminary Landslide Maps were developed from the United States Geological Survey (USGS) 1:24,000-scale quadrangle maps. According to the USGS National Mapping Accuracy Standards, these quadrangle maps have an inherited error of +/- 40 feet. Therefore, accuracy for this dataset is approximately +/- 40 feet. This estimation has not been formally tested. The estimation is based on the National Mapping Accuracy Standars, taking into account the source scale of the aerial photographs, limitations associated with interpreting and transcribing polygons by hand, and scanning hand-drawn polygons on USGS 1:24,000-scale base maps. This coverage was registered using four tics, one at each corner, and an RMS error (input, output) = (0.007, 4.110).

  3. How accurate are the heights or depths?

  4. Where are the gaps in the data? What is missing?

    All polygons are appropriately labeled.

  5. How consistent are the relationships among the observations, including topology?

    The polygon topology has been checked and verified. All polygons are closed. Each polygon has one label. All dangles and slivers were removed.

How can someone get a copy of the data set?
Are there legal restrictions on access or use of the data?

Access_Constraints: None.
Use_Constraints:
These Preliminary Landslide Maps are NOT to be used at a scale larger than 1:24,000. Not all landslides may have been mapped. Not all landslides have been field checked.

  1. Who distributes the data set? (Distributor 1 of 1)

    James C. Case
    Wyoming State Geological Survey
    Geologic Hazards
    PO Box 3008, Wyoming Geological Survey Building, University of Wyoming
    Laramie, Wyoming 82071
    USA

    (307) 766-2286 (voice)
    (307) 766-2605 (FAX)
    jcase@wsgs.uwyo.edu

    Hours_of_Service: 8:00 AM - 5:00 PM (MST)
    Contact_Instructions: N/A
  2. What's the catalog number I need to order this data set?

    Wyoming State Geological Survey Preliminary Landslide Maps

  3. What legal disclaimers am I supposed to read?

    When using the Preliminary Landslide Maps, proper reference should be given to the Wyoming State Geological Survey, James C. Case, Project Manager.

  4. How can I download or order the data?

  5. Is there some other way to get the data?

    Contact James C. Case, Wyoming State Geological Survey, (307) 766-2286

  6. What hardware or software do I need in order to use the data set?

    These Preliminary Landslide Maps are NOT to be used at a scale larger than 1:24,000. Not all landslides may have been mapped. Not all landslides have been field checked.

Who wrote the metadata?
Dates:
Last modified: 2002

Metadata author:
James C. Case and Antony R. Bergantino
Wyoming State Geological Survey and Water Resources Data System
James C. Case, Geologic Hazards; Antony R. Bergantino, Systems Programmer
Wyoming State Geological Survey, PO Box 3008, Wyoming Geological Survey Building, University of Wyoming
Laramie, Wyoming 82071
USA

(307) 766-2286 (James C. Case); (307) 766-6651 (Antony R. Bergantino) (voice)
(307) 766-2605 (Wyoming State Geological Survey); (307) 766-3785 (Water Resources Data System) (FAX)
jcase@wsgs.uwyo.edu; antonius@uwyo.edu

Hours_of_Service: 8:00 AM - 5:00 PM (MST)
Contact_Instructions: N/A
Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)

Metadata extensions used:

Generated by mp version 2.4.38 on Mon Jan 29 07:52:04 2001