Digital Map of surficial geology, wetlands, and deepwater habitats, Coeur d'Alene River Valley, Idaho.

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Frequently anticipated questions:

What does this data set describe?

Digital Map of surficial geology, wetlands, and deepwater habitats, Coeur d'Alene River Valley, Idaho.
The surficial geology, wetlands, and deepwater habitats of the Coeur d' Alene River Valley, Idaho were mapped by Arthur A. Bookstrom and Stephen E. Box (1996-1998) onto 1:24,000 scale topographic base maps (stable-base greenline mylars) for input into an Arc/Info geographic information system (GIS).
These GIS datasets were requested by the U.S. Fish and Wildlife Service and were prepared in conjunction with the Coeur d' Alene Tribe as part of a National Resource Damage Assessment (NRDA) being developed by the U.S. Department of the Interior in conjunction with the Environmental Protection Agency and the Department of Justice.
Geologic features are mapped on the river-channel bottom, its marginal meander ridge, and highlands above the floodplain. Wetland features are mapped according to the Wetlands Classification System of the U.S. Fish and Wildlife Service, which includes riverine, palustrine, and lacustrine systems. Modifiers denote predominant vegetation which indicates frequency and duration of inundation, water depth, organic content, and oxidation of sediments. For detailed descriptions of the geologic and wetland systems data model, please call Arthur Bookstrom (509) 368-3119.
  1. How might this data set be cited?
    Bookstrom, Arthur A., Box, Stephen E., Brandt, Theodore R., Jackson, Berne L., Derkey, Pamela D., and Munts, Steven R., 1999, Digital Map of surficial geology, wetlands, and deepwater habitats, Coeur d'Alene River Valley, Idaho.: U.S. Geological Survey Open-File Report 99-548, U.S. Geological Survey, Spokane, WA.

    Online Links:

  2. What geographic area does the data set cover?
    West_Bounding_Coordinate: -116.875
    East_Bounding_Coordinate: -116.25
    North_Bounding_Coordinate: 47.625
    South_Bounding_Coordinate: 47.375
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
    Calendar_Date: 1999
    Publication date
  5. What is the general form of this data set?
    Geospatial_Data_Presentation_Form: map
  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. It contains the following vector data types (SDTS terminology):
      • Point (1769)
      • String (5313)
      • GT-polygon composed of chains (1766)
    2. What coordinate system is used to represent geographic features?
      Grid_Coordinate_System_Name: Idaho State Plane Coordinate System
      SPCS_Zone_Identifier: 3751
      Planar coordinates are encoded using coordinate pair
      Abscissae (x-coordinates) are specified to the nearest not determined
      Ordinates (y-coordinates) are specified to the nearest not determined
      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 6378206.4.
      The flattening of the ellipsoid used is 1/294.98.
  7. How does the data set describe geographic features?
    The Coeur d'Alene GIS includes four geospatial datasets: cdasurf, cdahydro, cdanest, and cdapump. The primary dataset, cdasurf, consists of an arc attribute table, cdasurf.aat, that relates to the cdasurf.con (contact) and cdasurf.bnk (banktype) files; and a polygon attribute table, cdasurf.pat, that relates to the (detailed geologic and wetlands map units), cdasurf.sys (wetland system), cdasurf.cls (wetland class), cdasurf.scl (wetland subclass), cdasurf.fpl(floodplain designation), cdasurf.wtr (water regime), cdasurf.sed (lithology), cdasurf.rdx (oxidation/reduction environment), (pH status), cdasurf.agl (agricultural land) files. The cdahydro dataset consists of an arc attribute table, cdahydro.aat, that relates to the cdahydro.sym (hydrologic features) file. The cdanest dataset consists of an arc attribute table, cdanest.aat (canals and moats surrounding waterfowl nesting mounds), and a polygon attribute table, cdanest.pat (waterfowl nesting mounds). The cdapump dataset consists of a point attribute table, cdapump.pat (surfacewater pumping stations).
    see U.S. Geological Survey Open-File Report 99-548 for a detailed description of the files, items, and attributes.

Who produced the data set?

  1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
    • Arthur A. Bookstrom
    • Stephen E. Box
    • Theodore R. Brandt
    • Berne L. Jackson
    • Pamela D. Derkey
    • Steven R. Munts
  2. Who also contributed to the data set?
    Arthur A. Bookstrom and Stephen E. Box mapped the surficial geology and wetland system units (1996-1998); Berne L. Jackson (Coeur d'Alene Tribe) scanned the original stable-base 1:24,000-scale maps and created and attributed the GIS with preliminary labels and linecodes. Theodore R. Brandt (contractor) created the master Arc/Info registration file and converted the preliminary GIS to Idaho state plane format. He also digitized in new linework, edited the digital files, and built lookup tables with detailed wetland system, geologic, lithologic, and metal contamination information; Pamela D. Derkey (USGS) provided technical assistance with the geologic-wetland systems data model, metadata, digital documentation, and map projections; Steven R. Munts (contractor) assisted with digital editing; Julie Campbell (USFW) reviewed marsh and lacustrine systems for correctness. She also reviewed vegetation classes and subclasses.
  3. To whom should users address questions about the data?
    Arthur A. Bookstrom
    U.S. Geological Survey
    904 W. Riverside Ave., Rm. 202
    Spokane, WA

    1-509-368-3119 (voice)
    1-509-353-0505 (FAX)

Why was the data set created?

The purpose of these GIS datasets is to show how the distribution of floodborne contaminated sediments is related to potential sources of clean and contaminated sediments, and to hydrologic features that determine patterns of erosion, transport, and deposition. Mapped geologic information indicates the configuration and distribution of surficial geomorphic features and sedimentary deposits that result from erosion, transport, and deposition of unconsolidated sediments. Mapped wetland features indicate the configuration and distribution of surficial hydrologic pathways that guide erosion, transport, and deposition. These GIS datasets are intended to aid in process- oriented interpretation of geochemical and biological data being collected as a basis for natural-resource damage assessment and restoration planning.

How was the data set created?

  1. From what previous works were the data drawn?
    Griggs (1973) (source 1 of 3)
    Griggs, A.B., 1973, Geologic map of the Spokane quadrangle, Washington, Idaho, and Montana: U.S. Geological Survey Geologic Investigations Series I-768, U.S. Geological Survey.

    Type_of_Source_Media: paper map
    Source_Scale_Denominator: 250000
    This map served as a basis for bedrock geology in the study area.
    USFS (1983) (source 2 of 3)
    U.S. Forest Service, 1983, USFS color air photos: U.S. Forest Service.

    Job: USDA, F1Z, 611040
    8/18 to 9/15, 1983 - partial coverage of the Medimont, Black Lake, and Harrison 7.5-minute quadrangles
    Type_of_Source_Media: paper photographs
    Source_Scale_Denominator: 13000
    Surficial geology and wetlands units were initially mapped on these photographs.
    USFS (1984) (source 3 of 3)
    U.S. Forest Service, 1984, USFS color air photos: U.S. Forest Service.

    Job: USDA, F1Z, 611040
    7/19 to 7/22, 1984 - partial coverage of the Cataldo, Rose Lake, and Lane 7.5-minute quadrangles.
    Type_of_Source_Media: paper photographs
    Source_Scale_Denominator: 13000
    Surficial geology and wetlands units were initially mapped on these photographs.
  2. How were the data generated, processed, and modified?
    Date: 05-Feb-2008 (process 1 of 1)
    Creation of original metadata record Person who carried out this activity:
    U.S. Geological Survey
    Attn: Pamela Derkey
    database administrator
    904 W. Riverside Ave, Rm. 202
    Spokane, WA

    (509) 368-3114 (voice)
    1-509-368-3199 (FAX)
  3. What similar or related data should the user be aware of?

How reliable are the data; what problems remain in the data set?

  1. How well have the observations been checked?
    Attribute accuracy was verified by manual comparison of the source with hard copy printouts and plots.
  2. How accurate are the geographic locations?
    The horizontal positional accuracy for the digital data in no better than +/- 2 meters based on the digitizing RMS error.
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
    Data is principally from geologic interpretation of color aerial photographs and LANDSAT TM images with field checking by A.A. Booksrom and S.E. Box. Some bedrock geologic information is from Griggs (1973). In general, the minimum mapping unit is approximately 50 square meters.
  5. How consistent are the relationships among the observations, including topology?
    Polygon and chain-node topology present. Segments making up the outer and inner boundaries of a polygon tie end-to-end to completely enclose the area. Line segments are a set of sequentially numbered coordinate pairs. No duplicate features exist nor duplicate points in a data string. Intersecting lines are separated into individual line segments at the point of intersection. Point data are represented by two sets of coordinate pairs, each with the same coordinate values. All nodes are represented by a single coordinate pair which indicates the beginning or end of a line segment.

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?
Access_Constraints: None
This digital database is not meant to be used or displayed at any scale larger than 1:24,000 (e.g., 1:12,000)
Any hardcopies utilizing these data sets shall clearly indicate their source. If the user has modified the data in any way they are obligated to describe the types of modifications they have performed on the hardcopy map. User specifically agrees not to misrepresent these data sets, nor to imply that changes they made were approved by the USGS.
  1. Who distributes the data set? (Distributor 1 of 1)
    U.S. Geological Survey Information Services
    Open-File Reports, Box 25286
    Denver, CO

    1-303-202-4200 (voice)
    1-303-202-4693 (FAX)
  2. What's the catalog number I need to order this data set?
  3. What legal disclaimers am I supposed to read?
    The U.S. Geological Survey (USGS) provides these geographic data "as is." USGS makes no guarantee or warranty concerning the accuracy of information contained in the geographic data. USGS further makes no warranties, either expressed or implied as to any other matter whatsoever, including, without limitation, the condition of the product, or its fitness for any particular purpose. The burden for determining fitness for use lies entirely with the user. Although these data have been processed successfully on computers of the USGS, no warranty, expressed or implied, is made by USGS regarding the use of these data on any other system, nor does the fact of distribution constitute or imply any such warranty.
    In no event shall the USGS have any liability whatsoever for payment of any consequential, incidental, indirect, special, or tort damages of any kind, including, but not limited to, any loss of profits arising out of use of or reliance on the geographic data or arising out of the delivery, installation, operation, or support by USGS.
  4. How can I download or order the data?

Who wrote the metadata?

Last modified: 05-Feb-2016
Last Reviewed: 05-Jul-2000
Metadata author:
Peter N Schweitzer
USGS Midwest Area
Collection manager, USGS Geoscience Data Clearinghouse,
Mail Stop 954
12201 Sunrise Valley Dr
Reston, VA

703-648-6533 (voice)
703-648-6252 (FAX)
Metadata standard:
FGDC Content Standards for Digital Geospatial Metadata (FGDC-STD-001-1998)

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