USGS Home
SOFIA Home

Altitude of the top of the gray limestone aquifer, southern Florida, USGS WRIR 99-4213 figure 14

Metadata also available as - [Outline] - [Parseable text] - [XML]

Frequently-anticipated questions:

What does this data set describe?

Title:
Altitude of the top of the gray limestone aquifer, southern Florida, USGS WRIR 99-4213 figure 14
Abstract:
The top of the gray limestone aquifer is shallowest in Collier and Hendry Counties and slopes to the southeast and east. The altitude of the top of the gray limestone aquifer generally ranges between sea level and 100 ft below sea level in the study area.

The map shows the altitude of the top of the gray limestone aquifer in feet bwelow sea level. The contour interval is 50 feet.

  1. How should this data set be cited?

    Sonenshein, Roy, 2001, Altitude of the top of the gray limestone aquifer, southern Florida, USGS WRIR 99-4213 figure 14:.

    Online Links:

    This is part of the following larger work.

    Reese, Ronald S. Cunningham, Kevin J., 2000, Hydrogeology of the Gray Limestone Aquifer in Southern Florida: USGS Water Resources Investigations Report 99-4213, U.S. Geological Survey, Tallahassee, FL.

    Online Links:

    Other_Citation_Details:
    Prepared in cooperation with the South Florida Water Management District

  2. What geographic area does the data set cover?

    West_Bounding_Coordinate: -81.375647
    East_Bounding_Coordinate: -80.379217
    North_Bounding_Coordinate: 26.548269
    South_Bounding_Coordinate: 25.364769

  3. What does it look like?

    <http://sofia.usgs.gov/exchange/gis/browsegraphics/glime_alttop_arc.gif> (GIF)
    Altitude of the top of the gray limestone aquifer, southern Florida 1998, WRIR 99-4213 figure 14

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

    Beginning_Date: Oct-1995
    Ending_Date: Sep-1999
    Currentness_Reference: ground condition

  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. It contains the following vector data types (SDTS terminology):

      • String (11)
      • Point (6)

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

      Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.000003. Longitudes are given to the nearest 0.000003. Latitude and longitude values are specified in Decimal degrees.

      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 1/294.978698.

      Vertical_Coordinate_System_Definition:
      Altitude_System_Definition:
      Altitude_Datum_Name: National Geodetic Vertical Datum of 1929
      Altitude_Resolution: 1.000000
      Altitude_Distance_Units: feet
      Altitude_Encoding_Method:
      Explicit elevation coordinate included with horizontal coordinates

  7. How does the data set describe geographic features?

    contour
    Altitude of the top of the gray limestone aquifer, southern Florida (Source: USGS)

    FNODE_

    TNODE_

    LPOLY_

    FID
    Internal feature number. (Source: ESRI)

    Sequential unique whole numbers that are automatically generated.

    LENGTH

    RPOLY_

    ALTITUDE
    altitude of the top of the gray limestone aquifer in feet below sea level, NGVD29 (Source: USGS)

    Range of values
    Minimum:-150
    Maximum:0

    Shape
    Feature geometry. (Source: ESRI)

    Coordinates defining the features.

    SHAPE
    Feature geometry. (Source: ESRI)

    Coordinates defining the features.

    LINETYPE
    Dashed lines are approximately located, solid lines are inferred from data (Source: USGS)

    linetype

    GLIME_ALTT

    GLIME_AL_1

    SHAPE_Leng

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?

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

    Roy Sonenshein
    U.S. Geological Survey
    3110 SW 9th Avenue
    Ft. Lauderdale, FL 33315
    USA

    954 377-5924 (voice)
    sunshine@usgs.gov

Why was the data set created?

The purpose of this report is to evaluate the hydrogeologic framework, hydraulic properties, and ground-water flow of the gray limestone aquifer in southern Florida. The report also emphasizes the geologic framework (stratigraphy and structure) and the hydrogeologic framework (aquifers and confining and semiconfining units) above and below the gray limestone aquifer.

How was the data set created?

  1. From what previous works were the data drawn?

  2. How were the data generated, processed, and modified?

    Date: 14-Dec-2001 (process 1 of 1)
    Original figures created for the publication in Corel Draw were exported into DXF format. Using the conversion wizard DXF to coverage, contour and point layers were selected for output. In Arcedit, using the ADDTICS command, tics were deleted and then added in five locations where well points of known coordinates existed. The create command was used to create a new coverage by copying the TIC and BND files from the existing coverage. This coverage's TIC file was updated in INFO with real world coordinates derived from the report. The TRANSFORM command converted the coverage from digitizer units to real-world coordinates. The final coverage was projected using the projection wizard, topology was built with BUILD, and table attributes were added using ArcMap editor.

    Person who carried out this activity:

    Roy Sonenshein
    U.S. Geological Survey
    3110 SW 9th Avenue
    Ft. Lauderdale, FL 33315
    USA

    954 377-5924 (voice)
    sunshine@usgs.gov

  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?

  2. How accurate are the geographic locations?

    unknown

  3. How accurate are the heights or depths?

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

    This data set contains data for southern Florida

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

    The data set was checked for topological consistency using the Arc/INFO command BUILD and CLEAN. No other checks for logical consistency were performed on this data set.

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: None

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

    Heather S.Henkel
    U.S. Geological Survey
    600 Fourth St. South
    St. Petersburg, FL 33701
    USA

    727 803-8747 ext 3028 (voice)
    727 803-2030 (FAX)
    hhenkel@usgs.gov

  2. What's the catalog number I need to order this data set?

    glime_alttop_arc

  3. What legal disclaimers am I supposed to read?

    Although these data have been processed successfully on a computer system at the U.S. Geological Survey, no warranty expressed or implied is made by the U.S. Geological Survey regarding the utility of the data on any other system, nor shall the act of distribution constitute any such warranty. No responsibility is assumed by the U.S. Geological Survey in the use of these data. These data are not constituted legal documents and are not intended to be used as such.

  4. How can I download or order the data?

Who wrote the metadata?

Dates:
Last modified: 11-Jul-2006
Metadata author:
Heather Henkel
U.S. Geological Survey
600 Fourth Street South
St. Petersburg, Fl 33701
USA

727 803-8747 ext 3028 (voice)
727 803-2030 (FAX)
sofia-metadata@usgs.gov

Metadata standard:
Content Standardfor Digital Geospatial Metadata (FGDC-STD-001-1998)
Metadata extensions used:

Generated by mp version 2.8.14 on Tue Apr 17 12:01:24 2007