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High Resolution Bathymetric Mapping

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Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator:
Mark Hansen

Gary W. Hill; Nancy T. DeWitt

Publication_Date: 2002
Title: High Resolution Bathymetric Mapping
Geospatial_Data_Presentation_Form: project, maps and data
Online_Linkage:
<https://sofia.usgs.gov/projects/index.php?project_url=hires_bathy_lakeo>
Description:
Abstract:
The water levels in Lake Okeechobee were at record low levels in the summer of 2001 making hydrographic surveying ideal in that less area must be covered by boat to fully map the lake floor. This condition also allowed the upper elevations of the lake, which were now exposed, to be mapped by traditional survey techniques or airborne topographic LIDAR technology. Conversely, due to the very flat slope of the lake floor, much of the lakebed was less than 0.6m (2') deep making surveying by any method very difficult at best.
Purpose:
High resolution, acoustic bathymetric surveying is a proven method to map sea and lake floor elevations. Of primary interest to the South Florida Water Management District (SFWMD) is the quantification of the present day lakebed in Lake Okeechobee. This information can be used by water management decision-makers to better assess the water capacity of the lake at various levels.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 200109
Currentness_Reference: ground condition
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -81.125
East_Bounding_Coordinate: -80.5
North_Bounding_Coordinate: 27.25
South_Bounding_Coordinate: 26.625
Keywords:
Theme:
Theme_Keyword_Thesaurus: none
Theme_Keyword: bathymetry
Theme_Keyword: mapping
Theme_Keyword: geography
Theme_Keyword: hydrogeology
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: environment
Theme_Keyword: geoscientificInformation
Theme_Keyword: imageryBaseMapsEarthCover
Theme_Keyword: inlandWaters
Theme_Keyword: 007
Theme_Keyword: 008
Theme_Keyword: 010
Theme_Keyword: 012
Place:
Place_Keyword_Thesaurus:
Department of Commerce, 1995, Countries, Dependencies, Areas of Special Sovereignty, and Their Principal Administrative Divisions, Federal Information Processing Standard (FIPS) 10-4, Washington, DC, National Institute of Standards and Technology
Place_Keyword: United States
Place_Keyword: US
Place:
Place_Keyword_Thesaurus:
U.S. Department of Commerce, 1987, Codes for the identification of the States, the District of Columbia and the outlying areas of the United States, and associated areas (Federal Information Processing Standard 5-2): Washington, DC, NIST
Place_Keyword: Florida
Place_Keyword: FL
Place:
Place_Keyword_Thesaurus:
Department of Commerce, 1990, Counties and Equivalent Entities of the United States, Its Possessions, and Associated Areas, FIPS 6-3, Washington, DC, National Institute of Standards and Technology
Place_Keyword: Martin County
Place_Keyword: Palm Beach County
Place_Keyword: Glades County
Place_Keyword: Hendry County
Place_Keyword: Okeechobee County
Place:
Place_Keyword_Thesaurus: USGS Geographic Names Information System
Place_Keyword: Lake Okeechobee
Place:
Place_Keyword_Thesaurus: none
Place_Keyword: Greater Lake Okeechobee
Access_Constraints: none
Use_Constraints: none
Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Mark Hansen
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing and physical address
Address: 600 Fourth Street South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: USA
Contact_Voice_Telephone: 727 803-8747 x 3036
Contact_Facsimile_Telephone: 727 803-2030
Contact_Electronic_Mail_Address: mhansen@usgs.gov
Browse_Graphic:
Browse_Graphic_File_Name:
<https://sofia.usgs.gov/publications/maps/lakeokeebathy/index.html>
Browse_Graphic_File_Description: satellite image showing Lake Okeechobee bathymetric contours
Browse_Graphic_File_Type: JPEG
Data_Set_Credit:
The South Florida Water Management District (SFWMD) provided partial funding for this project
Native_Data_Set_Environment: text files, JPEG and PDF map files
Cross_Reference:
Citation_Information:
Originator:
Hill, Gary W.

DeWitt, Nancy T; Hansen, Mark

Publication_Date: 2001
Title: Elevation Contours of Lake Okeechobee
Geospatial_Data_Presentation_Form: map
Publication_Information:
Publication_Place: St. Petersburg, FL
Publisher: U.S. Geological Survey
Other_Citation_Details: accessed as of 12/28/2010
Online_Linkage: <https://sofia.usgs.gov/publications/maps/lakeokeebathy/>

Data_Quality_Information:
Logical_Consistency_Report: unavailable
Completeness_Report: unknown
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Boat position measured using precise differential GPS receivers. Horizontal accuracy is +/- 4 cm (1.6in)
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
Dynamic elevation measured using precise differential GPS receivers. Vertical accuracy is +/- 8 cm (3 in).
Lineage:
Process_Step:
Process_Description:
The USGS:

1. Provided equipment and personnel as necessary to conduct high resolution bathymetric surveying for a minimum of 1550 kilometers.

The USGS has developed a hydrographic survey system specifically designed to map in very shallow water. A survey quality 200 kHz depth sounder was used to acquire water depth measurements and a motion sensor measured heave, pitch, and roll of the boat. A measurement was collected every second or about every 3 m (10 ft) along a survey line. To achieve horizontal accuracy of +/- 4 cm (1.6 in) and vertical accuracy of +/- 8cm (3 in), the boat could not be operated more than 20 km from any one GPS base station. It was anticipated that two GPS base stations would be used. Several new survey benchmarks were established around the lake perimeter for GPS base station occupation.

Survey track line spacing was 1000 m apart oriented in a north-south direction. A perimeter survey line and several east-west lines were collected also. In addition random crossing lines were collected daily. Crossing lines were used to crosscheck and verify the survey. Soundings were collected along each track line at 3 m (10 ft) spacing. A minimum of 1550 kilometers of survey line were collected. In shallow areas, data were collected in a minimum of 2 feet water depth except where there was potential damage to the bottom environment or the boat/motors.

2. Provided post processing of the benchmark and hydrographic data.

3. Stored and maintained all data and provide access to this data for reproduction as needed by the SFWMD.

4. Provided a final data package that included the following: a. Hard copy plot of locations of surveyed tracklines. b. Digital ASCII XYZ data in UTM Zone 17, GRS80/NAD83 horizontal coordinates, and NAVD88 vertical coordinates in tabular format. c. Copies of raw and processed digital data files on CD-ROM

Process_Date: 2002
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Mark Hansen
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing and physical address
Address: 600 Fourth Street South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: USA
Contact_Voice_Telephone: 727 803-8747 x 3036
Contact_Facsimile_Telephone: 727 803-2030
Contact_Electronic_Mail_Address: mhansen@usgs.gov

Spatial_Data_Organization_Information:
Indirect_Spatial_Reference: Lake Okeechobee

Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 0.00000001
Longitude_Resolution: 0.00000001
Geographic_Coordinate_Units: Decimal degrees
Geodetic_Model:
Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137
Denominator_of_Flattening_Ratio: 298.257
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Altitude_Datum_Name: North American Vertical Datum of 1988
Altitude_Resolution: 1.0, 0.5
Altitude_Distance_Units: feet, meters
Altitude_Encoding_Method:
Explicit elevation coordinate included with horizontal coordinates

Entity_and_Attribute_Information:
Overview_Description:
Entity_and_Attribute_Overview:
Data in the "raw data" files are in the following format:

Col 1 Longitude Col 2 Latitude Col 3 X State Plane (ft) Florida East Zone Col 4 Y State Plane (ft) Florida East Zone Col 5 VERTCON corrections factor (m) Col 6 Elevation (m) - NAVD88 Col 7 Elevation (ft) - NAVD88 Col 8 Elevation (m) - NGVD29 Col 9 Elevation (ft) - NGVD29

Entity_and_Attribute_Detail_Citation: USGS personnel

Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Heather S. Henkel
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing address
Address: 600 Fourth St. South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: USA
Contact_Voice_Telephone: 727 803-8747 ext 3028
Contact_Facsimile_Telephone: 727 803-2030
Contact_Electronic_Mail_Address: hhenkel@usgs.gov
Resource_Description: raw data file (ptokeemft.xyz)
Distribution_Liability: The data have no explicit or implied guarantees.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ASCII text
Transfer_Size: 60
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: <https://sofia.usgs.gov/exchanget/hansen_lakeokee/ptokeemft.xyz>
Access_Instructions: Data may be downloaded from the SOFIA website
Fees: none

Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Heather S. Henkel
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing address
Address: 600 Fourth St. South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: USA
Contact_Voice_Telephone: 727 803-8747 ext 3028
Contact_Facsimile_Telephone: 727 803-2030
Contact_Electronic_Mail_Address: hhenkel@usgs.gov
Resource_Description: Elevation Contours of Lake Okeechobee 2001
Distribution_Liability: The data have no explicit or implied guarantees.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Adobe Illustrator
Format_Version_Number: unknown
Format_Information_Content:
AI-ft.zip is the feet version of the contour map and AI-m.zip is the meter version of the map.
File_Decompression_Technique: The files are "zipped" and must be "unzipped" before use.
Transfer_Size: 96
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
<https://sofia.usgs.gov/publications/maps/lakeokeebathy/index.html#data>
Access_Instructions: The contour maps may be downloaded from the SOFIA website.
Digital_Form:
Digital_Transfer_Information:
Format_Name: JPEG
Format_Version_Number: unknown
Format_Information_Content:
The maps are available in two versions - contours in feet and contours in meters
Transfer_Size: 0.6
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
<https://sofia.usgs.gov/publications/maps/lakeokeebathy/index.html#data>
Access_Instructions: The maps may be downloaded from the SOFIA website
Digital_Form:
Digital_Transfer_Information:
Format_Name: Adobe PDF
Format_Version_Number: unknown
Format_Information_Content:
The maps are available in two sizes - 8.18 x 9.92 in and 27.24 x. 33.03 in with the contours in feet and meters
Transfer_Size: 3.9
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name:
<https://sofia.usgs.gov/publications/maps/lakeokeebathy/index.html#data>
Access_Instructions: The maps may be downloaded from the SOFIA website
Fees: none

Metadata_Reference_Information:
Metadata_Date: 20110518
Metadata_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Heather Henkel
Contact_Organization: U.S. Geological Survey
Contact_Address:
Address_Type: mailing and physical address
Address: 600 Fourth Street South
City: St. Petersburg
State_or_Province: FL
Postal_Code: 33701
Country: USA
Contact_Voice_Telephone: 727 803-8747 ext 3028
Contact_Facsimile_Telephone: 727 803-2030
Contact_Electronic_Mail_Address: sofia-metadata@usgs.gov
Metadata_Standard_Name: Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Access_Constraints: none
Metadata_Use_Constraints:
This metadata record may have been copied from the SOFIA website and may not be the most recent version. Please check <https://sofia.usgs.gov/metadata> to be sure you have the most recent version.

The principal investigator for this project has declined to provide a review of the information in the metadata record. Any questions about the information should be directed to the Point of Contact under Citation Information or the Process Contact(s).


This page is <https://sofia.usgs.gov/metadata/sflwww/hires_bathy_lakeo.html>

U.S. Department of the Interior, U.S. Geological Survey
Comments and suggestions? Contact: Heather Henkel - Webmaster
Generated by mp version 2.8.18 on Wed May 18 09:51:43 2011