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Dataset Overview | National Centers for Environmental Information (NCEI)

Galveston Bay (G260) Bathymetric Digital Elevation Model - NOAA/NOS Estuarine Bathymetry

A 1/3 arc-second Mean Lower Low Water bathymetric DEM of NOS hydrographic survey data in Galveston Bay.
  • Cite as: National Centers for Environmental Information, 2018. NOAA NOS Estuarine Bathymetry - Galveston Bay (G260). National Centers for Environmental Information, NOAA. doi:10.7289/V5KD1W7S [access date].
gov.noaa.ngdc.mgg.dem:galveston_bay_G260_2018
Search Data
  • DEM text search (search)
    Text search for locating completed and planned DEMs.
  • Bathymetric Data Viewer (search)
    The Bathymetric Data Viewer is an interactive map providing discovery, descriptions, and download capability for bathymetric survey data and digital elevation models archived at NOAA's National Centers for Environmental Information (NCEI).
Download Data
Distribution Formats
  • netCDF (Version: 4 Classic)
Distributor DEM Information
NOAA National Centers for Environmental Information
dem.info@noaa.gov
Dataset Point of Contact DEM Information
NOAA National Centers for Environmental Information
dem.info@noaa.gov
Time Period
Spatial Reference System urn:ogc:def:crs:EPSG::4326urn:ogc:def:crs:EPSG::5866
Spatial Bounding Box Coordinates
West: -95.499999986
East: -94.250000021
South: 29.000000007
North: 29.999999979
Spatial Coverage Map
General Documentation
Associated Resources
  • NOAA NOS Estuarine Bathymetry
  • Big Earth Data Initiative (BEDI): Archival and Updates to NOAA Estuarine Bathymetry Grids
Publication Dates
  • publication: 2018-05-29
Edition 2
Data Presentation Form mapDigital
Dataset Progress Status Complete - production of the data has been completed
Data Update Frequency Irregular
Supplemental Information
Other sources of bathymetry may exist within DEM boundaries.
Purpose The objective of this project is to update NOAA NOS Estuarine Bathymetry Digital Elevation Models (DEMs), gridded representations of bathymetry for various estuaries in the United States, that were initially created in 1998 by the now defunct NOS Special Projects Office. Although these data still represent the “best available” gridded depictions of bathymetry in some locations, they are primarily based on antiquated historical data and do not include many modern survey data, in particular, high resolution BAG format hydrographic data. NCEI will identify more recent NOS hydrographic survey data if available and update existing DEMs compliant with NOAA Data Directives and meeting the requirements for Data Management, Discoverability, Accessibility, Documentation, Readability, and Data Preservation and Stewardship as per the Big Earth Data Initiative (BEDI).
Use Limitations
  • Not to be used for navigation. Although these data are of high quality and useful for planning and modeling purposes, they are not suitable for navigation. For navigation, please refer to the NOS nautical chart series.
  • Produced by the NOAA National Centers for Environmental Information. Not subject to copyright protection within the United States.
Dataset Citation
  • Cite as: National Centers for Environmental Information, 2018. NOAA NOS Estuarine Bathymetry - Galveston Bay (G260). National Centers for Environmental Information, NOAA. doi:10.7289/V5KD1W7S [access date].
Originators
  • DOC/NOAA/NESDIS/NGDC > National Geophysical Data Center, NESDIS, NOAA, U.S. Department of Commerce
Publishers
  • NOAA National Centers for Environmental Information
Theme keywords Global Change Master Directory (GCMD) Science Keywords
  • Earth Science > Oceans > Bathymetry/Seafloor Topography > Seafloor Topography
  • Earth Science > Oceans > Bathymetry/Seafloor Topography > Bathymetry
  • Earth Science > Oceans > Bathymetry/Seafloor Topography > Water Depth
  • Earth Science > Oceans > Coastal Processes > Coastal Elevation
Uncontrolled
  • Coastal Relief
  • Gridded elevations
  • Bathymetry
Global Change Master Directory (GCMD) Service Keywords
  • DATA ANALYSIS AND VISUALIZATION > GEOGRAPHIC INFORMATION SYSTEMS > WEB-BASED GEOGRAPHIC INFORMATION SYSTEMS
  • DATA MANAGEMENT/DATA HANDLING > DATA SEARCH AND RETRIEVAL
  • DATA ANALYSIS AND VISUALIZATION > VISUALIZATION/IMAGE PROCESSING
Global Change Master Directory (GCMD) Service Keywords
  • DATA ANALYSIS AND VISUALIZATION > GEOGRAPHIC INFORMATION SYSTEMS > WEB-BASED GEOGRAPHIC INFORMATION SYSTEMS
  • DATA MANAGEMENT/DATA HANDLING > DATA SEARCH AND RETRIEVAL
  • DATA ANALYSIS AND VISUALIZATION > VISUALIZATION/IMAGE PROCESSING
Place keywords None
  • Galveston Bay
  • Texas
  • United States
Data Resolution keywords Global Change Master Directory (GCMD) Horizontal Data Resolution Keywords
  • 1 meter - < 30 meters
Global Change Master Directory (GCMD) Vertical Data Resolution Keywords
  • 1 meter - < 10 meters
Use Constraints No constraint information available
Access Constraints
  • Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.
Other Constraints Cite as: National Centers for Environmental Information, 2018. NOAA NOS Estuarine Bathymetry - Galveston Bay (G260). National Centers for Environmental Information, NOAA. doi:10.7289/V5KD1W7S [access date].
Fees Fee information not available.
Lineage information for: dataset
Processing Steps
  • The original DEM footprint shapefile was edited and converted to a raster with elevation value set to zero and used as a mask to clip out a subset of the source DEMs for the final gridded bathymetry data product.
Processing Environment Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.5.0.6491
Source Datasets
  • NOS Estuarine Bathymetry footprint
    • Description of Source: Source Contribution: Shoreline position
    • Time Instant: 2006-06-23
  • Upper Texas Coast 1/9 arc-second NAVD 88 Coastal Digital Elevation Model
    • Description of Source: Source Contribution: Gridded bathymetry
  • VDatum software v. 3.7
    • VDatum (download)
      Vertical Datum Transformation tool
    • Description of Source: Source Contribution: vertical datum transformation tool
    • Time Instant: 2017-09-07
Last Modified: 2018-06-06
For questions about the information on this page, please email: dem.info@noaa.gov