This grid represents approximately 4 kilometers of swath bathymetric data collected within the Upper St. Clair River, May 29 - June 4, 2008. These data are used to define the morphology of the riverbed. These data were collected offshore of Port Lambton, Ontario and used to compare the geologic framework with the northernmost survey area.
Are there legal restrictions on access or use of the data?
Use_Constraints:These data are NOT to be used for navigation. Public domain data from the U.S. Government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey as the originator of the dataset.
Neither the U.S. Government, the Department of the Interior, nor the USGS, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the USGS in the use of these data or related materials.
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
|Data format:||WinZip (version 9.0) file containing ASCII raster grid, ESRI binary grid and metadata for bathymetric data collected during USGS cruise 08016. in format AIG (version ArcGIS 9.2) Size: 8|
|Data format:||WinZip (version 9.0) file containing ASCII raster grid, ESRI binary grid and metadata for bathymetric data collected during USGS cruise 08016. in format AAIGrid (version ArcGIS 9.2) Size: 8|
The grid contained in the portl_05m.zip file is available as an ESRI Binary grid and an ASCII grid with an ESRI header. However, the folder structure within portl_05m.zip is critical to proper use of the ESRI binary grid.
To utilize these data, the user must have a GIS software package capable of reading ESRI Binary grids or ASCII grids with ESRI headers, or be able to manipulate an ASCII matrix with a geospatial header. The ASCII raster files can be easily converted to ESRI grid format in either ArcView with Spatial Analyst extension (Import Data Source: ASCII Raster) or ArcGIS with Spatial Analyst extension (ASCII to Raster). The user should select floating point grid (as opposed to integer grid) when converting the bathymetry data.