Bathymetry of Lake Ontario
Bathymetry of Lake Ontario has been compiled as a component of a NOAA project to rescue Great Lakes lake floor geological and geophysical data and make it more accessible to the public. The project is a cooperative effort between investigators at the NOAA National Geophysical Data Center's Marine Geology & Geophysics Division (NGDC/MGG) and the NOAA Great Lakes Environmental Research Laboratory (GLERL). was compiled utilizing the entire historic sounding data base. The entire historic hydrographic sounding data base from the U.S. and Canada, originally collected for nautical charting purposes, was used to create a complete and accurate representation of Lake Ontario bathymetry. The U.S. data primarily came from the NOS Hydrographic Survey Data. This and other bathymetric sounding data collected by the U.S. National Ocean Service's (NOS) Coast Survey and the U. S. Army Corps of Engineers was employed to construct bathymetric contours at 1 meter intervals from 1-10 meters depth and 2 meter intervals at depths greater than 10 meters. Compilation scales ranged from 1:10,000 to 1:50,000. Bathymetric sounding data collected by the Canadian Hydrographic Service (CHS) were employed to construct bathymetric contours at 1 meter intervals and compilation scales ranging from 1:1,000 to 1:30,000. Digitization of the bathymetric contours, merging of the bathymetric contour data sets, poster construction, and preparation of a CD-ROM, were accomplished at the NGDC. Multibeam bathymetric data collected by the University of New Brunswick's Ocean Mapping Group (UNB-OMG), with support of the Geological Survey of Canada (GSC) and the CHS, were kindly made available in gridded form. In the two areas where multibeam bathymetric data were available, no other bathymetric data were used in the compilations. In some areas all available Canadian and U. S. bathymetric sounding data, collected at different times on different survey expeditions, were used to derive the contours. The U.S. coastline used was primarily the GLERL Medium Resolution Vector Shoreline dataset (Lee, 1998). Where needed for more coverage, the NOS Medium Resolution Vector Shoreline for the Conterminous U.S. (1994) dataset was used. Coastlines from the CHS bathymetric sounding data field sheets were used to complete the Canadian coastline. Images were constructed using the publicly-available software Generic Mapping Tools (GMT).
- Cite as: NOAA National Geophysical Data Center. 1999: Bathymetry of Lake Ontario. First. NOAA National Centers for Environmental Information. https://doi.org/10.7289/V56H4FBH. Accessed [date].
- doi:10.7289/V56H4FBH
- NCEI Metadata ID: gov.noaa.ngdc.mgg.dem:282
gov.noaa.ngdc.mgg.dem:282
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Ordering Instructions | Contact NCEI for other distribution options and instructions. |
Distributor | NOAA National Centers for Environmental Information
ncei.info@noaa.gov |
Dataset Point of Contact | NOAA National Centers for Environmental Information
ncei.info@noaa.gov |
Dataset Point of Contact | DEM Information
NOAA National Centers for Environmental Information dem.info@noaa.gov |
Time Period | Unknown to Unknown |
Spatial Reference System | urn:ogc:def:crs:EPSG::4269Local Lake datum |
Spatial Bounding Box Coordinates |
N: 44.25
S: 43.15
E: -76.05
W: -79.90
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Spatial Coverage Map |
General Documentation |
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Edition | First |
Dataset Progress Status | Complete - production of the data has been completed
Historical archive - data has been stored in an offline storage facility |
Data Update Frequency | As needed |
Supplemental Information |
Supplemental information regarding spatial reference. Contours are vertically referenced to lake levels.
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Purpose | Scientific Research, Commercial Exploration, Fishing, Policy and Decision-making |
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Theme keywords | Global Change Master Directory (GCMD) Science Keywords
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Data Center keywords | Global Change Master Directory (GCMD) Data Center Keywords
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Platform keywords | Global Change Master Directory (GCMD) Platform Keywords
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Place keywords | Getty Thesuarus of Geographic Names
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Project keywords | Global Change Master Directory (GCMD) Project Keywords
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Access Constraints |
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Other Constraints | Cite as: NOAA National Geophysical Data Center. 1999: Bathymetry of Lake Ontario. First. NOAA National Centers for Environmental Information. https://doi.org/10.7289/V56H4FBH. Accessed [date]. |
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Last Modified: 2020-05-21-06:00
For questions about the information on this page, please email: ncei.info@noaa.gov