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TitleEstimating a reference elevation for the 1999 U.S. National Oceanic and Atmospheric Administration bathymetry map of Lake Ontario, Ontario
LicencePlease note the adoption of the Open Government Licence - Canada supersedes any previous licences.
AuthorLewis, C F MORCID logo; Todd, B JORCID logo; Hayward, S E
SourceGeological Survey of Canada, Open File 8366, 2018, 14 pages, Open Access logo Open Access
PublisherNatural Resources Canada
Documentopen file
Mediaon-line; digital
File formatpdf
NTS30M/03; 30M/04; 30M/05; 30M/06; 30M/07; 30M/08; 30M/09; 30M/10; 30M/11; 30M/12; 30M/14; 30M/15; 30M/16; 30N/05; 30N/06; 30N/07; 30N/09; 30N/10; 30N/11; 30N/12; 30N/13; 30N/14; 30N/15; 30N/16; 31C/01; 31C/02; 31C/03; 31C/04
AreaLake Ontario
Lat/Long WENS -80.0000 -76.0000 44.2500 43.0000
Subjectsgeophysics; marine geology; surficial geology/geomorphology; Nature and Environment; Holocene; bathymetry; surface waters; lakes; mapping techniques; paleogeography; sea level changes; paleo-sea levels; geophysical surveys; acoustic surveys, marine; lacustrine deposits; marine sediments; beach deposits; barrier beaches; shoreline changes; Grimsby-Oakville Barrier Beach; Early Lake Ontario; Champlain Sea; elevations; Methodology; Phanerozoic; Cenozoic; Quaternary
Illustrationsgeophysical profiles; tables; schematic representations; histograms; graphs
ProgramClimate Change Geoscience Coastal Infrastructure
Released2018 03 06
Summary(Plain Language Summary, not published)
Sounding data from a 1974 expedition aboard MV Martin Karlsen on Lake Ontario are compared with water depths in a 1999 bathymetry map published by U.S. National Oceanic and Atmospheric Administration to establish the reference elevation used by the map-maker. The reference elevation found was 74.0 metres above sea level, identical with the datum used by the Canadian Hydrographic Service for navigation charts in Lake Ontario between 1955 and 1985. The reference will be used to estimate the elevation of geological features beneath Lake Ontario for comparison with the elevations of onshore features.

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