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Vertical datum conversion in the Lake Erie coastal area

Seamless integration of land-elevation and water-depth information in coastal environments is required in many geospatial applications and decision-making processes. Vertical datum conversion is the central component of the integration process. This study introduces a methodology of vertical datum conversion in Lake Erie, which utilizes the public published models and toolkits developed by National Geodetic Survey (NGS) to form a new transformation system. In this research, a system of vertical datum conversion was developed and a test area was chosen to verify conversion results. The system we developed can be widely used in the coastal area of the Great Lakes, either for spatial data integration or coastal management.