About Heather McGrath

Heather McGrath is a PhD Candidate in Geographic Information Systems and Science in the Department of Geodesy and Geomatics Engineering, University of New Brunswick, Canada.

Posts by Heather McGrath

Posted on June 26, 2017
Grand Lake Meadows (GLM), the largest wetland in New Brunswick. GLM is a historically and ecologically significant area which is ecologically diverse and home to an abundance of wildlife, due in part to the extensive floodplains, presiding water levels and the presence of Grand Lake. Given the relatively flat terrain in this area, elevation range of 14m (Figure 1), and recent open access to elevation data, it was of interest to evaluate the accuracy of elevation data available from numerous online sources, including Esri, Google and Bing. Specifically, the tested elevation data sets offer data through Representational State Transfers...
Posted on December 5, 2015
The development of infrastructure and dense urbanization along water courses and the increasing severity of storm events has brought to focus the need for methods for evaluating the potential negative impact to communities. While many complex computer models exist for flood risk assessment, they are technologically sophisticated and intended, first of all, for use by a small number of technical and scientific expert experts. Regardless of how comprehensive and sophisticated the existing tools are, they cannot be fully adapted for the Canadian hazard and exposure settings and, in particular, do not fit the needs of the local non-expert public...