Two Dimensional Hydrologic Modelling of a Peat Mined Bog using GSSHA

Mauricio Herrera

ABSTRACT

A two-dimensional model representing both surface and sub-surface hydrologic processes was built and calibrated using the Gridded Surface Sub-surface Hydrology Analysis model (GSSHA), developed by the Army Corps of Engineers. Modelling techniques to represent infiltration, evapotranspiration, shallow groundwater movement, and interaction between ditch and groundwater amongst other processes are summarized. The findings from this study are relevant for bog restoration efforts where heavy peat mining activities have created high levels of disturbance. An appropriate understanding of the bog’s hydrology is important to optimize the selection and implementation of management options. The model was developed for an area of Burns Bog, an internationally recognized ecosystem in Delta, British Columbia.


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