CGRG Bibliography of Canadian Geomorphology
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Author : Fitzgerald, D.F.; Price, J.S.; Gibson, J.J.; and Emile, L.
Date : 2001.
Title : Surface water discharge and groundwater storage patterns in a hypermaritime bog near Prince Rupert, B.C.
Publication : Annual Scientific Meeting of the Canadian Geophysical Union. May 14-17, 2001, University of Ottawa, Ottawa.
Issue :
Page(s) :
Abstract
Stream discharge and water table elevations were monitored hourly during the summer of 1999 on a 4.4 ha. bog situated within a forested wetland complex of the hypermaritime climate zone of North Coast British Columbia. The study site is located in Diana Lake Provincial Park about 20 km. southeast of Prince Rupert, B. C. Mean annual temperature in Prince Rupert is 6.9°C and mean annual precipitation is 2551 mm. This region is characterized by a rugged landscape; between 51-75% of the landcover is made up of wetlands including sloping bogs, bog forests, bog woodlands and fens. Contained within the study site bog is a well-defined stream system that drains a catchment area of 0.7 ha. A weir was installed to measure surface flow off the bog at the eastern outflow and five automatic recording wells were installed to monitor water table fluctuations on the bog throughout. It was found that during rain events groundwater storage was filled within the bog before discharge began in the stream. If the bog watertable was low, the stream response was minimal, however, if the water table was already high, response in the stream was maximized and immediate. Specific yield values were estimated from average watertable change, basin area and total volume of rainfall on the bog and agree well with values obtained from peat samples analyzed in the lab. Overall the bog groundwater and surface stream interacted efficiently to manage the high rainfalls that occur in the area.
Bibliography of Canadian Geomorphology