Reducing clear-cut logging and paying more attention to where trees are removed will help reduce the flood risk in British Columbia, a researcher says.
A paper published by a team, including University of British Columbia Prof. Younes Alila, found that when 21 per cent of trees were harvested using clear-cut logging, the average flood size increased by 38 per cent in the Deadman River watershed and 84 per cent in Joe Ross Creek area, both snowy regions located north of Kamloops.
“The bottom line is, the only way we can appreciate the power of the forest in mitigating against the flood risk is to step back and make sure we look at cumulative effects within the watershed,” Alila said. Alila said previous studies before about 2009 only looked at the increasing size of floods and not necessarily the increasing frequency, which he said meant they underestimated the impact of changes on the ground, such as through logging.
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