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Dust control option for Williston Reservoir : preliminary recommendation

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Title: Dust control option for Williston Reservoir : preliminary recommendation
Author: Arocena, Joselito M.; Young, Jane P.; Baker, Doug
Issue Date: 1996
Publicly Available in cIRcle 2009-07-08
Series/Report no. British Columbia Mine Reclamation Symposium 1996
Abstract: Williston Reservoir is the largest reservoir in British Columbia and covers an area of approximately 180,000 ha along the Rocky Mountain trench. The water level fluctuates from an average of 656 to 670 m above sea level between the months of April and September. During low pool, dust storms frequently occur from wind erosion of large areas of foreshore subjected to the prevailing southeasterly winds. The dust storms create a hazard for air navigation and problems for the First Nations village of Tsay Keh. The purpose of this paper is to provide an overview of dust generation and use of vegetation as a possible reclamation method to control wind erosion. Soil samples were collected from potential sources of dust based on exposure, accessibility, and proximity to Tsay Keh village. Results of particle size analysis showed that the amounts of particles <0.840 mm range from 83 to 99%. Using the wind erosion equation, the predicted total soil loss ranges from 40 to 104 Mg soil ha⁻¹ yr⁻¹. Our estimates indicate that the establishment of 30% vegetation cover will reduce soil loss by 80% and increasing the cover to 60% will decrease soil loss to 5%. For areas that remain exposed for at least four months, vegetation cover may include growing of annuals (e.g., rye) and sedges. For areas that are inundated early in the spring, options may include "amphibious" plants, that can survive in both terrestrial and aquatic environments.
Affiliation: Applied Science, Faculty of
URI: http://hdl.handle.net/2429/10402
Peer Review Status:

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