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Land use impacts on ground and surface water quality in the Bertrand Creek watershed (Township of Langley, B.C.) Solano, Maria Gabriela

Abstract

Bertrand Creek is a small transboundary watershed with mixed land use that provides a good case study to compare the impacts of urban and agricultural activities on water resources. Located in southeastern Langley, it encompasses the city of Aldergrove and an agricultural area that extends from south of Aldergrove to the Canada - US international border. The main goal of this study was to determine land use impacts on water quality. Water samples were analyzed for nutrients and dissolved elements and results were linked to land use through a GIS. Streambed sediments were analyzed for trace metals and bioavailability of metals was measured along Bertrand Creek using the diffusive gradients in thin films (DGT) technique. Land use didn't seem to be correlated to groundwater quality but results indicated that nitrate contamination in the Abbotsford aquifer is a concern. Well depth appeared to have a significant influence in the quality of groundwater and only wells

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