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Investigations of poly-chlorinated biphenyls in bottom sediments of the Bear-Wapiti-Smoky-Peace and Upper Athabasca river systems, 1989-2000

Description

Studies of contaminant distributions by the Northern River Basins Study (NRBS) revealed high levels of PCBs in fish in the upper Athabasca and in the Wapiti-Smoky rivers, relative to other areas... More ≫

Description

Studies of contaminant distributions by the Northern River Basins Study (NRBS) revealed high levels of PCBs in fish in the upper Athabasca and in the Wapiti-Smoky rivers, relative to other areas in the basins. In response to recommendations of the NRBS, the purpose of this work was to investigate the source and reasons for the PCB contamination. In co-ordination with other projects under the Northern Rivers Ecosystem Initiative (NREI) on fish, water, and benthos, this project investigated PCBs in river bottom sediments to see if there were spatial or temporal patterns that might identify the source(s) of contamination.

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Flows required to protect water quality in the Little Bow River and Mosquito Creek

Description

To assist the development of plans for the Highwood and Little Bow River watersheds, the Science and Standards Division, Alberta Environment was asked to examine the relationship between flow and... More ≫

Description

To assist the development of plans for the Highwood and Little Bow River watersheds, the Science and Standards Division, Alberta Environment was asked to examine the relationship between flow and water quality in the Little Bow River and Mosquito Creek. This report presents an evaluation of the effects of flow on water quality. Equations were developed to predict the relationship between flow and dissolved oxygen in the Little Bow River, and the relationship between flow and total suspended solids in Mosquito Creek. These equations were used to estimate flows that should ensure suitable water quality.

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Ells River water quality data report

Description

Presents water quality data collected at several points on Ells River between February 2000 and April 2001, as well as data collected on the Ells River prior to 2000.

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