All Resources

Northern rivers ecosystem initiative : synthesis report

Description

This synthesis report builds on information generated during the Northern River Basins Study. It presents information from the Northern River Ecosystem Initiative to give a new benchmark on the... More ≫

Description

This synthesis report builds on information generated during the Northern River Basins Study. It presents information from the Northern River Ecosystem Initiative to give a new benchmark on the present health of the northern river basins. The report also provides an update on development in the basins, and describes initiatives, policies, partnerships, regulations, monitoring, research and other programs implemented to protect the environment. Results of more than 20 scientific projects undertaken during the five-year study are summarized, and a discussion and conclusions about what has been learned is presented.

Tags

Northern rivers ecosystem initiative 1998-2003 : final report

Description

The Northern Rivers Ecosystem Initiative (NREI) was a five-year endeavor by the governments of Canada, Alberta, and the Northwest Territories to address commitments made by the three governments... More ≫

Description

The Northern Rivers Ecosystem Initiative (NREI) was a five-year endeavor by the governments of Canada, Alberta, and the Northwest Territories to address commitments made by the three governments in response to the preceding Northern River Basins Study (NRBS). The NRBS was itself a five-year initiative to obtain information regarding the existing conditions in, and the effects of development on, the aquatic ecosystem of the Peace-Athabasca-Slave river basins. The NREI involved scientists and resource managers from governments, universities, industry, and other organizations. Highlights of their actions are included in this report, with further detail available in various technical science reports.

Tags

Northern rivers ecosystem initiative : key findings

Description

The governments of Canada, Alberta and the Northwest Territories established the Northern Rivers Ecosystem Initiative to answer questions and address recommendations from the Northern River Basins... More ≫

Description

The governments of Canada, Alberta and the Northwest Territories established the Northern Rivers Ecosystem Initiative to answer questions and address recommendations from the Northern River Basins Study, which took place between 1992 and 1996. The initiative was a science-based effort to gain more information to help understand the impacts of human activities on aquatic ecosystems in this region of Canada's north. This resource provides a general summary of the findings of the initiative. It also included are references to other studies and monitoring programs done during these years.

Tags

Investigations of streambed oxygen demand, Athabasca River, October 1994 to March 1995

Description

Streambed oxygen demand (SOD) is thought to account for a significant fraction of the total oxygen demand in the Athabasca River in the winter. SOD was sampled in the Athabasca River from October... More ≫

Description

Streambed oxygen demand (SOD) is thought to account for a significant fraction of the total oxygen demand in the Athabasca River in the winter. SOD was sampled in the Athabasca River from October 1994 to March 1995 with objectives of obtaining a series of measurements from upstream of Hinton to the Calling River area, and investigation temporal change in SOD at key sites.

Tags

Water quality in the Athabasca River system, 1990-93

Description

This report presents the findings of water quality monitoring and surveys on the Athabasca River system by Alberta Environmental Protection in the years 1990 to 1993. Water quality has been... More ≫

Description

This report presents the findings of water quality monitoring and surveys on the Athabasca River system by Alberta Environmental Protection in the years 1990 to 1993. Water quality has been monitored by means of longitudinal synoptic surveys, recording meters, and a network of regular sampling sites. The effects of effluents are quantified and evaluated with reference to the Alberta Ambient Surface Water Quality Interim Guidelines and the Canadian Water Quality Guidelines. The results of this set of surveys are compared with previous winter water quality surveys from 1988 and 1989.

Tags

Oxygen conditions in the Athabasca River system, with emphasis on winters 1990-93

Description

This report presents the findings of dissolved oxygen monitoring and surveys on the Athabasca River system in the years 1990-93. Dissolved oxygen has been monitored by means longitudinal synoptic... More ≫

Description

This report presents the findings of dissolved oxygen monitoring and surveys on the Athabasca River system in the years 1990-93. Dissolved oxygen has been monitored by means longitudinal synoptic surveys, recording oxygen meters, and a network of regular sampling sites.

Tags

Chlorinated anisoles and veratroles in a Canadian river receiving bleached kraft pulp mill effluent : identification, distribution, and olfactory evaluation

Description

One chlorinated anisole and three chlorinated veratroles have been identified an extracts of Athabasca River water collected in the winter downstream from a bleached kraft pulp mill effluent. The... More ≫

Description

One chlorinated anisole and three chlorinated veratroles have been identified an extracts of Athabasca River water collected in the winter downstream from a bleached kraft pulp mill effluent. The potential for causing off-flavours in the receiving waters was evaluated.

Tags

Adsorbable organic halide (AOX) sampling in the Athabasca and Wapiti-Smoky Rivers : fall & winter 1989-90

Description

Adsorbable Organic Halide (AOX) has become an accepted measure of chlorinated organic material, and is used to monitor and regulate bleached Kraft pulp mill effluents. Two surveys on the... More ≫

Description

Adsorbable Organic Halide (AOX) has become an accepted measure of chlorinated organic material, and is used to monitor and regulate bleached Kraft pulp mill effluents. Two surveys on the Wapiti-Smoky river system and on the Athabasca River were carried out in 1989-90 to assess the presence and downstream persistence of AOX.

Tags

Sediment oxygen demand during the winter in the Athabasca River and the Wapiti-Smoky River system, 1990

Description

Sediment Oxygen Demand (SOD) is an important variable in the oxygen balance of rivers, in particular during the winter under low flow and extensive ice-cover. In 1989, a method to measure SOD... More ≫

Description

Sediment Oxygen Demand (SOD) is an important variable in the oxygen balance of rivers, in particular during the winter under low flow and extensive ice-cover. In 1989, a method to measure SOD in-situ was developed and used to measure winter SOD rates in the Athabasca River. The main objectives of the 1990 study were to determine if SOD rates increased over the winter and to determine the longitudinal trend of SOD in the Athabasca River and the Wapiti-Smoky River system.

Tags

Athabasca River winter reaeration investigation : final report

Description

Proposed and existing pulp mill developments in the Athabasca River Basin impact on winter dissolved oxygen conditions in the rivers that receive their effluent. In 1987, Alberta Environment... More ≫

Description

Proposed and existing pulp mill developments in the Athabasca River Basin impact on winter dissolved oxygen conditions in the rivers that receive their effluent. In 1987, Alberta Environment started using water quality models to simulate dissolved oxygen levels. This information was used to formulate effluent standards and for management of basin water quality. This report describes the theory of air to liquid gas exchange, methods to measure reaeration, the procedure designed to measure under ice reaeration, results of the field study, and conclusions from the study.

Tags