Peace-Athabasca Delta Water Management Works Evaluation
Peace-Athabasca Delta Water Management Works Evaluation

Author: Peace-Athabasca Delta Implementation Committee

Publisher:

Published: 1987

Total Pages:

ISBN-13:

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Report of an intergovernmental committee representing the governments of Canada, Alberta and Saskatchewan. Established in 1974 to coordinate programs related to restoring low water levels that occured on the delta following construction of the W.A.C. Bennett Dam on the Peace River. Appendices cover hydrological and biological assessments and ancilliary studies.

Peace-Athabasca Delta Water Management Works Evaluation
Peace-Athabasca Delta Water Management Works Evaluation

Author:

Publisher:

Published: 1987

Total Pages:

ISBN-13:

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Report prepared at the request of the Committee to evaluate the hydrological performance of remedial weirs constructed in the Peace-Athabasca Delta on the outlet channels of Lake Athabasca. The two rock weirs were constructed in 1976 as a major part of an implementation agreement between the governments of Canada, Alberta and Saskatchewan to restore as nearly as possible water levels in the Peace-Athabasca Delta and thereby reestablish associated ecological conditions. This report represents the findings and conclusions reached by members of the Hydrology Subcommittee regarding the weir performance and hydrological conditions in the delta. The comparative model simulations for 1960-81 were constructed of the natural regime, and the regulated regime in combination with the Rivière des Rochers and Revillon Coupé weirs, using a one-dimensional hydrodynamic model developed in the late 1970s.

Peace-Athabasca Delta Water Management Works Evaluation
Peace-Athabasca Delta Water Management Works Evaluation

Author:

Publisher:

Published: 1987

Total Pages: 63

ISBN-13:

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In September 1974, Canada, Alberta and Saskatchewan agreed to construct remedial works in the Peace-Athabasca Delta to partially restore water levels which had been adversely affected by construction of the W.A.C. Bennett Dam in British Columbia. This final report provides an assessment of the remedial works undertaken and presents the results of ancillary studies conducted by the Committee on the growth of Creed Creek, a possible structure on the Quatre Fourches, fish passage at the weirs and modifications to the boat tramway. Recommendations for long-term hydrological and biological monitoring are included.

Hydraulic Modelling of the Peace-Athabasca Delta Under Modified and Natural Flow Conditions
Hydraulic Modelling of the Peace-Athabasca Delta Under Modified and Natural Flow Conditions

Author: Bill Aitken

Publisher: The Study

Published: 1994

Total Pages: 230

ISBN-13:

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Construction of the Bennett Dam in British Columbia altered natural fluctuations of downstream flows in the Peace River in Alberta, with major implications for the ecosystem of the Peace-Athabasca Delta. In later years, downstream weirs were constructed to restore the water level regime in the Delta. This report presents the results of a modelling exercise undertaken in an attempt to assess the effect of the weirs and the dam on the Delta water levels during 1985-90, at which time Lake Athabasca water levels were low and it was not clear whether the weirs were functioning properly or if the low water levels were caused by low flows coming from the upper Peace and Athabasca river basins. The methodology uses a one-dimensional hydrodynamic model, suitably modified and calibrated. The appendices include numerous plots of water levels indicating the effects of the weirs and dam on natural conditions.