Assessment and Validation of Modelling Under-ice Dissolved Oxygen Using DOSTOC, Athabasca River, 1988 to 1994
Title | Assessment and Validation of Modelling Under-ice Dissolved Oxygen Using DOSTOC, Athabasca River, 1988 to 1994 PDF eBook |
Author | Patricia A. Chambers |
Publisher | |
Pages | 220 |
Release | 1996 |
Genre | Science |
ISBN |
The aim of this study was to examine the existing model approach and to make recommendations for improved modelling of under-ice dissolved oxygen (DO) concentrations in the Athabasca River. Previous modelling efforts have involved using the DO simulation model DOSTOC, but discrepancies between observed and predicted DO concentrations for 1992 and 1993 highlighted the needs for a review and assessment of the modelling approaches used. This report reviews the structure of the DOSTOC model and input data used for modelling, then describes a stochastic run of the model using the best available values for input data and process rates, including revised rates and ratios for converting five-day biological oxygen demand (BOD) values to ultimate BOD values, measured values for sediment oxygen demand and sedimentation, and a temperature correction for pulp mill BOD decay rates. Simulation results indicate whether the model could predict DO for 1990-94 winters. Regression equations were also developed relating DO concentration to river distance.
Northern River Basins Study
Title | Northern River Basins Study PDF eBook |
Author | Northern River Basins Study (Canada) |
Publisher | |
Pages | 292 |
Release | 1996 |
Genre | Athabasca River Watershed (Alta.) |
ISBN |
Report to the federal ministers of Environment and Indian & Northern Affairs, Alberta's Minister of Environmental Protection, and NWT's Minister of Renewable Resources. Summarises the main scientific findings of the Northern River Basins Study, which was established to examine the relationship between industrial, municipal, agricultural, and other development and the Peace, Athabasca, and Slave River basins. Reviews the characteristics of the northern river basins and their peoples, the organisation of the Study, and major findings in the areas of environmental overview, use of aquatic resources, traditional knowledge, flow regulation, fish distribution and habitat, nutrients, dissolved oxygen, contaminants, drinking water, ecosystem health, modelling, human health, and cumulative effects. Recommendations by the Study Board, First Nations, and scientific advisors regarding such issues as basin management, monitoring, research, public participation, and a successor organisation are then presented. Also includes a summary of opinions, suggestions, and recommendations expressed at 17 community workshops held throughout the northern river basins area.
Technical Reports of the Northern River Basins Study by Subject and Geographical Area Studied
Title | Technical Reports of the Northern River Basins Study by Subject and Geographical Area Studied PDF eBook |
Author | Mark S. J. Ouellett |
Publisher | |
Pages | 74 |
Release | 1997 |
Genre | Aquatic ecology |
ISBN |
Lists Northern River Basins Study technical reports by issue number, subject, and geographic area studied. Subject areas used to classify the reports are: hydrology/hydraulics, nutrients/dissolved oxygen, contaminants, food chain, drinking water, other uses, traditional knowledge, and synthesis and modelling. Ten geographic divisions are used: three each for the Athabasca and Peace Rivers, and one each of the Wapiti/Smoky rivers, Peace-Athabasca Delta, Lake Athabasca, and Rivière des Rochers/Slave River.
An Evaluation of Dissolved Oxygen Modelling of the Athabasca River and the Wapiti-Smoky River System
Title | An Evaluation of Dissolved Oxygen Modelling of the Athabasca River and the Wapiti-Smoky River System PDF eBook |
Author | Gary MacDonald |
Publisher | Edmonton, Alta : The Study |
Pages | 174 |
Release | 1993 |
Genre | Water |
ISBN |
An important component of an overall mutrients model for the northern river systems is the development of appropriate dissolved oxygen models. This study tries to assess the ability of the models (dissolved oxygen model DOSTOC) to predict observed conditions and to identify field research needs for model refinement.
Dissolved Oxygen Conditions and Fish Requirements in the Athabasca, Peace and Slave Rivers
Title | Dissolved Oxygen Conditions and Fish Requirements in the Athabasca, Peace and Slave Rivers PDF eBook |
Author | Patricia A. Chambers |
Publisher | |
Pages | 112 |
Release | 1996 |
Genre | Nature |
ISBN |
The NTBS was designed to address the ecological concerns about pulp mill expansion, and to increase scientific knowledge about environmental conditions [ecology, ecosystem sustainability, water pollution and control, habitat, effect on fish and fishing, etc.] in the major river systems of the north. The study's objectives were to gather and interpret sound scientific information about the basins, develop appropriate recommendations for basin management, and communicate effectively with the public. The government response report confirms the governments' commitment to ecosystem sustainability and to pollution control in northern rivers. First Nations and Metis aboriginal [native] peoples contributed significantly to the NRBS.
A Review and Evaluation of Water Quality and Quantity Models Used by the Northern River Basins Study
Title | A Review and Evaluation of Water Quality and Quantity Models Used by the Northern River Basins Study PDF eBook |
Author | Edward McCauley |
Publisher | The Study |
Pages | 124 |
Release | 1997 |
Genre | Nature |
ISBN |
Summarizes the major modelling projects undertaken to model water quality in the Peace, Athabasca, and Slave river systems. The first section describes the scope of the problem of modelling water quality in large complex systems that are relatively oligotrophic, located at relatively high altitudes, and experience highly seasonal environmental fluctuations. It also provides a summary of the models used to predict key water quality variables. Section 2 gives a general overview of the utility and shortcomings of water quality models, with the goal of establishing key criteria for assessing the successes of models developed by the Northern River Basins Study (NRBS). Section 3 summarizes key findings of the NRBS models and evaluates the results against criteria outlined in section 2. Section 4 presents a series of recommendations for modelling dissolved oxygen, transport and fate of contaminants, and distribution of contaminants in the food chain, along with strategic suggestions for future work.
Assessment and Validation of Dissolved Oxygen Modelling for the Northern River Basins Study (NRBS)
Title | Assessment and Validation of Dissolved Oxygen Modelling for the Northern River Basins Study (NRBS) PDF eBook |
Author | Patricia A. Chambers |
Publisher | |
Pages | 0 |
Release | 1996 |
Genre | Drinking water |
ISBN |