Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.5194/piahs-377-25-2018 |
Water quality modelling of an impacted semi-arid catchment using flow data from the WEAP model | |
Slaughter, Andrew R.; Mantel, Sukhmani K. | |
通讯作者 | Slaughter, Andrew R. |
会议名称 | International-Association-of-Hydrological-Sciences Scientific Assembly |
会议日期 | JUL 10-14, 2017 |
会议地点 | Port Elizabeth, SOUTH AFRICA |
英文摘要 | The continuous decline in water quality in many regions is forcing a shift from quantity-based water resources management to a greater emphasis on water quality management. Water quality models can act as invaluable tools as they facilitate a conceptual understanding of processes affecting water quality and can be used to investigate the water quality consequences of management scenarios. In South Africa, the Water Quality Systems Assessment Model (WQSAM) was developed as a management-focussed water quality model that is relatively simple to be able to utilise the small amount of available observed data. Importantly, WQSAM explicitly links to systems (yield) models routinely used in water resources management in South Africa by using their flow output to drive water quality simulations. Although WQSAM has been shown to be able to represent the variability of water quality in South African rivers, its focus on management from a South African perspective limits its use to within southern African regions for which specific systems model setups exist. Facilitating the use of WQSAM within catchments outside of southern Africa and within catchments for which these systems model setups to not exist would require WQSAM to be able to link to a simple-to-use and internationallyapplied systems model. One such systems model is the Water Evaluation and Planning (WEAP) model, which incorporates a rainfall-runoff component (natural hydrology), and reservoir storage, return flows and abstractions (systems modelling), but within which water quality modelling facilities are rudimentary. The aims of the current study were therefore to: (1) adapt the WQSAM model to be able to use as input the flow outputs of the WEAP model and; (2) provide an initial assessment of how successful this linkage was by application of the WEAP and WQSAM models to the Buffalo River for historical conditions; a small, semi-arid and impacted catchment in the Eastern Cape of South Africa. The simulations of the two models were compared to the available observed data, with the initial focus within WQSAM on a simulation of instream total dissolved solids (TDS) and nutrient concentrations. The WEAP model was able to adequately simulate flow in the Buffalo River catchment, with consideration of human inputs and outputs. WQSAM was adapted to successfully take as input the flow output of the WEAP model, and the simulations of nutrients by WQSAM provided a good representation of the variability of observed nutrient concentrations in the catchment. This study showed that the WQSAM model is able to accept flow inputs from the WEAP model, and that this approach is able to provide satisfactory estimates of both flow and water quality for a small, semi-arid and impacted catchment. It is hoped that this research will encourage the application of WQSAM to an increased number of catchments within southern Africa and beyond. |
来源出版物 | WATER QUALITY AND SEDIMENT TRANSPORT ISSUES IN SURFACE WATER |
ISSN | 2199-899X |
出版年 | 2018 |
卷号 | 377 |
页码 | 25-33 |
EISBN | ***************** |
出版者 | COPERNICUS GESELLSCHAFT MBH |
类型 | Proceedings Paper |
语种 | 英语 |
国家 | South Africa |
收录类别 | CPCI-S |
WOS记录号 | WOS:000470011500004 |
WOS关键词 | RESOURCES MANAGEMENT ; FUTURE CLIMATE ; SCENARIOS ; CONTEXT |
WOS类目 | Environmental Sciences ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Water Resources |
资源类型 | 会议论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/308084 |
作者单位 | Rhodes Univ, Inst Water Res, Grahamstown, South Africa |
推荐引用方式 GB/T 7714 | Slaughter, Andrew R.,Mantel, Sukhmani K.. Water quality modelling of an impacted semi-arid catchment using flow data from the WEAP model[C]:COPERNICUS GESELLSCHAFT MBH,2018:25-33. |
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