Minimizing environmental impact whilst securing drinking water quantity and quality demands from a reservoir

Weber, Michael; Boehrer, Bertram; Rinke, Karsten

doi:10.1002/rra.3406

Cited by 10 publications

(7 citation statements)

References 30 publications

(41 reference statements)

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“…The only oxygen resupply to the water column occurs at the atmospheric air‐water interface. This simplification has proven valid when applied to temperate lakes (Weber et al., 2017; Weber et al., 2019).…”

Section: Methodsmentioning

confidence: 99%

“…The effect of optimizing the withdrawal from the multiple water intakes installed on the North and South Banks of Lake Kariba is qualitatively similar to that of a selective withdrawal system. Selective withdrawal is an often suggested solution to control the thermal and oxygen regime of rivers downstream of artificial reservoirs (Weber et al, 2017(Weber et al, , 2019. In the case of Lake Kariba, selective withdrawal could further reduce the water temperature during the stratification season.…”

Section: 1029/2020wr027465mentioning

confidence: 99%

See 1 more Smart Citation

Lake Modeling Reveals Management Opportunities for Improving Water Quality Downstream of Transboundary Tropical Dams

Calamita

Vanzo

Wehrli

et al. 2021

Water Resources Research

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Sustainable solutions to meet the growing food, water and energy needs of the human population are urgently required, especially in developing countries. Demand for hydropower and irrigation water threatens large river systems with potentially irreparable environmental effects (Best, 2019). More than 3,700 dams are proposed in tropical and subtropical countries (Winemiller et al., 2016;Zarfl et al., 2015). The African continent still has a largely untapped hydropower potential: Only 10% of this potential has been exploited, the lowest of any of the world's regions (The World Bank, 2015). The imminent growth of hydropower projects at low latitudes calls for an examination of the environmental effects of tropical dams (Anderson & Veilleux, 2016).Dams disrupt the continuum of rivers, altering natural hydrological regimes . By storing water, dams inevitably increase water residence time. As a consequence, thermal stratification and, subsequently, chemical stratification can develop in a reservoir (Friedl & Wüest, 2002). Hence, downstream water temperature and chemistry depend on the withdrawal depth, and dams thus modify not only downstream water quantity, but also water quality (e.g., Moran et al., 2018;Winton et al., 2019).The alteration of river water quality might have cascading effects and implications for the entire river ecosystem. Water temperature and oxygen concentration, for instance, are key parameters for aquatic species (Caissie, 2006). Water temperature affects growth, metabolism, reproduction, emergence, and the distribution of aquatic organisms, including insects and fish (e.g., Schulte, 2015;Vannote & Sweeney, 1980). Thus, water temperature changes may lead to changes in community composition or even to extinction of some species (Best, 2019). Dissolved oxygen (DO) concentration is also a key parameter for aquatic life (e.g., Kramer, 1987). Low oxygen concentrations alter lifecycle performance, growth capacity, reproductive success and disease vulnerability of fish, whilst hypoxia leads to higher fish mortality (Winemiller et al., 2008).

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Section: Methodsmentioning

confidence: 99%

Section: 1029/2020wr027465mentioning

confidence: 99%

Lake Modeling Reveals Management Opportunities for Improving Water Quality Downstream of Transboundary Tropical Dams

Calamita

Vanzo

Wehrli

et al. 2021

Water Resources Research

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“…The model, with its documentation and source code, is freely available at http://aed.see.uwa.edu.au/research/models/GLM. GLM has been widely applied to study both hydro-thermal dynamics and water quality in lakes and reservoirs worldwide (Bueche et al, 2017;Fenocchi et al, 2018;Mi et al, 2018;Weber et al, 2019). A community-effort to confront GLM with a data set of 32 very different lakes documented that GLM has a high transferability because it was able to simulate hydrodynamics in most of the systems with very high accuracy (Bruce et al, 2018).…”

Section: The Hydrodynamic Modelmentioning

confidence: 99%

Simulating thermal dynamics of the largest lake in the Caucasus region: The mountain Lake Sevan

Shikhani

Gevorgyan

et al. 2021

J Limnol

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Lake Sevan is the largest freshwater body in the Caucasus region, situated at an altitude of 1,900 m asl. While it is a major water resource in the whole region, Lake Sevan has received little attention in international limnological literature. Although recent studies pointed to algal blooms and negative impacts of climate change and eutrophication, the physical controls on thermal dynamics have not been characterized and model-based assessments of climate change impacts are lacking. We compiled a decade of historical data for meteorological conditions and temperature dynamics in Lake Sevan and used a one-dimensional hydrodynamic model (GLM 3.1) in order to study thermal structure, the stratification phenology and their meteorological drivers in this large mountain lake. We then evaluated the representativeness of meteorological data products covering almost 4 decades (EWEMBI-dataset: 1979-2016) for driving the model and found that these data are well suited to restore long term thermal dynamics in Lake Sevan. This established model setting allowed us to identify major changes in Lake Sevan’s stratification in response to changing meteorological conditions as expected from ongoing climate change. Our results point to a changing mixing type from dimictic to monomictic as Lake Sevan will experience prolonged summer stratification periods and more stable stratification. These projected changes in stratification must be included in long-term management perspectives as they will intensify water quality deteriorations like surface algal blooms or deep water anoxia.

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“…Manshadi et al [18] considered that inter-basin water diversion should meet the water quality requirements, and proposed a water quality evaluation method for inter-basin water diversion project based on the concepts of cooperative game and virtual water. Weber et al [19] discussed the water intake management of drinking water reservoirs, considering minimizing the environmental impact while ensuring the quantity and quality of drinking water in the reservoirs. Wang et al [20] studied the allocation of water resources based on water quantity, water quality, environmental and other factors in the river basin, and established the water quantity-water quality-environment coupling allocation model.…”

Section: Introductionmentioning

confidence: 99%

Standardization of Exchanged Water with Different Properties in China’s Water Rights Trading

Shen

et al. 2020

IJERPH

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Water rights trading is an effective way to optimize the allocation of water resources. However, the existing practice of water rights trading in China lacks any consideration of the practical value of the exchanged water. This deficiency may lead to disputes between transferor and transferee during the implementation of the water rights trading contract. This paper puts forward the concept of Standard Water (SW). First, getting the original value of exchanged water by the shadow price model based on input-output table; Second, based on the original value, building the economic profits or costs model to obtain the practical value of exchanged water; Third, establishing SW quantity measurement model according to the principle of rewarding excellence and punishing inferiority, so as to convert the water quantity of exchanged water into SW quantity. With the standardization method, this paper takes the water rights transaction between Dongyang City and Yiwu City in 2000 as an example to carry out case study, and provides policy recommendations. The results show that when the contract requires the provision of 49.999 million m3 water of Class I the quality, if the exchanged water quality provided is in Class II-V, the corresponding SW will be decreased to 48.699–37.399 million m3. The application of this research will be conducive to ensuring the fairness and durability of the water rights trading processes.

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Minimizing environmental impact whilst securing drinking water quantity and quality demands from a reservoir

Cited by 10 publications

References 30 publications

Lake Modeling Reveals Management Opportunities for Improving Water Quality Downstream of Transboundary Tropical Dams

Lake Modeling Reveals Management Opportunities for Improving Water Quality Downstream of Transboundary Tropical Dams

Simulating thermal dynamics of the largest lake in the Caucasus region: The mountain Lake Sevan

Standardization of Exchanged Water with Different Properties in China’s Water Rights Trading

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