Hydropower Impact on Water Quality: A Case Study on the Michalice Reservoir, Poland

Tomczyk, Paweł; Wiatkowski, Mirosław; Gruss, Łukasz; Buta, Bogna; Kasperek, R.; Glowski, R.; Rembielak, Kamil

doi:10.30638/eemj.2021.069

Cited by 10 publications

(7 citation statements)

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“…The presented results for UWQI are consistent with the results for reservoir hydropower plants: Michalice in Poland (Tomczyk et al, 2021), Bakun in Malaysia (Ling et al 2016) and Gongguoqiao in China (Luo et al 2019). In these cases, better water quality was noted, expressed by the water quality index below the hydrotechnical structures.…”

Section: Assessment Of the Physicochemical Quality Of Water Within A ...supporting

confidence: 87%

Analysis of the Physicochemical Quality of Water Within the Hydropower Plant on the Ślęza River in Wrocław, Poland

Tomczyk

2021

RoczOchrSrod

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The aim of the article was the analysis of the physicochemical quality of water within the hydropower plant on the Ślęza River in Wrocław (south-west Poland) in the context of the European Union's classification of water quality, as well as an assessment of the potential impact of hydropower plants on this quality. The study uses the results of monthly tests from three measurement points within the hydropower plant on the Ślęza River in the city of Wrocław (points upstream and downstream the hydropower plant and the reference point), from the period June 2018 to May 2020. The analyses covered 10 physicochemical parameters, i.e.: pH, electrical conductivity (EC), water temperature, turbidity, NH4-N, NO3-N, NO2-N, total phosphorus, dissolved oxygen and BOD5. The conducted analysis showed that the hydropower plant has no clear influence on the physicochemical quality of the water in the Ślęza River, other interactions present in the catchment area are more important. From the effects visible in the results, a decrease in the amplitudes of water temperature downstream the hydropower plant compared to the other points was noted, as well as a lower median of its value (statistically significant changes). An additional noticeable effect was the increase in water oxygenation below the damming, but it was not statistically significant. It has been shown that the physicochemical condition of water at the tested points does not meet the assumed standards for 8 out of 9 parameters (except for water temperature). The largest exceedances of the limit values concerned NO2-N (up to 923% of the norm), and the most consistent, almost constantly occurring – EC (23 out of 24 months). The reason for the high NO2-N content was most probably surface runoff from the fields and the re-suspension of sediments rich in nutrients, while in the case of EC, its high values result from the specificity of the catchment area.

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Section: Assessment Of the Physicochemical Quality Of Water Within A ...supporting

confidence: 87%

Analysis of the Physicochemical Quality of Water Within the Hydropower Plant on the Ślęza River in Wrocław, Poland

Tomczyk

2021

RoczOchrSrod

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“…This fact has already been mentioned in the literature (Athayde et al, 2019) and corroborates with the understanding of residents in Africa (Gyasi et al, 2018) and China (Rousseau, 2020) after the construction of HEDs. In other countries, studies show that HEDs negatively impact water quality in several parameters both downstream and upstream of the dam (Ling et al, 2016(Ling et al, , 2017Tomczyk et al, 2021) and the same is found in the Tocantins River (Oliveira, de et al, 2020).…”

Section: Health Issues (Mercury Diseases)mentioning

confidence: 67%

Indications that fishers perceive socio-environmental problems related to hydroelectric plants in the Tocantins river, Brazil

Lima,

Freitas,

Barbosa

et al. 2024

Braz. J. Hea. Rev.

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Hydroelectric dams (HEDs) cause significant socio-environmental damage such as reduced fish diversity, population displacement and health problems. The fishers have extensive local ecological knowledge that can be used to improve understanding of the impacts of HEDs. Therefore, the objective of this study was to verify and evaluate the perceptions of fishers about the impacts caused by the HEDs in the Tocantins River. For this, 25 fishers were interviewed using a questionnaire with 22 questions. Data analyses were performed considering descriptive analysis of the responses. There was convergence in the responses of fishers who perceived the decrease in fish diversity after the construction of the HEDs, including fish of commercial interest, which is linked to a decrease in income and decreased food security for these families. In addition, the fishers noted symptoms that may be a consequence of mercury contamination, and diarrhea as a possible consequence of decreased water quality. Despite all these socio-environmental losses, the fishers report a lack of prior consultation, and low representativeness and transparency in the decision-making process that preceded the construction of HEDs. In general, the fishers perceived themselves as being strongly affected from the socio-environmental point of view and do not cite any benefits offered to the community from these projects.

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“…C4.2-Impact on river water quality [109][110][111][112][113][114] The analyses concern 6 small reservoirs in Europe and 1 very large reservoir in South America. In addition, publications [112,113] review based on a large dataset.…”

Section: Research Papers Spectrum Of Analysis Benefits Diagnosed Risk...mentioning

confidence: 99%

“…The impact of reservoirs on water quality in the watercourse downstream of the dam cross-section is relatively straightforward to determine in field studies; however, it is impossible to establish a universal pattern of impact due to the diversity in the specifics of each site [109][110][111][112][113][114]. In terms of halting the downstream transport of biogenic compounds and heavy metals, the impact of the reservoirs in the cases analysed can be described as positive or at least neutral [109,110,112,120].…”

Section: N/amentioning

confidence: 99%

Impounding Reservoirs, Benefits and Risks: A Review of Environmental and Technical Aspects of Construction and Operation

Połomski,

Wiatkowski

2023

Sustainability

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The operation of multi-functional reservoirs, together with their benefits and risks, is a complex issue. The scientific and social discussion has been burgeoning recently, and all the more so as no planning and technological solutions for the realisation of storage reservoirs have yet been worked out that could represent a universal approach, assuming ecologically and socially sustainable operations, maximising economic returns and supporting the development of the region concerned. Although the creation of each reservoir facility involves different engineering and environmental considerations, this article attempts to isolate the key benefits of impounding reservoirs and to summarise the risks associated with their operation, considering flood protection, retention, environmental and social aspects and water quality. Based on a review of the scientific literature for each of these aspects, various sub-categories representing intensively developing sectors of research were distinguished, and the published results were used to formulate a register taking into account the spectrum of impact of a given factor and a proposal for remedial action. As a basic conclusion of this review, it can be pointed out that the current development of scientific research, technological progress in hydrotechnical engineering and information technology, as well as advanced data analysis capabilities, provide the basis for developing sustainable solutions to avoid or mitigate the negative impact of all the identified risks. In addition, remedial measures in the catchment area and the reservoir should be taken on board to counteract the negative effects of reservoirs. The results presented can be a valuable source of information for institutions responsible for the planning and implementation of investments in the construction of multi-functional reservoirs.

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Hydropower Impact on Water Quality: A Case Study on the Michalice Reservoir, Poland

Cited by 10 publications

References 0 publications

Analysis of the Physicochemical Quality of Water Within the Hydropower Plant on the Ślęza River in Wrocław, Poland

Analysis of the Physicochemical Quality of Water Within the Hydropower Plant on the Ślęza River in Wrocław, Poland

Indications that fishers perceive socio-environmental problems related to hydroelectric plants in the Tocantins river, Brazil

Impounding Reservoirs, Benefits and Risks: A Review of Environmental and Technical Aspects of Construction and Operation

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