Assessment of Physicochemical Properties and Water Quality of the Lom River (NW Bulgaria)

Radeva, Kalina; Seymenov, Kalin

doi:10.1007/978-3-030-28191-5_11

Cited by 4 publications

(3 citation statements)

References 12 publications

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“…The water quality integral indicator applied in this study is the composite WQI developed by the CCME [53]. Since 2006 it has been recommended by the United Nations Environment Programme (UNEP) for application in assessing surface water quality [54]. The CCME-WQI is based on three factors characterizing the anthropogenic impact on the water quality:…”

Section: Water Quality Indexmentioning

confidence: 99%

Principal Component Analysis and the Water Quality Index—A Powerful Tool for Surface Water Quality Assessment: A Case Study on Struma River Catchment, Bulgaria

Benkov¹,

Varbanov

Venelinov

et al. 2023

Water

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The water quality assessment of the surface water bodies (SWBs) is one of the major tasks of environmental authorities dealing with water management. The present study proposes a water quality assessment scheme for the investigation of the surface waters’ physicochemical status changes and the identification of significant anthropogenic pressures. It is designed to extract valuable knowledge from the Water Frame Directive (WFD) mandatory monitoring datasets. The water quality assessment scheme is based on the Canadian Council of Ministers of the Environment water quality index (CCME-WQI), trend analysis of estimated WQI values, and Principal Component Analysis (PCA) using calculated excursions during the determination of WQI values. The combination of the abovementioned techniques preserves their benefits and additionally provides important information for water management by revealing the latent factors controlling water quality, taking into account the type of the SWB. The results enable the identification of the anthropogenic impact on SWBs and the type of the corresponding anthropogenic pressure, prioritization and monitoring restoration measures, and optimization of conducted monitoring programs to reflect significant anthropogenic pressures. The proposed simple and reliable assessment scheme is flexible to introducing additional water quality indicators (hydrological, biological, specific pollutants, etc.), which could lead to a more comprehensive surface water quality assessment.

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Section: Water Quality Indexmentioning

confidence: 99%

Principal Component Analysis and the Water Quality Index—A Powerful Tool for Surface Water Quality Assessment: A Case Study on Struma River Catchment, Bulgaria

Benkov¹,

Varbanov

Venelinov

et al. 2023

Water

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“…It is characterized by an intermittent streamflow. The average annual discharge is 4.20 m 3 /s and varies between 1.6 and 6.18 m 3 /s over the years 2000(Radeva, 2022.…”

Section: Study Areamentioning

confidence: 99%

GIS-based landslide and rockfall susceptibility zoning in Chepelarska River Basin (Western Rhodope Mountains, Bulgaria)

Tcherkezova,

Zareva,

Yordanov

2023

Eng. Geol. and Hydrogeol.

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Landslides and rockfalls are one of the most widespread hazardous phenomena in the Western Rhodopes, Bulgaria. These mass-wasting types occur together with other dangerous phenomena such as river bank erosion and soil degradation, and can cause a lot of infrastructural damage. The main purpose of this paper is to perform GIS-based landslide and rockfall susceptibility zoning and to elaborate susceptibility maps at a scale of а river basin on the example of the Chepelarska River Basin (RB). In order to achieve this goal, nine causal factors have been selected, and map of landslides and field study have been used. These factors were reclassified using histograms and the natural breaks method. In addition, the frequency ratio values of each class have been calculated. To obtain the causal factors impact on sliding and rockfalls, the weights and weighted averages sum of their classes were calculated and analysed. For the complex analysis and elaboration of mass-wasting susceptibility maps, weighted overlay and weighted sum methods have been applied. The obtained results show that from the total 38 landslides and rockfalls in the study area, 26 of them fall into the very high susceptibility zone applying a weighted overlay, and 25 of them fall into the same zone using the weighted sum method. These results and the used methods could be used for other small and medium-sized river basins.

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“…Various studies have applied this approach to different regions, including the Nile Delta in Egypt [6] and the Brazilian Atlantic Forest [7]. Indexes that reflect the overall water quality, the Water Quality Index (WQI) [8][9][10], the comprehensive pollution index, the organic pollution index, the trace metal pollution index, the eutrophication index [1], the enrichment factor, and the pollution load index [11], remote sensing [12], and others. The specific tools used to assess river water quality will depend on the assessment's specific goals and objectives and the available resources.…”

Section: Introductionmentioning

confidence: 99%

Surface water quality assessment in the Bach Dang river basin, Vietnam: using water quality index and geographical information system methods

Nguyen,

Tran,

Tap Van

et al. 2023

Environ. Res. Commun.

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The study evaluates the surface water quality of the Bach Dang river basin. During the rainy season, the temperature, pH, EC, BOD5, COD, coliforms, ammonium and phosphate values were 27–37 oC, 6.6–8.9, 300–2200 μS/cm, 5–25 mg/L, 5–26 mg/L, 0–3000 MPN/100mL, below 0.01 mg/L, and 0.02 mg/L, respective. During the rainy and dry seasons, Zn, Pb, Cr, As, Fe and Mn levels were below drinking water limits. In the rainy season, the water quality index varied from 76 to 91, signifying medium to excellent water quality. The most outstanding water quality sites were the QN12, QN18, and QN22. During the dry season, most areas had moderate to excellent (WQI values between 61 and 93), except for QN01, QN03, QN04, QN05, QN06, QN07, QN11, QN16, QN17, QN19, and QN23, where it dropped to moderate (61–73). The temperatures were greater and higher EC values in the southeast. The DO concentrations were higher in the northwest and southeast in both seasons. The southern and southeastern regions exhibited more excellent COD and BOD5 values than the western, southwest, north, and northeast regions. The ammonium concentrations were higher in the southeast. During the dry season, the phosphate levels exceeded the permissible limit in the west, southeast, east, and northeast. Coliforms were below acceptable in both seasons, with greater levels in the northwest and northeast during the dry season. In addition, the Zn and Pb are favorably associated with the As, Mn, ammonium and phosphate in the rainy season. The COD positively correlated with the coliforms and BOD5. In the dry season, the pH inversely correlated with the Pb and Fe positively. The ammonium correlated negatively with the DO and positively with the phosphates. The pH negatively connected with the alkalinity, while the As positively correlated with the BOD5 and COD.

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Assessment of Physicochemical Properties and Water Quality of the Lom River (NW Bulgaria)

Cited by 4 publications

References 12 publications

Principal Component Analysis and the Water Quality Index—A Powerful Tool for Surface Water Quality Assessment: A Case Study on Struma River Catchment, Bulgaria

Principal Component Analysis and the Water Quality Index—A Powerful Tool for Surface Water Quality Assessment: A Case Study on Struma River Catchment, Bulgaria

GIS-based landslide and rockfall susceptibility zoning in Chepelarska River Basin (Western Rhodope Mountains, Bulgaria)

Surface water quality assessment in the Bach Dang river basin, Vietnam: using water quality index and geographical information system methods

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