Dependence of Selected Water Quality Parameters on Flow Rates in River Profiles in the Czech Republic

Hanslík, Eduard; Marešová, Diana; Juranová, Eva; Vlnas, Radek

doi:10.13044/j.sdewes.2016.04.0011

Cited by 16 publications

(14 citation statements)

References 8 publications

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“…Analysis showed that the concentrations increase with the increase of water flow but the dependence between them is nonlinear. Such behavior is typical for diffuse pollution of nitrogen [2,21]. …”

Section: Resultsmentioning

confidence: 89%

Modelling of the Effect of Drained Peat Soils to Water Quality Using MACRO and SOILN Models

et al. 2018

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Abstract:Investigations have indicated that in addition to traditional sources, drained peat soils can be considered as a significant source of nitrogen in Estonia. This changes the measures to improve water quality in rivers. At present modelling of nitrogen in rivers has been concentrated on influence of agricultural activity. However, drained peat can increase nitrogen concentrations even without fertilization and farming activities. This investigation describes the attempt to model water quality in the watershed with large share of drained peat soils. A good alignment between measured and modelled nitrate concentrations using the MACRO and the SOILN for MACRO models was shown.

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Section: Resultsmentioning

confidence: 89%

Modelling of the Effect of Drained Peat Soils to Water Quality Using MACRO and SOILN Models

et al. 2018

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“…Studies have even found elevated concentrations of uranium in plants and cattle occurring in the area [36]. The river has only deteriorated further due to the decrease in flow with the recent drought in South Africa, Hanslik et al [37] indicated that in the presence of point source pollution decreased flow often results in increased eutrophication, algal blooms and decreased dissolved oxygen. Despite its degraded condition it is still utilised by both the people of Bekkersdal [38] and as a tourist site for recreational and professional angling [39].…”

Section: Use Of the Wonderfonteinspruit (Inclusive Of Donaldson Dam)mentioning

confidence: 99%

Past, Present and Future use of Municipal Water and Freshwater Resources of the Bekkersdal Community, Westonaria, South Africa

Liefferink¹,

Eeden²,

Wepener³

2017

J. sustain. dev. energy water environ. syst.

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Water is a human right which is recognised globally, with an increasing focus being placed on the ethical considerations of water use. The paper focuses on investigating access and perceptions surrounding this basic need in the Bekkersdal community and the Wonderfonteinspruit, in the Gauteng Province, South Africa. It is hypothesised that several challenges exist both internally and externally in the process of ensuring the right to water in Bekkersdal, from both an environmental and service provision perspective. Through the use of a questionnaire conducted with a statistically representative group from the Bekkersdal community, the following issues were investigated: current water use of municipal and river water, challenges regarding water availability and quality, perceptions regarding the state of the Wonderfonteinspruit and future water use wants and needs. The results indicate a strong reliance on municipal water complicated with water service delivery issues, which resulted in 10% of the residents making use of the polluted Wonderfonteinspruit on a regular basis. Furthermore, the need for solutions to water supply and availability solutions should be developed in conjunction with community members. This research represents some of the first steps that need to be taken to do so.

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“…For instance, in [21], the interactions between DO and flow in the river Waihou catchment, New Zealand, were evaluated with the purpose of supplying minimum flow and flow variability requirements for instream ecology, in order to provide a more holistic framework for defining flow requirements in the catchment area. In [22], the relationship between some water quality parameters, including DO, and flow rates at several sites in the Vltava River catchment in the Czech Republic were evaluated. The results indicated that concentrations of nitrates, suspended solids, and dissolved oxygen are in direct relation to flow rate.…”

Section: Introductionmentioning

confidence: 99%

A Time Series Model Comparison for Monitoring and Forecasting Water Quality Variables

Monteiro

Costa

2018

Hydrology

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Abstract:The monitoring and prediction of water quality parameters are important tasks in the management of water resources. In this work, the performances of time series statistical models were evaluated to predict and forecast the dissolved oxygen (DO) concentration in several monitoring sites located along the main river Vouga, in Portugal, during the period from January 2002 to May 2015. The models being compared are a regression model with correlated errors and a state-space model, which can be seen as a calibration model. Both models allow the incorporation of water quality variables, such as time correlation or seasonality. Results show that, for the DO variable, the calibration model outperforms the regression model for sample modeling, that is, for a short-term forecast, while the regression model with correlated errors has a better performance for the forecasting h-steps ahead framework. So, the calibration model is more useful for water monitoring using an online or real-time procedure, while the regression model with correlated errors can be applied in order to forecast over a longer period of time.

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Dependence of Selected Water Quality Parameters on Flow Rates in River Profiles in the Czech Republic

Cited by 16 publications

References 8 publications

Modelling of the Effect of Drained Peat Soils to Water Quality Using MACRO and SOILN Models

Modelling of the Effect of Drained Peat Soils to Water Quality Using MACRO and SOILN Models

Past, Present and Future use of Municipal Water and Freshwater Resources of the Bekkersdal Community, Westonaria, South Africa

A Time Series Model Comparison for Monitoring and Forecasting Water Quality Variables

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