The impact of agricultural pollutants in six drinking water reservoirs

Tanık, Ayşegül; Baykal, B. Beler; Gonenc, I. E.

doi:10.2166/wst.1999.0074

Cited by 22 publications

(15 citation statements)

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“…To detect the major causes of surface water pollution, the Nilüfer stream basin was divided into 4 sub-basins and the border of sub-basins were detected by using topographical maps scaled 1/100 000. Characteristics of land cover in subbasins were determined with the help of Geographic Information Systems (GIS) : , Tanık, A. et al, 1999 as shown in Figure 2 and pollution loads were estimated from diverse sources. The flows of each subsystem were then further divided by point diffuse pollution loading assessments.…”

Section: Procedures For Materials Flow Analysismentioning

confidence: 99%

“…Pollution load coming from diffuse sources was estimated by multiplying export coefficients with the area of land use shown in Table I. Phosphorus and nitrogen export coefficients for land use are selected from the literature on similar basins within the Marmara region (Öktem, 1996;Tanık et al, 1999). Due to constraints in data availability in atmospheric measurements, the annual phosphorus and nitrogen loads could not be calculated.…”

Section: Procedures For Materials Flow Analysismentioning

confidence: 99%

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Monitoring of water quality and assessment of organic pollution load in the nilüfer stream, Turkey

Karaer

Küçükballi

2006

Environ Monit Assess

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This article presents the results of an investigation carried out on the Nilüfer stream located in the southern part of Marmara region in Turkey 1999-2003. It evaluates water quality and proposes local requirements to prevent aquatic pollution problems. The study took into account the seasonal influences of point and non-point discharges on the organic pollution levels of the stream. The results indicated sub-standard water quality in most parts of the stream. Untreated domestic wastewaters, industrial discharges and agricultural activities contributed to the total annual organic loading. This study reveals the importance of construction, operation, maintenance and legislation of wastewater collection and treatment programmes, as well as the need for strict control of point and non-point nutrient loads for the preservation of the Nilüfer stream's water quality. Appropriate strategies for the control of point and non-point pollution sources, amendments and enforcement of legislation should be developed.

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Section: Procedures For Materials Flow Analysismentioning

confidence: 99%

Section: Procedures For Materials Flow Analysismentioning

confidence: 99%

Monitoring of water quality and assessment of organic pollution load in the nilüfer stream, Turkey

Karaer

Küçükballi

2006

Environ Monit Assess

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“…Sediments can accumulate behind dams, which results in the siltation of water reservoirs (Downing et al, 2008;Thothong et al, 2011). Suspended organic matter also contributes to water quality degradation (Tanik et al, 1999) and plays a major role in nutrient biogeochemical cycles (Quinton et al, 2010). It also constitutes a potential vector for various contaminants such as metals, polycyclic aromatic hydrocarbons or faecal bacteria (Ribolzi et al, 2010;Gateuille et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Sources and export of particle-borne organic matter during a monsoon flood in a catchment of northern Laos

et al. 2015

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Abstract. The yields of the tropical rivers of Southeast Asia supply large quantities of carbon to the ocean. The origin and dynamics of particulate organic matter were studied in the Houay Xon River catchment located in northern Laos during the first erosive flood of the rainy season in May 2012. This cultivated catchment is equipped with three successive gauging stations draining areas ranging between 0.2 and 11.6 km 2 on the main stem of the permanent stream, and two additional stations draining 0.6 ha hillslopes. In addition, the sequential monitoring of rainwater, overland flow and suspended organic matter compositions was conducted at the 1 m 2 plot scale during a storm. The composition of particulate organic matter (total organic carbon and total nitrogen concentrations, δ 13 C and δ 15 N) was determined for suspended sediment, soil surface (top 2 cm) and soil subsurface (gullies and riverbanks) samples collected in the catchment (n = 57, 65 and 11, respectively). Hydrograph separation of event water was achieved using water electric conductivity and δ 18 O measurements for rainfall, overland flow and river water base flow (n = 9, 30 and 57, respectively). The composition of particulate organic matter indicates that upstream suspended sediments mainly originated from cultivated soils labelled by their C 3 vegetation cover (upland rice, fallow vegetation and teak plantations). In contrast, channel banks characterized by C 4 vegetation (Napier grass) supplied significant quantities of sediment to the river during the flood rising stage at the upstream station as well as in downstream river sections. The highest runoff coefficient (11.7 %), sediment specific yield (433 kg ha −1 ), total organic carbon specific yield (8.3 kg C ha −1 ) and overland flow contribution (78-100 %) were found downstream of reforested areas planted with teaks. Swamps located along the main stream acted as sediment filters and controlled the composition of suspended organic matter. Total organic carbon specific yields were particularly high because they occurred during the first erosive storm of the rainy season, just after the period of slash-andburn operations in the catchment.

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“…(Vegetation and agriculture) TN and TP loads = Land utilization area * Transport (1) coefficients The TN and TP loads resulting from small settlements within the catchment basin of MKP Stream with a population below 2000 were calculated by multiplying daily pollution load unit coefficients per person [20,22] by population values [23]. The TN and TP loads stemming from small settlements were given by the Equation (2) below:…”

Section: Calculation Of Pollution Loadsmentioning

confidence: 99%

Research on the Non-Point Pollution Loads in the Lake Uluabat Basin

Kâti̇p¹,

Karaer

2013

JEP

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Lake Uluabat, having an international significance and subject to the Ramsar Convention, is fed by the basin of Mustafakemalpaşa Stream which runs through fertile lands utilized for livestock breeding and agriculture. In this study, total amount of nitrogen (TN) and phosphorus (TP) loads of non-point pollutants (agriculture, livestock breeding, vegetation, surface runoff and small settlements) was calculated. It was found out that most intensive pollution load stemmed from livestock breeding which causes dispersion of 13653.57 tons·year −1 of TN and 3224.45 tons·year −1 of TP into the Lake Uluabat. Additionally, seasonal changes in concentration of TN and TP were observed during the period of [2008][2009] in Lake Uluabat. It was concluded that the rise of agricultural activities in summer months was the reason underlying the increase in pollution during the months in question.

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The impact of agricultural pollutants in six drinking water reservoirs

Cited by 22 publications

References 0 publications

Monitoring of water quality and assessment of organic pollution load in the nilüfer stream, Turkey

Monitoring of water quality and assessment of organic pollution load in the nilüfer stream, Turkey

Sources and export of particle-borne organic matter during a monsoon flood in a catchment of northern Laos

Research on the Non-Point Pollution Loads in the Lake Uluabat Basin

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