Environmental System Analysis for River Pollution Control

Diwakar, Jasmine; Thakur, Jay Krishna

doi:10.1007/s11270-012-1102-z

Cited by 22 publications

(15 citation statements)

References 24 publications

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“…It is a measure of degree of distribution of stream network (Mesa 2006) and influences the landscape morphometry and control over the ''peakedness'' of the runoff (Chorley 1969). The Rb value ranges from 3.0 to 5.0 for networks formed on homogeneous rocks when the influences of geologic structures on the stream network is negligible (Strahler 1964;Verstappen 1995;Nag 1998;Vittala et al 2004) and values higher than 10 where structural controls play dominant role with elongate basins (Mekel 1970;Chow et al 1988). The Rb values reflect shape of basin (Verstappen 1983;Ghosh and (Morisawa 1985).…”

Section: Bifurcation Ratio (Rb)mentioning

confidence: 99%

Assessment of morphometric characteristics of Chakrar watershed in Madhya Pradesh India using geospatial technique

Soni

2016

Appl Water Sci

103

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The quantitative analysis of the watershed is important for the quantification of the channel network and to understand its geo-hydrological behaviour. Assessment of drainage network and their relative parameters have been quantitatively carried out for the Chakrar watershed of Madhya Pradesh, India, to understand the prevailing geological variation, topographic information and structural setup of the watershed and their interrelationship. Remote Sensing and Geographical Information System (GIS) has been used for the delineation and calculation of the morphometric parameters of the watershed. The Chakrar watershed is sprawled over an area of 415 km 2 with dendritic, parallel and trellis drainage pattern. It is sub-divided into nine sub-watersheds. The study area is designated as sixth-order basin and lower and middle order streams mostly dominate the basin with the drainage density value of 2.46 km/km 2 which exhibits gentle to steep slope terrain, medium dense vegetation, and less permeable with medium precipitation. The mean bifurcation value of the basin is 4.16 and value of nine sub-watersheds varies from 2.83 to 4.44 which reveals drainage networks formed on homogeneous rocks when the influences of geologic structures on the stream network is negligible. Form factor, circularity ratio and elongation ratio indicate an elongated basin shape having less prone to flood, lower erosion and sediment transport capacities. The results from the morphometric assessment of the watershed are important in water resources evaluation and its management and for the selection of recharge structure in the area for future water management.

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Section: Bifurcation Ratio (Rb)mentioning

confidence: 99%

Assessment of morphometric characteristics of Chakrar watershed in Madhya Pradesh India using geospatial technique

Soni

2016

Appl Water Sci

103

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“…The available water resources are inadequate to meet water demands. In addition, the high cost of exploration makes it difficult to locate the groundwater pockets cost-effectively (Diwakar and Thakur 2012). Mapping and monitoring of existing groundwater assets and estimation of future resources are major issues in hard-rock areas (Rao andJugran 2003, Singh andSingh 2009).…”

Section: Introductionmentioning

confidence: 99%

Delineating groundwater potential zones in a hard-rock terrain using geospatial tool

Singh

Thakur

Kumar³

2013

Hydrological Sciences Journal

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Geospatial techniques have become one of the leading tools in the field of natural sciences for assessment, monitoring and management of natural resources, particularly in groundwater research. The paper discusses the demarcation and assessment of groundwater potential zones using geospatial techniques in the Deccan Volcanic Province of Maharashtra, India, using multi-criteria analyses. The study incorporates integration of thematic information (geomorphology, lithology, drainage density, slope and lineaments) in a GIS environment in order to identify groundwater potential zones. The methodology adopted can be used as a rapid assessment tool in groundwater exploration and is helpful in predictive groundwater resource management. Multi-criteria evaluation techniques were used to integrate all the thematic layers. Individual themes and their corresponding categories were assigned a knowledge base ranking from 1 to 5, depending on their importance for groundwater potential. Using the Raster calculator tool in Arc GIS software, all thematic maps were integrated to produce a composite groundwater potential map of the study area. The identified groundwater potential zones were classified into four classes, from excellent to poor. The generated groundwater potential zones were validated with field checks and borewell/dugwell yield data, and showed consistency with the observations. Key words groundwater potential zones; hard-rock terrain; remote sensing; GIS; India Délimitation des zonesde prospection d'eaux souterrainesen zone de socleà l'aided'outils géospatiaux Résumé Les techniques géospatiales sont devenues un outil de première importance dans les sciences naturelles pour l'évaluation, le suivi et la gestion des ressources naturelles, en particulier pour la recherche des eaux souterraines. Cet article traite de la délimitation et de l'évaluation des zones de prospection des eaux souterraines dans la province volcanique du Deccan (Maharashtra, Inde) utilisant des techniques géospatiales, et faisant appel à des analyses multicritères. L'étude comprend l'intégration d'informations thématiques (géomorphologie, lithologie, densité de drainage, pente et linéaments) dans un environnement SIG afin d'identifier les zones de prospection. La méthodologie adoptée peut être utilisée comme outil d'évaluation rapide pour l'exploration des eaux souterraines et est également utile pour la gestion prédictive des ressources en eaux souterraines. Des techniques d'évaluation multicritère ont été utilisées pour intégrer les différentes couches thématiques. Une notation de 1 à 5 a été attribuée par une base de connaissances aux différents thèmes et à leurs catégories en fonction de leur aptitude à favoriser la présence d'eau souterraine, et leurs pondérations ont été calculées. Grâce à l'utilisation de l'outil de calcul « Raster » du logiciel ArcGIS, toutes les cartes thématiques peuvent être intégrées pour produire une carte composite des eaux souterraines potentielles de la zone d'étude. Les zones de prospection identifiées o...

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“…Water supplies may contain phosphates derived from natural contact with minerals or through pollution or application of fertilizers, sewage and industrial wastes. Groundwater are, therefore, likely to have higher phosphate concentration (DeZuan 1997).…”

Section: Resultsmentioning

confidence: 99%

“…Most of the hydrogeochemical studies of groundwater are focused in the Terai region of Nepal (Bhattacharya et al 2003;Diwakar et al 2014;Gurung et al 2005;Khadka et al 2004;Shrestha and Shrestha 2004;Williams et al 2004). Less attention has been given to the hydrogeochemical studies of groundwater in the Bhaktapur district.…”

Section: Introductionmentioning

confidence: 99%

Hydrogeochemical evaluation of groundwater of Bhaktapur Municipality, Nepal

Thakur¹,

Diwakar

Singh

2015

Environ Earth Sci

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The present study aims to evaluate groundwater hydrogeochemistry of Bhaktapur Municipality, Nepal with respect to water types, chemical elements and their statistical variability. Samples were collected in pre-monsoon (April-June), monsoon (July-August) and post-monsoon (October-November) seasons in 2007. Laboratory analysis of samples revealed inter-seasonal variability, primarily attributed to hydrogeochemical processes. All or most of the samples exceeded the World Health Organization (WHO) guideline value (GLV) for iron, conductivity and turbidity, while none of the samples exceeded WHO GLV for hardness and arsenic with minor fraction exceeding GLV for chloride content. Higher ammonia content in well water and highest phosphate concentration occurred for stone spout in pre-monsoon season. Principle component analysis highlighted three principle components while the dendrogram divided the sampling sites into four and two clusters, respectively, for well water and stone spout water sampling sites. Saturation index computed through WATEQ4F model revealed that ferrihydrite, siderite, strengite and vivianite minerals were in under-saturated state, while goethite was in supersaturated condition for each type of samples (well water and stone spout water) in both pre-and post-monsoon seasons depicting their tendency to precipitate. High degree of supersaturation in goethite mineral indicated response to temperature gradient of the reactions, while under-saturation for other minerals indicated the effect of dilution.

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Environmental System Analysis for River Pollution Control

Cited by 22 publications

References 24 publications

Assessment of morphometric characteristics of Chakrar watershed in Madhya Pradesh India using geospatial technique

Assessment of morphometric characteristics of Chakrar watershed in Madhya Pradesh India using geospatial technique

Delineating groundwater potential zones in a hard-rock terrain using geospatial tool

Hydrogeochemical evaluation of groundwater of Bhaktapur Municipality, Nepal

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