Chemical characteristics of groundwater in parts of the Gambhir River basin, Bharatpur District, Rajasthan, India

Delineation of groundwater potential zones in Kakund watershed, Eastern Rajasthan, using remote sensing and GIS techniques

“…Deep aquifers, semiconfined to confined, occur below 50 m depth to the bed rock (CGWB, 1996). The general direction of flow of groundwater is from west to east (Umar and Absar, 2003). Depth to water table in the study area shows wide variations and fluctuations as well.…”

Study of Groundwater Salinity in Few Districts Adjoining River Ganga in Uttar Pradesh - A Case Study

“…In complex multi-layered alluvial formations, the shallowest phreatic aquifer is often most vulnerable to anthropogenic pollution and most susceptible to saline intrusion. In a groundwater system in an alluvium-covered area, clues may not be simple due to masking of chemical alteration trends by anthropogenic influences (Umar and Absar, 2003 The Ganga has by far the largest river basin in India, 15 th in Asia and 29 th in the world, draining as much as 861404 Sq.Km within the country, covering more than a quarter (26.2%) of India's geographical area. The basin has large surface water and groundwater resources and receives rainfall from both the northeast and southwest monsoons and the wettest months are July, August, September and October in that order and the annual flow in the basin is 468.7 billion m 3 , which accounts for 25.2% of India's total water resources (Joshi et al, 2009).Geography, geomorphology, climate and quaternary stratigraphy of the study area have been detailed by Ahamed et al, (2006) and Acharyya and Shah (2007).…”

Hydrogeochemistry of the Coxilha das Lombas Aquifer, Brazil

“…The chemical alteration of the meteoric water is influenced by several factors, such as interaction with solid phases, residence time of groundwater, and anthropogenic impacts (Umar and Absar 2003;Vitòria et al 2005). The abundance of major and minor ions is related mainly to rock/water interactions (Subba Rao 2001).…”

“…The chemical alteration of the meteoric water is influenced by several factors, such as interaction with solid phases, residence time of groundwater, and anthropogenic impacts (Umar and Absar 2003;Vitòria et al 2005). The abundance of major and minor ions is related mainly to rock/water interactions (Subba Rao 2001). Accord-R. Herlinger Jr ( ) · A. P. Viero Instituto de Geociências, Universidade Federal do Rio Grande do Sul, Caixa Postal 15.001, Porto Alegre, RS, Brazil e-mail: 00105509@ufrgs.br ing to Deutsch (1997), the most important rock/water interactions are adsorption and mineral precipitation/ dissolution.…”