Transport of pollutants from nearby catchments to the Nagarjuna Sagar Dam

Abstract

Abstract. The understanding of the fate of the various pollutants and its mobility in the catchments of Nagarjun Sagar dam built on the Krishna river is of utmost important .As the Pedaguttu and Lambarpur catchments area has a proposed Uranium mining sites and Nagarjuna Sagar dam is the third largest man made dam which is the ultimate destination of all the rivulets in the Pedaguttu catchments. The concept of the distribution coefficient is invoked to understand the residence time of radionuclide on its nature. Expressions are derived to estimate the value of soil erosion constant using naturally occurring radionuclide. Based on 210 Pb profile in the sediment core, the sedimentary load of 0.24 gm m −2 y −1 was observed in the Pedaguttu and Lambarpur side of the Dam. The retention time and the transport coefficient of the pollutant were further obtained by using the appropriate modeling equation and was found 3776 and 2.7 × 10 −5 respectively. The comparative exercise of the retention time and transport coefficient was done with the other studied catchments of the world for the further validation of the result.

Spatial and Multivariate Analysis of Trace Elements in the Surface Water and Deep Sediments of Fresh Water Aquatic Ecosystem

“…The Atomic Mineral Division (AMD) identified new deposits of uranium at Lambapur and Peddagattu located in Pedda Adsarlapalli Mandal of Nalgonda district at a distance of about 135 km from Hyderabad andhra Pradesh state, India (Reddy et al, 2003). The deposits are known to exist at the unconformity contact between granitic basement and overlaying srisailam quartzite at Lambapur (Jha et al, 2012;Sartandel et al, 2009). There is the potential for this area to develop into a future uranium mining center (Verma et al, 2011).…”