Informatics Publishing Limited

Ch. Satyanarayana ¹, S. Ramakrishna Rao ², Kaizar Hossain ³

Affiliations
1 Deptt. of Marine Engg., College of Engineering, Andhra University, Visakhapatnam-530 003, A.P., IN
2 Deptt. of Civil Engg., College of Engineering, Andhra University, Visakhapatnam-530 003, A.P., IN
3 Dept. of Environmental Studies, GITAM Institution of Science, GITAM University, Visakhapatnam-530 045, A.P., IN

Abstract

Assessment of water quality is important as water is used for domestic, agricultural and also industrial purposes. The coastal stretch of Andhra Pradesh abutting Bay of Bengal is also a part of the Coromandal coast that runs to a length of 960 km on the east coast of India. The two large rivers Godavari and Krishna, which originate in the west coast, join the sea with in a gap of 200 km between them. The rivers, in addition to suspended sediments coming through surface runoff, also receive discharge of domestic as well as treated and untreated industrial effluents. The water samples of various freshwater bodies from 80 different stations in the nine districts were collected and analysed for their physicochemical characteristics to determine the hydrogeochemical characteristics of the stretch of Andhra Pradesh.

Keywords

Freshwater Resources, Andhra Pradesh Coast, Water Quality, Water Pollution.

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Mohd Talha Anees ¹, K. Abdullah ¹, M. N. M. Nawawi ¹, Nik Norulaini Nik Ab Rahman ², Abd. Rahni Mt. Piah ³, M. I. Syakir ⁴, A. K. Mohd. Omar ⁴, Kaizar Hossain ⁵

Affiliations
1 School of Physics, Universiti Sains Malaysia, 11800 Minden, Penang, MY
2 School of Distance Education, Universiti Sains Malaysia, 11800 Minden, Penang, MY
3 School of Mathematics, Universiti Sains Malaysia, 11800 Minden, Penang, MY
4 School of Industrial Technology, Universiti Sains Malaysia, 11800, Minden, Penang, MY
5 Detartment of Environmental Science, PACE Institute of Technology and Sciences, Ongole – 523272, Andhra Pradesh, IN

Abstract

Objective: To propose an integrated approach for flood analyses in order to understand the causes and effects of flooding, and to achieve better measurements in flood risk predictions and mitigation. Method: The role of remote sensing, hydrology and geophysical methods in determining and selection of input and model parameters in hydrological modeling for flood analyses were discussed. Findings: Remote sensing and GIS are found to be important in any preliminary flood analysis while hydrological parameters such as precipitation, infiltration, evapotranspiration and runoff and their factors such as meteorological characteristics, land use land cover changes, types of vegetation and soil properties play a crucial role for accurate hydrological modelling. In hydrogeological investigation, geophysical methods such as Transient Electromagnetic and Resistivity methods are found best for the determination of subsurface hydrological factors such as hydraulic conductivity, porosity and permeability. Improvement: It is found that the combination of these methods can furnish precise flood analyses through modeling techniques.

Keywords

Flooding, Geographic Information System, Geophysical Methods, Hydrology, Remote Sensing.

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