Groundwater vulnerability Assessment by DRASTIC method using GIS

International Journal of Geoinformatics and Geological Science

© 2017 by SSRG - IJGGS Journal

Volume 4 Issue 1

Year of Publication : 2017

Authors : A.V.Ramaraju, K.Krishna Veni

10.14445/23939206/IJGGS-V4I2P101

How to Cite?

A.V.Ramaraju, K.Krishna Veni, "Groundwater vulnerability Assessment by DRASTIC method using GIS," SSRG International Journal of Geoinformatics and Geological Science, vol. 4,  no. 1, pp. 6-13, 2017. Crossref, https://doi.org/10.14445/23939206/IJGGS-V4I2P101

Abstract:

In our day-to-day life, water plays an important role in serving our daily needs. As compared to past days there is a great depletion of surface as well as ground water. The objective of our study is to achieve vulnerability assessment of groundwater by using DRASTIC Method which was developed by United States Environmental Protection Agency (USEPA). It is most commonly used overlay and index method all over the world. Evaluation of groundwater vulnerability would be performed by using computer programs which are based on Geographical Information System (GIS) in order to facilitate data management and spatial analysis. The term vulnerability, that is used in this study is defined as a degree of capacity of the geological settings which are above water table, as joining of contaminants to groundwater where imposed by environmental factors. All the groundwater has some degree of protection under natural condition. It is an important initial step to identify degree of vulnerability by an index which is provided by superimposition of the environmental and geological properties that are explained in DRASTIC Method. At the end of the study by using a computer program together with DRASTIC method a vulnerability map will be obtained. The vulnerability map is an informative tool from different aspects such as it is an initial step for taking an attention of risk of groundwater could be getting polluted in some areas. In addition, surface activities could be limited by focusing on groundwater protection strategies which are considering degree of vulnerability of areas that are delineated by DRASTIC vulnerability index.

Keywords:

Ground water, DRASTIC index, vulnerability, GIS Map.

References:

[1] S. M. Shirazi et al, GIS- based DRASTIC method for groundwater vulnerability assessment, Journal of Risk Research, Vol. 15, No. 8,September 2012: 991-1011.
[2] Arzu Firat Ersoy and Fatma Gultekin, DRASTIC-based methodology for assessing groundwater vulnerability, Earth Sciences Research Journal, Vol. 17, No. 1, June 2013:33-40.
[3] R.A.N. Al-Adamat et al, Groundwater Vulnerability and risk mapping for the Basaltic aquifer of the Azraq basin of Jordan using GIS, Remote Sensing and DRASTIC, Applied Geography 23 (2003): 303-324.
[4] Ahmet Hakan Buyukdemirci, Groundwater Vulnerablity Assessment with DRASTIC Method, May 2012, 70 pages.
[5] Linda Aller, DRASTIC: A Standardized System For Evaluating Groundwater Pollution Potential Using Hydro-geologic Settings, May 1987.
[6] Dale Van Stempvoort, Lee Ewert & Leonard Wassenaar (1993) Aquifer Vulnerablity Index: A GIS - Compatible Method For Groundwater Vulnerability Mapping, Canadian Water Resources Journal, Vol. 18, No. 1, 1993.
[7] Saeid Eslamian, GIS DRASTIC model for groundwater vulnerability Estimation, Int. J. Water, Vol. 6, Nos. 1/2, 2011.