• Sabbavarapu Tanuja
• Dr. Vemu Sreenivasulu

Ground water is an essential and vital component of any life-supporting system. It is not only a basic need for human existence but also a vital input for all development activities. Increasing usage of ground water tends to cause sea water intrusion. Sea water intrusion often happens in coastal areas. An attempt has been made in the present study to analyses the water quality parameters and to find the sea water intrusion in the coastal regions of East Godavari and Visakhapatnam districts. For this study, 16 well samples are considered within a 20km radius of the coast, and the seawater intrusion is determined from 2000–2018. Chemical indicators such as Ca/Mg, Cl/[HCO3+CO3], Na/Cl, Cl/[HCO3+SO4], and base exchange indices (BEX) were used to identify sea water intrusion areas. The determination of the distribution of sea water intrusion was done by mapping analysis using the Arc GIS application program. The piper plot diagram also shown (from 2000 to 2018) it is an effective graphic procedure to segregate relevant analytical data to understand the sources of the dissolved constituents in water. To create a graph with the major water constituents, Piper has two triangles corresponding with the cations and anions, respectively, and one diamond that summarize both triangles. Based on the results, all the locations are intruded, but 8 locations show more contamination than others.

Sea Water intrusion, Arc GIS, Piper Plot.

"SEAWATER INTRUSION USING CHEMICAL INDICATORS IN THE COASTAL AQUIFERS EAST GODAVARI & VISAKHAPATNAM DISTRICTS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.10, Issue 11, page no.a233-a239, November-2023, Available :http://www.jetir.org/papers/JETIR2311034.pdf

"SEAWATER INTRUSION USING CHEMICAL INDICATORS IN THE COASTAL AQUIFERS EAST GODAVARI & VISAKHAPATNAM DISTRICTS", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.10, Issue 11, page no. ppa233-a239, November-2023, Available at : http://www.jetir.org/papers/JETIR2311034.pdf