Soil electrical conductivity data districtwise India

[Sabyasachi Kabiraj]

I am doing a project on soil electrical conductivity and relationship with satellite reflectance value. But I am facing difficulties in finding the ground data of electrical conductivity of various locations districwise in India specially I need for Tutucorin district of Tamil Nadu. I got some data from indian krishi portal but those samples are not enough for me because those are collected in different agriculture fields. I need saline soil locations near coal areas. Kindly help me in this regard. Thanking you.