Dear Mr. Aruchamy Deep ploughing might eventually have an influence if "intermediate flow" from the hills to a stream network passes below the agricultural area. I am however feeling a little bit like speculating as I am not familiar with the catchment. May I suggest that you delineate on the map you added the catchment, the stream network and the agricultural area and eventually mark a neighbouring catchment where no changes in the hydrologic response has been observed ? This could eventually help all participants in the discussion to better orientate themselves. By the way: I had a closer look at your map and found the exact location you indicated using Google Earth - this map might give some hints on how the basin used to work - if the stream networks indicated on the map are accurate and I read the map correctly - a stream network originating in the hills disappears in the plane and another starts in the plane close to the bottom of the hills. (Both networks are ot the west of the location you indicated by the coordinates). In the first case there might be a percolation to deeper geological strata and in the second case the network might be alimented by intermediate flow from the hills. Nevertheless, here again I am still guessing.

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Dear Mr. Aruchamy

Deep ploughing might eventually have an influence if "intermediate flow" from the hills to a stream network passes below the agricultural area. I am however feeling a little bit like speculating as I am not familiar with the catchment.

May I suggest that you delineate on the map you added the catchment, the stream network and the agricultural area and eventually mark a neighbouring catchment where no changes in the hydrologic response has been observed ? This could eventually help all participants in the discussion to better orientate themselves.

By the way: I had a closer look at your map and found the exact location you indicated using Google Earth - this map might give some hints on how the basin used to work - if the stream networks indicated on the map are accurate and I read the map correctly - a stream network originating in the hills disappears in the plane and another starts in the plane close to the bottom of the hills. (Both networks are ot the west of the location you indicated by the coordinates). In the first case there might be a percolation to deeper geological strata and in the second case the network might be alimented by intermediate flow from the hills. Nevertheless, here again I am still guessing.