Removal of Hyacinth and weeds, Vegetations and floating materials of Water weeds and floating materials in Narayanapuram Tank and Downstream of Keelkattalai Tank Surplus Course in Sholinganallur Taluk of Chennai District. Removal of Hyacinth and weeds, Vegetations and floating materials of Water weeds and floating materials in Narayanapuram Tank and Downstream of Keelkattalai Tank Surplus Course in Sholinganallur Taluk of Chennai District.