Study of Kerala Coastal Belt 2026-27 Conducting Topographic Survey including cross sectional profile at Alappad region between Vellanathuruthu and Azheekkal CP 429 to CP499 under Coastal Engineering Section Kollam

OD25442/2026-2027:Conducting Topographic survey using DGPS integrated RTK along the sea coast of all terrain( both plain and difficult) and carrying out beach profile survey for cross sections at every 100 m intervals (unless otherwise specified by the Engineer in charge with respect to site condition) with levels at 2m intervals along the cross section from High Tide Level (HTL) +2 m , up to Low Tide Level(LTL)with minimum land width of 100 m taken and plotted after connecting available nearest GTS bench marking to the existing Benchmark (BM) stone and subsequently to the CP stones with respect to Chart datum/Bench mark and submission of survey reports with drawings of site plan with clear demarcation showing locations and Reduced Level of CP,AS,KM,guard stones,BM stones Roads,River mouth,Azhi,Pozhi,Fishing gaps,harbour, port, existing coastal protection structures such as sea wall,groynes,breakwater ,residential building, other prominent structures ,monuments etc and Topographic maps showing plan in 1:500 scale ,cross section H (1:250) and V(1:100) with longitudinal section in scale 1:5000 in digitalized form as well as hard copy (5 nos each) etc complete with out turn 5 Ha per day as per the direction of departmental officers at site.