WBIW/EE/SDP/RRI/eNIT-05 (e )/2025-26/1

Detailed topographic & bathymentric survey of river Muriganga in connection with dredging from Lot-8 (Kakdwip) to Kachuberia (Sagar Island) ferry routes using higher precision instruments like DGPS/TOTAL STATION for land survey, ADCP/ECO-SOUNDER (Double Frequency) for ruver survey for taking cross sections in the river ( at an maximum interval of 75 m) upto a distance of 50 m in the country side from the bank, including tide level observations at 10 min interval during survey for tide correction, establishment of two permanent guages near the jetties at both sides of river Muriganga and marking the levels on the guage from a nearest SOI BM ( within 1 km) , the value of which will be provided by the department by using Digital Level etc and submission of report comprising of detail drawings, Chart drwaing in both soft copy in 64 GB pendrive (in AutoCAD, Microsoft excel, Pdf & .KMZ/KML format & must be geo-referenced) & hard copy (six sets) in the form of index map, topographic site plan,cross sections, long sections etc. Survey Raw data ( in specified format as per direction of E-in-C) of survey work will also to be submitted time to time during the progress of the work. Note: [i) The rate is inclusive of all incidental charges like Mobilisation charges of survey units, all type carriage, engagement of manpower & instruments/equipment, Motor boat/Power driven boat with manpower, Data processing integrated software etc. as applicable to complete to work in all respect but the rate is exclusive of all taxes ii) Echo sounder or ADCP data should be interfaced with HYPACK or equivalent to data logging software in respect of tide correction.

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