WBIW/EE/NID/NIT-04(e)/2026-27 , SL NO - 05

Detailed topographical & hydrographical survey of various Rivers/Khals/Drainage Channels/ Canals/ Dam/ Reservoirs/ Beels etc using higher precision instruments like DGPS/RTK/TOTAL STATION for land survey, ADCP/ECO-SOUNDER for water body survey etc alongwith total geo-referencing (X-Y-Z) alignment and plotting on google earth/arcGIS based map for taking cross sections, Long section of Drainage Channels/ Khals/Rivers (extending each cross section upto 50 m from toe of country side at both side banks) w.r.t. nearest known Ground control point(G.C.P)/Great trigonometrical survey (G.T.S.) Bench Mark, including additional cross sections (both U/S & D/S) at the points of bridges, regulators, cross drain, inlets, tributaries, branch channels, drains, out channels from pump houses, important structures etc., including additional cross sections at adjacent outfall point of these Drainage Channels/Khals/Rivers into other river for 250 mtr U/S & 250m D/S of that outfall point and showing detailed topography plan of all permanent & temporarily features like roads, canal, bridges, park, culvert, boundary wall, Electric post, transformer etc. as available within the area, also including preparation of survey plan showing the location of topo point of FRL/G.L/Bed level/Berm Level/HFL/LWL/Free-board/Pond/depressions/road etc. with appropriate R.L and open area/green area/total ground coverage/nature of land for mentioning in the drawing with suitable scale, true north & relavent photographs etc. as per direction & satisfaction of E.I.C. complete in all respect. The cross section interval shall be fixed as & when required as per direction of E.I.C. Raw data for mathematical modelling (in specified format as per direction of concerned authority) of survey work will also be submitted in time to time during working day.Note: [ i) The rate is inclusive of all incidental charges like all type carriage, engagement of manpower & instruments/equipment, Motor boat/Power driven boat with manpower if required, Data processing integrated software etc. as applicable to complete to work in all respect but the rate is exclusive of all taxes](i) Cross-Section Width 0.0 m to 250.0 m and Cross-Section interval of 30 m to 120 m C/C along river/khal/drainage channel etc.a) Upto 5.00 Km

b) 5.00 Km to 10.0 km

c) 10.00 Km to 20.0 km

d) 20.00 Km to 50.0 km

Submission of report comprising detail drawings, volume calculation of silt deposited (If required) in both soft copy (in DWG/AutoCAD, Microsoft excel, Pdf & KMZ/KML format & must be geo-referenced i.e (X-Y-Z) & hard copy (six sets) in the form of index map, topographic site plan, Contour plan, cross sections, long sections etc of Channels/ Khals/Rivers etc showing all important features with min suitable scale, true north and relevant photographs etc as per direction of E.I.C. complete in all respect. All Survey raw data and total report in the form of soft copy in pen driver (at least 32GB memory) will also be submitted as direction of EIC

Construction of permanent, Benchmark pillar at defined location w.r.t. Ground control point(G.C.P)/Great trigonometrical survey (G.TS.) Bench Mark (including flying of G.C.P/G.T.S. Bench Mark from nearest available locations up to different locations with the help of high precision instruments like DGPS/RTK/TOTAL STATION etc) as per following specification: Cast-in Situ/Precast RCC made benchmark pillar of size 0.30m x 0.30m x 1.5m (0.60 m above G.L. & buried 0.90 m below & suitable P.C.C base finish) with cement concrete grade of 1.1.5:3, 4 nos of vertical bars of 10 mm dia & stirrups of 8 mm dia @150 mm c/c, including mild steel fixed plate a top (100 mm x100 mm x6 mm) inserted within concrete, including fixing on P.C. C. base (3ft x 3ft) bounded with brick wall all side 300mm thick brick work for 0.6m height and inside portion fill up with sand including necessary Painting, lettering, colouring as per enclosed drawing as per direction of EIC complete in all respect.Note: [The rate is inclusive of all charges like all materials, all type carriage up to site, all labour, all concrete related items, painting, lettering etc as applicable to complete to work in all respect but the rate is exclusive of all taxes as applicable.]

Benchmark Connection for different location w.r.t known Bench Mark including flying of known Ground control point (G.C.P)/Great trigonometrical survey (G.T.S.) Bench Mark from nearest available locations up to different locations with the help of high precision instruments like DGPS/RTK/TOTAL STATION etc. and also providing necessary painting, lettering etc as per direction of EIC complete in all respect. Note: The rate is inclusive of all charges like all materials, all type carriage upto site, all labours, painting, lettering etc as applicable to complete to work in all respect but the rate is exclusive of all taxes as applicable