integrated coastal zone management project west ... - Iczmpwb.org
integrated coastal zone management project west ... - Iczmpwb.org integrated coastal zone management project west ... - Iczmpwb.org
167164. The initial study has indicated that there will be two prong solutions, namely shorttermand long-term. The long-term solution will be to devise and design measures likeconstruction of hydraulic groins through opening up of the mouth of estuaries, removal ofnaturally created barrier to supply sediment at the starved regions, etc. and will be based onsediment flow analysis and outcome of more specific research on coastal processes aroundSagar Island as per Component N. Such designing will be completed concurrently withcoastal process monitoring scheduled for 3 years.165. Short-term solution will be taken up at Dublat where heavy waves breakingcontinuously at the foot of the embankment erode the embankment during high tide period.The embankment as a result fails very often resulting in tidal inundation and consequenceloss of crops and public properties. The planned short-term solution will includestrengthening and armouring of the embankments. It is proposed to armour the embankmentfor 1500 m length by 2.0 m x 1.0 m x 0.60 m thick M-15 concrete block pitching works overfilter beds in addition to construction of cross walls. The design parameters are as follows:Existing ground level (average)(+) 2.00 m GTSHighest and average high tide level(+) 5.40 m GTS and (+) 4.50 m GTSAverage and lowest low tide level(-) 1.20 m GTS and (-) 2.00 m GTSSea side berm level and height of wave1.00 – 2.00 m and 1.50 – 2.00 mFormation level of proposed sea dyke(+) 8.20 m GTSTop level of proposed block pitching(+) 7.90 m GTSSea- and country side slope of proposed sea dyke 1:6 and 1:2Height of proposed sea dyke above beach level 6.70 mSea dyke encased in sea side below berm level 1.50 mConventional size of C.C. (1:2:4) block2.00 m x 1.00 m x 0.60 mSize of sausage at the toe of block pitching 1.00 m x 0.60 mTop of sea side portion at +8.20 m levelBrick wall with corbelling in R/S TopLength of the proposed sea dyke1500.00 mTotal sea side slope length of proposed sea dyke 48.05 mFree board of the proposed dyke3.70 mThickness of geofabric filter2.0 mmSpacing of intermediate cross wall15.00 m apartThickness of cross wall and depth400 cm thick, 1050 mm depth166. The implementing agency for the short-term construction work will be SundarbanInfrastructure Development Corporation Ltd (SIDCL). The cost has been estimated at Rs
16827.33 crores having a works cost component of 25.36 crores. The short term work will becompleted in 3 years but at present no budgetary fund allocation has been made.Component A.2 - Prevention of coastal erosion by development of coastalbio-shield in Digha-Sankarpur area167. Bio-shields, or vegetative cover, along coastal zones play a significant role in shoreprotection and also in protection of the coastal human habitations and agricultural cropsagainst impacts of cyclones, storm surges, tidal waves etc. They contribute to overall shoreprotection. Under this component, coastal bio-shields are to be created in the DighaSankarpur area, on government land.168. The project is to be implemented by the Directorate of Forests, Government of WestBengal over a period of seven years. The villagers and/or local self government will beinvolved in the management of the proposed plantations jointly with Forest department. Theapproach will meet the objective of promoting joint management of coastal resources. Theprogramme will contribute towards capacity building of coastal communities andgovernment for community based activities related to regeneration of mangrove and othercoastal plantations as bio-shields and as part of integrated coastal zone management.Involvement of the local population in creation, protection and management of the forest socreated is an integral part of the project.169. During feasibility study, a number of sites in the Digha-Sankarpur area wereexamined for development of bio-shields. Out of these, fourteen sites were finally chosen.Site for mangrove plantation170. The sites for the mangrove plantations were selected taking into consideration thetopography of the coastal areas which have mudflats and gentle slopes. The sites areregularly inundated regularly by high tides. The sites are Kanaichhatta, Kaluberia,Balughata, Chakrabortychak, Rayrayanchak, Mehidinaar, Dhobaghata, Katagechia, Nijkasbaunder Contai and Bajkul forest ranges.Site for coastal shelter belt (casurina) plantation171. The sites for coastal shelter belt plantation were selected taking into consideration thetopography of the coastal areas of Contai and Bajkul forest ranges that have also sandy soil.These areas are basically not inundated by high tides and are suitable for planting Casurinaand other miscellaneous species.Site for gap plantation172. The sites for gap plantation are selected in the old plantations of coastal shelter beltmainly consisting of monoculture plantation of casurina. These sites under Contai and
- Page 13 and 14: 12small estuary to the east is Jald
- Page 15 and 16: 14Biosphere Reserve by UNESCO in 20
- Page 17 and 18: 16Plotosus canius, Pompus argenteus
- Page 19 and 20: 18huge Ganges catchment. Pollution
- Page 21 and 22: 20Bengal. The port handles over 28
- Page 23 and 24: 2240. The Act is one of the major e
- Page 25 and 26: 24norms. The area up to 200 metres
- Page 27 and 28: 261. No construction to be permitte
- Page 29 and 30: 28survey of flora, fauna, forests a
- Page 31 and 32: 30so far. The major research areas
- Page 33 and 34: 32connected with the Bengal Smoke N
- Page 35 and 36: 34Authority has been given wide ran
- Page 37 and 38: 36technical field staff in biodiver
- Page 39 and 40: 38In RupeesDepartment of GOWBYear20
- Page 41 and 42: 144some sources of residual oil, gr
- Page 43 and 44: 146111. The east coast of India is
- Page 45 and 46: 148Dredging in and around Haldia po
- Page 47 and 48: 150market forces. The average econo
- Page 49 and 50: 152131. The outcome of the importan
- Page 51 and 52: 154STRENGTH WEAKNESS OPPORTUNITIES
- Page 53 and 54: 156B. Project Objectives and Key In
- Page 55 and 56: 158continue to earn their livelihoo
- Page 57 and 58: 160Component A.1 - Prevention of co
- Page 59 and 60: 162meander scrolls, now abandoned,
- Page 61 and 62: 164carried down to Sagar Island by
- Page 63: 166Dublat the formation of a spit,
- Page 67 and 68: 170180. When plantation are raised
- Page 69 and 70: 172Name of MouzaAdministrativeBlock
- Page 71 and 72: 174F.2 Component B - Pollution prev
- Page 73: 176192. Creation of pay and use toi
- Page 76 and 77: 179199. The work elements to arrive
- Page 78 and 79: 181environmental pollution goes una
- Page 80 and 81: 183Number of (35 cm X 25 cm size) B
- Page 82 and 83: 185Litter bins - 10 litres capacity
- Page 84 and 85: 187indirectly to the Bay of Bengal
- Page 86 and 87: 189Agricultural 120 Water works 10S
- Page 88 and 89: 191243. The following tanks will be
- Page 90 and 91: 193248. A three-storied building ha
- Page 92 and 93: 195underground SW pipes to be laid
- Page 94 and 95: 197 one public change room in betwe
- Page 96 and 97: 199construction of a toilet blockla
- Page 98 and 99: 201Component E.1 - Capacity buildin
- Page 100 and 101: 203Status of surface water resource
- Page 102 and 103: 205Procurement of digital data prod
- Page 104 and 105: 207activity in a mangrove swamp. Ho
- Page 106 and 107: 209299. The project cost has been e
- Page 108 and 109: 211expenditure sanction and payment
- Page 110 and 111: 213ICZMP-WEST BENGAL-Institutional
- Page 112 and 113: 215ICZM Project Management UnitProj
167164. The initial study has indicated that there will be two prong solutions, namely shorttermand long-term. The long-term solution will be to devise and design measures likeconstruction of hydraulic groins through opening up of the mouth of estuaries, removal ofnaturally created barrier to supply sediment at the starved regions, etc. and will be based onsediment flow analysis and outcome of more specific research on <strong>coastal</strong> processes aroundSagar Island as per Component N. Such designing will be completed concurrently with<strong>coastal</strong> process monitoring scheduled for 3 years.165. Short-term solution will be taken up at Dublat where heavy waves breakingcontinuously at the foot of the embankment erode the embankment during high tide period.The embankment as a result fails very often resulting in tidal inundation and consequenceloss of crops and public properties. The planned short-term solution will includestrengthening and armouring of the embankments. It is proposed to armour the embankmentfor 1500 m length by 2.0 m x 1.0 m x 0.60 m thick M-15 concrete block pitching works overfilter beds in addition to construction of cross walls. The design parameters are as follows:Existing ground level (average)(+) 2.00 m GTSHighest and average high tide level(+) 5.40 m GTS and (+) 4.50 m GTSAverage and lo<strong>west</strong> low tide level(-) 1.20 m GTS and (-) 2.00 m GTSSea side berm level and height of wave1.00 – 2.00 m and 1.50 – 2.00 mFormation level of proposed sea dyke(+) 8.20 m GTSTop level of proposed block pitching(+) 7.90 m GTSSea- and country side slope of proposed sea dyke 1:6 and 1:2Height of proposed sea dyke above beach level 6.70 mSea dyke encased in sea side below berm level 1.50 mConventional size of C.C. (1:2:4) block2.00 m x 1.00 m x 0.60 mSize of sausage at the toe of block pitching 1.00 m x 0.60 mTop of sea side portion at +8.20 m levelBrick wall with corbelling in R/S TopLength of the proposed sea dyke1500.00 mTotal sea side slope length of proposed sea dyke 48.05 mFree board of the proposed dyke3.70 mThickness of geofabric filter2.0 mmSpacing of intermediate cross wall15.00 m apartThickness of cross wall and depth400 cm thick, 1050 mm depth166. The implementing agency for the short-term construction work will be SundarbanInfrastructure Development Corporation Ltd (SIDCL). The cost has been estimated at Rs
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