Duration: May, 2009-June, 2016 Feasibility study and detailed engineering of ganges barrage project

Description:

The main objectives of the feasibility study and detailed engineering design of the Ganges Barrage is to conduct a detailed feasibility study, socio-economic environment and other hydraulic and hydro-morphological survey and study and a detailed engineering design for the construction of a Barrage and associated engineering infra-structures across and river Ganges.

Another pertinent objective is to study the integrated water resources development in the Ganges Dependent Area in Bangladesh by providing irrigation to a gross area of 1.90 million hactare (approx) of land in the greater districts of Kushtia, Faridpur, Jessore, Khulna, Barisal, Pabna and Rajshahi, with a network of irrigation systems.

The overall objective of the project is to increase agricultural production including fisheries especially the sweet water fish production and livestocks, navigation salinity reduction, arsenic removal, increase employment opportunities and income generation in the project areas through optimum uses and proper management of the Ganges water to be available under the Ganges Water Sharing Treaty of 1996. It would protect the environment, specially the Sundarban and hasten the industrial development of the Khulna region.
Services:
Stage-I: Feasibility
Component-1: Barrage and Flow Distribution Studies
• Project Planning Studies
• Water Resources and Morphological Studies of Ganges and Gorai Rivers
• Irrigation, Drainage and Flow Augmentation Assessment
• Physical and Mathematical Model Studies
Component-2: Polder Improvement Studies
• Review of Previous Studies and Design
• Survey, Investigation and Consultation
• Water Resources, Morphological and Salinity Studies
Component-3: Project Formulation/Implementation Studies
• Social Impact Assessment
• Environmental Impact Assessment
• Economic Impact Assessment
Stage-II: Detailed Engineering Design
• Ganges Barrage and Allied Structures:
o Overall length of the Barrage: 2097.74 m
o Spillway: 78 Bays, Gates Width: 18.0 m
o Under Sluice: 18 Bays, Bay Width: 18.0 m
o Navigation Lock: 1 No, Width: 14.0 m
o Fish Pass: 2 Nos., Width: 20.0 m
o Hydro-Power Plant: 4 unit turbines, 76.4 MW
o Right Guide Bund: 6075 m
o Left Guide Bund: 5392 m
o Approach Embankment: 3550 m
• Gorai Off-take Structure:
o Length: 389.69 m
o Spillway: 15 Bays, Gates Width: 18.0 m
o Navigation Lock: 1 No, Width: 14.0 m
o Fish Pass: 1 No., Width: 20.0 m
o Hydro-Power Plant: 3 unit turbines, 36.6 MW
o Left Guide Bund: 2730 m
o Right Guide Bund: 5270 m
o Approach Embankment: 680 m
• Hisna Off-take Structure:
o Length: 51.0 m
o Spillway: 5 Bays Gates: 6.0m wide
o Fish Pass: 6.12 m
• Chandana Off-take Structure:
o Length: 30.0 m
o Spillway: 4 Bays Gates: 6.0m wide
• Regulators: 8 Nos.
• River Training Works:
o T-Groyne-1: 5270.0 m
o T-Groyne-2: 4778.0 m
o Bank Protection Works: 14.50 km
• Afflux Bund/Flood Embankments: 261.30 km
• Link Roads: 15.50 km
• Railway Bridge: Design of 2.1 km Steel Girder Bridge over the River Ganges
• Bridges: 09 Nos.
• Dredging/Excavation of River Systems: 1115.85 km

Funding agency: Government of Bangladesh