TITLE:
Impact of Tidal River Management (TRM) for Water Logging: A Geospatial Case Study on Coastal Zone of Bangladesh
AUTHORS:
Nur Hussain, Md. Hasibul Islam, Farhana Firdaus
KEYWORDS:
Climate Change, Upstream Water Supply, Sediment, Sea Level Rise, Tidal River Management, Water Logging
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.6 No.12,
December
24,
2018
ABSTRACT: Bangladesh is a floodplain dominated country. Coastal delta areas of Bangladesh
convey multiple impacts of climate change worth-hit. Most of the rivers
carry a huge amount of sediment from upstream piedmont area. The river
bed rises due to insufficient upstream water supply. Similarly, the deposited
sedimentation creates a large number of sandbars inside the river. That’s why,
water logging and siltation turn into a serious problem in the south-western
region of Bangladesh, especially in Satkhira, Khulna and Jessore district. In
the middle of September, 2011 the Tidal River Management (TRM) project
approved at the study site for four years to develop the water logging problem
with basic consideration of silt management. In this circumstance, this study
focused on the consequences of the TRM on water logging in the coastal area
of Bangladesh. Primary and secondary data have been used. Geospatial analyses
have been used following the NDWI in Arc GIS for water logging area
detestation using Landsat Enhance Thematic Mapper (ETM) and Landsat
Operational land Image (OLI) satellite images. The geo-spatial analysis denoted,
about 5090 acres of agricultural land and about 729 acres of homestead
land have been water logged during TRM implementation period.