Local Rainfall

Road and riverbank elevation (to compensate for subsidence) without proper adjustments of the local drainage systems has led to water clogging in many places within the study area. Local rainfall fills the lower areas between the elevated roads and river banks, some of which remains water-logged or flooded for weeks. Moreover, the sea level in the lower parts of the delta has become relatively higher due to subsidence, thereby losing the gravity drainage even during most low tides. To date, no large pumping schemes have been implemented in the study area to solve this problem.