Table 1. List of BMPs and their effects on mitigation of flooding.
BMPs Expected effects on mitigation of flooding
Dredging rivers and streams Increase carrying capacity of drainage
Re-excavation of abandoned channels,
ponds, and lakes Increase carrying capacity of drainage;
reduce run-off
Dispersal of dredged/excavated sediments
on land Increase elevations of earthen roads and
village platforms
Conservation tillage Reduce soil erosion and run-off
Establishment of vegetated buffer zone
along rivers and streams Reduce soil erosion, run-off, and bank
erosion
Silt fence around construction sites Reduce soil erosion and run-off
Sediment and run-off detention ponds in
construction sites Reduce soil erosion and run-off
Removal of coastal polders Increase land elevations by tidal inundation
Efficient storm sewer system in cities Increasing carrying capacity and reduce
water-logging in cities
Planned urbanization and compact township Reduce impervious surface and run-off
Watershed-scale landuse planning Reduce run-off, soil erosion, and impervious
surface; sustainable economic developments
Reforestation programs Reduce run-off and soil erosion
Good governance, self-reliance, and
implementation of environmental acts Implementation of BMPs to mitigate
flooding problems; sustainability in
economy and environment
Integrated regional water resources
development plan for Ganges-Brahmaputra-
Meghna Basin in Indian Subcontinent Flood/drought control; optimal uses of
natural resources in the region; sustainable
environment and development