#440 - Polder Mapping for Socioeconomic Analysis in Southern Bangladesh

#16 Validated by aHaSaN

#31 Validated by aHaSaN

#30 Validated by aHaSaN

#15 Validated by aHaSaN

#52 Marked as done by kazi tusher

#33 Marked as done by kazi tusher

#53 Marked as done by kazi tusher

#37 Marked as done by kazi tusher

#76 Marked as done by kazi tusher

#66 Marked as done by kazi tusher

#63 Marked as done by Sajjadsapan

#83 Marked as done by Raven Nahid

#74 Marked as done by arafin

#62 Marked as done by tasauf1980

#77 Marked as done by MD Mozammel Haque

#78 Marked as done by kazi tusher

#31 Marked as done by ASHIQ MAHAMUD

#36 Marked as done by Rajib Kumar Chanda

#87 Marked as done by Rayhan Hossen

#47 Marked as done by Atikur Rahman atik

A number of problems and issues are hindering the development potential of Polder 29 of Southern Bangladesh at the moment.Drainage congestion is one of the major problems inside the polder area. During monsoon and post-monsoon periods, most of the Canals running through the polder area cannot cope with the increased rainfall occurrences, leading to moderate to severe drainage congestions. As per opinion of the people, around 40% khals inside the polder (Bokultola, Aro Canal, Mora Bhadra, Telikhali etc.) suffer from severe drainage congestion, taking one week or more to properly drain out rainwater. In addition, almost 30% Canals (Kanchannagar, Katakhal, Ruthimara etc.) suffer from moderate drainage congestions, taking 2 to 6 days to completely drain out rainwater. Due to the reduced drainage capacity of Canals, rainwater often inundates the adjacent agricultural fields for a period of 4~5 days, and affects the crop production. Another major issue in the polder area is salinity intrusion especially in the dry period.Such salinity intrusion caused severe scarcity of drinking water sources at Char charia, Dighalia, Ratankhali, Jaliakhali, Akra, Chandgarh and Sundar Mahal. Erosion of the embankment at Baro aria and Jalikhali has left those areas and the local community unprotected and totally vulnerable to tidal flooding. The communication system is also being greatly hampered due to this eroded portion. In addition to all these issues, mismanagement is resulting in various damages in water control structures as well as peripheral embankments. Poor communication is another major problem. The unpaved portion becomes unusable for heavy vehicles during wet season. A research team has targeted the Polder 29 as their pilot area to develop OpenStreetMap (OSM) map database by collecting necessary geospatial information on existing features using satellite images. Mappers are requested to complete with highest quality.

Entities to Map
all type of roads, features, water ways, water bodies, agriculture area, settlements, buildings etc as seen in satellite images
Changeset Comment
#hotosm-task-440 #osmbd #GFDRR

Please follow the standard tags for the features. No need to put feature name and type if you really don't know about. put highway=unclassified; (if you can't determine the type)




water = pond;

waterway = canal;

water = natural ;

landuse = agriculture;

landuse = farm;


For other tags, please see http://wiki.openstreetmap.org/wiki/Map_Features

Please use the Mapbox or DigitalGlobe Premium Imagery for editing on iD or JOSM

You can split the grids as convenient. Thanks in advance

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