https://en.banglapedia.org/index.php?action=history&feed=atom&title=Baid 2026-04-29T15:27:10Z Revision history for this page on the wiki MediaWiki 1.40.0 https://en.banglapedia.org/index.php?title=Baid&diff=554&oldid=prev 2021-06-17T18:58:27Z

<p>Content Updated.</p> <p><b>New page</b></p><div>&#039;&#039;&#039;Baid&#039;&#039;&#039; low lying, narrow winding valley, ridged by relatively high [[Topography|topography]]. This type of topography, locally called [[Chala|chala]], is commonly seen in the [[Dhaka|dhaka]], [[Gazipur District|gazipur]], [[Tangail District|tangail]], [[Mymensingh District|mymensingh]] and [[Jamalpur District|jamalpur]] red soil areas (ie within the [[Madhupur Tract|madhupur tract]]). The valleys are believed to be the remnants of the past estuarine [[Tidal Channel|tidal channel]]s when the area had a estuarine environment during the Pleistocene period (about 0.8-1 million years ago). As the [[Sea|sea]] receded south and the area became uplifted, the baids lost connection with their parent channels, thus becoming inoperative. In most cases, the baids become well connected with the parent channels during the [[Monsoon|monsoon]] when they receive a flow from outside and act as local drainage outlets as well as a sink for the washed out eroded [[Soil|soil]] of the adjoining chalas. In the dry [[Season|season]] it is primarily used for boro rice cultivation. The soils of the baids are mostly silt-clay to [[Clay|clay]] and rich in organic matter. [Mohd Shamsul Alam]<br /> <br /> [[bn:বাইদ]]</div>

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