Groundwater Table - Revision history

Mukbil at 08:16, 30 August 2021

2021-08-30T08:16:21Z

← Older revision		Revision as of 08:16, 30 August 2021
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	'''Groundwater Table''' the top zone of [[soil]] and rock that is saturated with water; ie it is the upper surface of a zone of saturation or the upper surface of the [[groundwater]]. Its level varies with [[topography]] and infiltration of water from [[rainfall]] or other sources. Under natural conditions water table is the subdued replica of the surface topography. Groundwater generally flows from areas where water table is higher to that of lower elevation. In the absence of groundwater flow, the water table will be flat and a sloping water table indicates that the groundwater is flowing. Natural springs are formed when the water table meets the ground surface.		'''Groundwater Table''' the top zone of [[soil]] and rock that is saturated with water; ie it is the upper surface of a zone of saturation or the upper surface of the [[groundwater]]. Its level varies with [[topography]] and infiltration of water from [[rainfall]] or other sources. Under natural conditions water table is the subdued replica of the surface topography. Groundwater generally flows from areas where water table is higher to that of lower elevation. In the absence of groundwater flow, the water table will be flat and a sloping water table indicates that the groundwater is flowing. Natural springs are formed when the water table meets the ground surface.

	In Bangladesh the depth of water tables varies from less than a meter to more than 30m. The shallowest water table occurs in the coastal region whereas the deepest water table occurs in the [[Barind Tract\|barind tract]] and Dhaka City (more than 30m from the ground surface). The depth to the water table moves seasonally with annual recharge and discharge conditions. Here, the water table is shallowest towards the end of [[monsoon]] and deepest in April-May. The amount of seasonal fluctuation varies from less than a meter to more than 10m depending on the local hydrogeological conditions, amount of groundwater abstraction and natural discharge of groundwater. In recent years there is a declining trend in the deepest water table due to larger amount of groundwater withdrawal, particularly for [[irrigation]]. The [[~~bangladesh water development board~~\|bangladesh water development board]] maintains a national network of observation wells all over the country and measures the depth of the water table once a week. [Kazi Matinuddin Ahmed and M Qumrul Hassan]		In Bangladesh the depth of water tables varies from less than a meter to more than 30m. The shallowest water table occurs in the coastal region whereas the deepest water table occurs in the [[Barind Tract\|barind tract]] and Dhaka City (more than 30m from the ground surface). The depth to the water table moves seasonally with annual recharge and discharge conditions. Here, the water table is shallowest towards the end of [[monsoon]] and deepest in April-May. The amount of seasonal fluctuation varies from less than a meter to more than 10m depending on the local hydrogeological conditions, amount of groundwater abstraction and natural discharge of groundwater. In recent years there is a declining trend in the deepest water table due to larger amount of groundwater withdrawal, particularly for [[irrigation]]. The [[Bangladesh Water Development Board\|bangladesh water development board]] maintains a national network of observation wells all over the country and measures the depth of the water table once a week. [Kazi Matinuddin Ahmed and M Qumrul Hassan]

	[[Category:natural sciences]]		[[Category:natural sciences]]

	[[bn:ভূ-জল পৃষ্ঠ]]		[[bn:ভূ-জল পৃষ্ঠ]]

Mukbil at 08:15, 30 August 2021

2021-08-30T08:15:36Z

← Older revision		Revision as of 08:15, 30 August 2021
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	'''Groundwater Table'''~~''' '''~~the top zone of [[soil]] and rock that is saturated with water; ie it is the upper surface of a zone of saturation or the upper surface of the [[groundwater]]. Its level varies with [[topography]] and infiltration of water from [[rainfall]] or other sources. Under natural conditions water table is the subdued replica of the surface topography. Groundwater generally flows from areas where water table is higher to that of lower elevation. In the absence of groundwater flow, the water table will be flat and a sloping water table indicates that the groundwater is flowing. Natural springs are formed when the water table meets the ground surface.		'''Groundwater Table''' the top zone of [[soil]] and rock that is saturated with water; ie it is the upper surface of a zone of saturation or the upper surface of the [[groundwater]]. Its level varies with [[topography]] and infiltration of water from [[rainfall]] or other sources. Under natural conditions water table is the subdued replica of the surface topography. Groundwater generally flows from areas where water table is higher to that of lower elevation. In the absence of groundwater flow, the water table will be flat and a sloping water table indicates that the groundwater is flowing. Natural springs are formed when the water table meets the ground surface.

	In Bangladesh the depth of water tables varies from less than a meter to more than 30m. The shallowest water table occurs in the coastal region whereas the deepest water table occurs in the [[barind tract]] and Dhaka City (more than 30m from the ground surface). The depth to the water table moves seasonally with annual recharge and discharge conditions. Here, the water table is shallowest towards the end of [[monsoon]] and deepest in April-May. The amount of seasonal fluctuation varies from less than a meter to more than 10m depending on the local hydrogeological conditions, amount of groundwater abstraction and natural discharge of groundwater. In recent years there is a declining trend in the deepest water table due to larger amount of groundwater withdrawal, particularly for [[irrigation]]. The [[bangladesh water development board]] maintains a national network of observation wells all over the country and measures the depth of the water table once a week. [Kazi Matinuddin Ahmed and M Qumrul Hassan~~] [Ahmed, Kazi Matin Uddin Professor of Geology, Dhaka University~~]		In Bangladesh the depth of water tables varies from less than a meter to more than 30m. The shallowest water table occurs in the coastal region whereas the deepest water table occurs in the [[Barind Tract\|barind tract]] and Dhaka City (more than 30m from the ground surface). The depth to the water table moves seasonally with annual recharge and discharge conditions. Here, the water table is shallowest towards the end of [[monsoon]] and deepest in April-May. The amount of seasonal fluctuation varies from less than a meter to more than 10m depending on the local hydrogeological conditions, amount of groundwater abstraction and natural discharge of groundwater. In recent years there is a declining trend in the deepest water table due to larger amount of groundwater withdrawal, particularly for [[irrigation]]. The [[bangladesh water development board\|bangladesh water development board]] maintains a national network of observation wells all over the country and measures the depth of the water table once a week. [Kazi Matinuddin Ahmed and M Qumrul Hassan]

	[[Category:natural sciences]]		[[Category:natural sciences]]

	[[bn:ভূ-জল পৃষ্ঠ]]		[[bn:ভূ-জল পৃষ্ঠ]]

Nasirkhan: Content Updated.

2021-06-18T06:03:16Z

Content Updated.

← Older revision		Revision as of 06:03, 18 June 2021
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	~~<p class=Normal >~~'''Groundwater Table'''''' '''the top zone of [[soil]] and rock that is saturated with water; ie it is the upper surface of a zone of saturation or the upper surface of the [[groundwater]]. Its level varies with [[topography]] and infiltration of water from [[rainfall]] or other sources. Under natural conditions water table is the subdued replica of the surface topography. Groundwater generally flows from areas where water table is higher to that of lower elevation. In the absence of groundwater flow, the water table will be flat and a sloping water table indicates that the groundwater is flowing. Natural springs are formed when the water table meets the ground surface.		'''Groundwater Table'''''' '''the top zone of [[soil]] and rock that is saturated with water; ie it is the upper surface of a zone of saturation or the upper surface of the [[groundwater]]. Its level varies with [[topography]] and infiltration of water from [[rainfall]] or other sources. Under natural conditions water table is the subdued replica of the surface topography. Groundwater generally flows from areas where water table is higher to that of lower elevation. In the absence of groundwater flow, the water table will be flat and a sloping water table indicates that the groundwater is flowing. Natural springs are formed when the water table meets the ground surface.

	~~<p class=Normal >~~In Bangladesh the depth of water tables varies from less than a meter to more than 30m. The shallowest water table occurs in the coastal region whereas the deepest water table occurs in the [[barind tract]] and Dhaka City (more than 30m from the ground surface). The depth to the water table moves seasonally with annual recharge and discharge conditions. Here, the water table is shallowest towards the end of [[monsoon]] and deepest in April-May. The amount of seasonal fluctuation varies from less than a meter to more than 10m depending on the local hydrogeological conditions, amount of groundwater abstraction and natural discharge of groundwater. In recent years there is a declining trend in the deepest water table due to larger amount of groundwater withdrawal, particularly for [[irrigation]]. The [[bangladesh water development board]] maintains a national network of observation wells all over the country and measures the depth of the water table once a week. [Kazi Matinuddin Ahmed and M Qumrul Hassan] [Ahmed, Kazi Matin Uddin Professor of Geology, Dhaka University]		In Bangladesh the depth of water tables varies from less than a meter to more than 30m. The shallowest water table occurs in the coastal region whereas the deepest water table occurs in the [[barind tract]] and Dhaka City (more than 30m from the ground surface). The depth to the water table moves seasonally with annual recharge and discharge conditions. Here, the water table is shallowest towards the end of [[monsoon]] and deepest in April-May. The amount of seasonal fluctuation varies from less than a meter to more than 10m depending on the local hydrogeological conditions, amount of groundwater abstraction and natural discharge of groundwater. In recent years there is a declining trend in the deepest water table due to larger amount of groundwater withdrawal, particularly for [[irrigation]]. The [[bangladesh water development board]] maintains a national network of observation wells all over the country and measures the depth of the water table once a week. [Kazi Matinuddin Ahmed and M Qumrul Hassan] [Ahmed, Kazi Matin Uddin Professor of Geology, Dhaka University]

	[[Category:natural sciences]]		[[Category:natural sciences]]

	[[bn:ভূ-জল পৃষ্ঠ]]		[[bn:ভূ-জল পৃষ্ঠ]]

0:0:0:0:0:0:0:1: Content Updated.

2021-06-17T19:12:27Z

Content Updated.

New page

<p class=Normal >'''Groundwater Table'''''' '''the top zone of [[soil]] and rock that is saturated with water; ie it is the upper surface of a zone of saturation or the upper surface of the [[groundwater]]. Its level varies with [[topography]] and infiltration of water from [[rainfall]] or other sources. Under natural conditions water table is the subdued replica of the surface topography. Groundwater generally flows from areas where water table is higher to that of lower elevation. In the absence of groundwater flow, the water table will be flat and a sloping water table indicates that the groundwater is flowing. Natural springs are formed when the water table meets the ground surface.

<p class=Normal >In Bangladesh the depth of water tables varies from less than a meter to more than 30m. The shallowest water table occurs in the coastal region whereas the deepest water table occurs in the [[barind tract]] and Dhaka City (more than 30m from the ground surface). The depth to the water table moves seasonally with annual recharge and discharge conditions. Here, the water table is shallowest towards the end of [[monsoon]] and deepest in April-May. The amount of seasonal fluctuation varies from less than a meter to more than 10m depending on the local hydrogeological conditions, amount of groundwater abstraction and natural discharge of groundwater. In recent years there is a declining trend in the deepest water table due to larger amount of groundwater withdrawal, particularly for [[irrigation]]. The [[bangladesh water development board]] maintains a national network of observation wells all over the country and measures the depth of the water table once a week. [Kazi Matinuddin Ahmed and M Qumrul Hassan] [Ahmed, Kazi Matin Uddin Professor of Geology, Dhaka University]

[[Category:natural sciences]]

[[bn:ভূ-জল পৃষ্ঠ]]