Groundwater in the floodplain - Revision history

Ajhil: /* Hydraulic testing */

2026-05-22T10:56:53Z

Hydraulic testing

← Older revision		Revision as of 11:56, 22 May 2026
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	All of these were constant rate tests, where the piezometer is pumped at a constant rate for between 100 and 360 minutes. The water level in the borehole is monitored during pumping and after the pump is switched off, until it recovers to its natural level.		All of these were constant rate tests, where the piezometer is pumped at a constant rate for between 100 and 360 minutes. The water level in the borehole is monitored during pumping and after the pump is switched off, until it recovers to its natural level.

	The alluvial and glaciofluvial deposits show generally moderate permeability, with most measured transmissivity values from test pumping between 200 and 400 m2/day.		The alluvial and glaciofluvial deposits show generally moderate permeability, with most measured transmissivity values from test pumping between 200 and 400 m<sup>2</sup>/day.

	==Contact==		==Contact==
	Contact [https://www.bgs.ac.uk/about-bgs/contact-us/ BGS Enquiries] for further information		Contact [https://www.bgs.ac.uk/about-bgs/contact-us/ BGS Enquiries] for further information
	[[category:Eddleston ]]		[[category:Eddleston ]]

Ajhil: /* Contact */

2026-05-22T10:34:15Z

Contact

← Older revision		Revision as of 11:34, 22 May 2026
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	==Contact==		==Contact==
	Contact BGS Enquiries for further information		Contact [https://www.bgs.ac.uk/about-bgs/contact-us/ BGS Enquiries] for further information
	[[category:Eddleston ]]		[[category:Eddleston ]]

Ajhil: /* Hydraulic testing */

2026-05-22T10:33:46Z

Hydraulic testing

← Older revision		Revision as of 11:33, 22 May 2026
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	[[Image:GroundwaterLevels.jpg\|frameless\|center\|400px\|]]		[[Image:GroundwaterLevels.jpg\|frameless\|center\|400px\|]]

	<center>'''Measuring and recording groundwater levels in a borehole during test pumping.'''</center>		<center>'''Measuring and recording groundwater levels<br>in a borehole during test pumping.'''</center>

	Test pumping of the floodplain and the wetland piezometers was done to establish the hydraulic properties of the geological deposits.		Test pumping of the floodplain and the wetland piezometers was done to establish the hydraulic properties of the geological deposits.

Ajhil: /* Hydraulic testing */

2026-05-22T10:33:34Z

Hydraulic testing

← Older revision		Revision as of 11:33, 22 May 2026
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	These are being used to characterise the hydraulic properties of the soil and shallowest underlying Quaternary deposits, which help to control the hydrology of the wetland, and to monitor wetland hydrology over time.		These are being used to characterise the hydraulic properties of the soil and shallowest underlying Quaternary deposits, which help to control the hydrology of the wetland, and to monitor wetland hydrology over time.

	[[Image:GroundwaterLevels.jpg\|frameless\|center\|~~500px~~\|]]		[[Image:GroundwaterLevels.jpg\|frameless\|center\|400px\|]]

	<center>'''Measuring and recording groundwater levels in a borehole during test pumping.'''</center>		<center>'''Measuring and recording groundwater levels in a borehole during test pumping.'''</center>

Ajhil: /* Hydraulic testing */

2026-05-22T10:31:59Z

Hydraulic testing

← Older revision		Revision as of 11:31, 22 May 2026
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	===Hydraulic testing===		===Hydraulic testing===
	~~Measuring and recording groundwater levels in a borehole during test pumpingMeasuring and recording groundwater levels in a borehole during test pumping~~
	Six smaller, shallower piezometers were installed by hand using a Dutch auger in a wetland area in one part of the site, as three pairs between ground level and 2 m depth.		Six smaller, shallower piezometers were installed by hand using a Dutch auger in a wetland area in one part of the site, as three pairs between ground level and 2 m depth.

	These are being used to characterise the hydraulic properties of the soil and shallowest underlying Quaternary deposits, which help to control the hydrology of the wetland, and to monitor wetland hydrology over time.		These are being used to characterise the hydraulic properties of the soil and shallowest underlying Quaternary deposits, which help to control the hydrology of the wetland, and to monitor wetland hydrology over time.

			[[Image:GroundwaterLevels.jpg\|frameless\|center\|500px\|]]

			<center>'''Measuring and recording groundwater levels in a borehole during test pumping.'''</center>

	Test pumping of the floodplain and the wetland piezometers was done to establish the hydraulic properties of the geological deposits.		Test pumping of the floodplain and the wetland piezometers was done to establish the hydraulic properties of the geological deposits.

Ajhil: /* Borehole drilling into the floodplain */

2026-05-22T10:29:50Z

Borehole drilling into the floodplain

← Older revision		Revision as of 11:29, 22 May 2026
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	Geological samples were collected during drilling and detailed geological logs produced, to show how the Quaternary deposits change with depth and laterally across the floodplain.		Geological samples were collected during drilling and detailed geological logs produced, to show how the Quaternary deposits change with depth and laterally across the floodplain.

	These data were invaluable for creating the [[~~Geology of the Eddleston Water catchment#~~New geological map of the Eddleston Water catchment \| 3D geological model]].		These data were invaluable for creating the [[New geological map of the Eddleston Water catchment \| 3D geological model]].

	The boreholes were installed with piezometers for aquifer hydraulic testing and ongoing groundwater monitoring.		The boreholes were installed with piezometers for aquifer hydraulic testing and ongoing groundwater monitoring.

Ajhil: /* Borehole drilling into the floodplain */

2026-05-22T10:29:30Z

Borehole drilling into the floodplain

← Older revision		Revision as of 11:29, 22 May 2026
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	<center>'''Drilling boreholes into the floodplain at Eddleston. The blue standpipe in the foreground is one borehole in a pair; the rig is drilling the second.'''</center>		<center>'''Drilling boreholes into the floodplain at Eddleston. The blue standpipe in the foreground is one borehole in a pair; the rig is drilling the second.'''</center>


	Geological samples were collected during drilling and detailed geological logs produced, to show how the Quaternary deposits change with depth and laterally across the floodplain.		Geological samples were collected during drilling and detailed geological logs produced, to show how the Quaternary deposits change with depth and laterally across the floodplain.

	These data were invaluable for creating the 3D geological model.		These data were invaluable for creating the [[Geology of the Eddleston Water catchment#New geological map of the Eddleston Water catchment \| 3D geological model]].

	The boreholes were installed with piezometers for aquifer hydraulic testing and ongoing groundwater monitoring.		The boreholes were installed with piezometers for aquifer hydraulic testing and ongoing groundwater monitoring.

Ajhil: /* Groundwater in the floodplain */

2026-05-22T10:27:57Z

Groundwater in the floodplain

← Older revision		Revision as of 11:27, 22 May 2026
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	A large part of this work is investigating how groundwater in the floodplain interacts with water in the soil.		A large part of this work is investigating how groundwater in the floodplain interacts with water in the soil.

	Sometimes it is hard to distinguish what is groundwater and what is soil water, because they are so closely linked — [[Soil and shallow groundwater \| see Soil and shallow groundwater]]		Sometimes it is hard to distinguish what is groundwater and what is soil water, because they are so closely linked — [[Soil and shallow groundwater \| ''see'' Soil and shallow groundwater]]



	===Borehole drilling into the floodplain===		===Borehole drilling into the floodplain===

Ajhil: /* Groundwater in the floodplain */

2026-05-22T10:27:26Z

Groundwater in the floodplain

← Older revision		Revision as of 11:27, 22 May 2026
Line 10:		Line 10:
	A large part of this work is investigating how groundwater in the floodplain interacts with water in the soil.		A large part of this work is investigating how groundwater in the floodplain interacts with water in the soil.

	Sometimes it is hard to distinguish what is groundwater and what is soil water, because they are so closely linked — see Soil and shallow groundwater		Sometimes it is hard to distinguish what is groundwater and what is soil water, because they are so closely linked — [[Soil and shallow groundwater \| see Soil and shallow groundwater]]



	===Borehole drilling into the floodplain===		===Borehole drilling into the floodplain===

Ajhil: /* Groundwater in the floodplain */

2026-05-22T10:25:39Z

Groundwater in the floodplain

← Older revision		Revision as of 11:25, 22 May 2026
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	==Groundwater in the floodplain==		==Groundwater in the floodplain==

	[https://www.youtube.com/watch?v=BTjvlUjKwQY]		[https://www.youtube.com/watch?v=BTjvlUjKwQY/ Eddleston_floodplain_youtube.jpg]

	<center>'''Drilling a borehole using a shell and auger rig,<br>Eddleston, 28 March 2011.'''</center>		<center>'''Drilling a borehole using a shell and auger rig,<br>Eddleston, 28 March 2011.'''</center>