Mike Jones
@groundwatermike.bsky.social
Chartered Geologist specialising in #hydrogeology. Ineson Lecturer 2021. Raising awareness of #groundwater here & still on X.
Nov-Jan outlook is for normal to below normal #groundwater levels across UK, perhaps low in E. England. Flow in groundwater-fed #rivers may remain below normal or low but normal to above in N&W UK. Limited rain may delay recovery in S&E until early 2026 hydoutuk.net/latest-outlo...
November 13, 2025 at 8:58 AM
Nov-Jan outlook is for normal to below normal #groundwater levels across UK, perhaps low in E. England. Flow in groundwater-fed #rivers may remain below normal or low but normal to above in N&W UK. Limited rain may delay recovery in S&E until early 2026 hydoutuk.net/latest-outlo...
Having visited Kynance Cove on a Reading Geological Society trip led by Jonathan Turner in September, checking out the fantastic serpentinites, some of us went back a few days later to take a look at the rocks from a different perspective
November 4, 2025 at 9:06 PM
Having visited Kynance Cove on a Reading Geological Society trip led by Jonathan Turner in September, checking out the fantastic serpentinites, some of us went back a few days later to take a look at the rocks from a different perspective
Upper reaches of #Thames remain dry for ~12km downstream from its source. No flow at Ewen, Somerford Keynes & Ashton Keynes but ~2km further downstream there are signs of recovery. As #groundwater levels begin to rise, slow #water flows appearing where #river was dry at the end of September
October 30, 2025 at 11:11 PM
Upper reaches of #Thames remain dry for ~12km downstream from its source. No flow at Ewen, Somerford Keynes & Ashton Keynes but ~2km further downstream there are signs of recovery. As #groundwater levels begin to rise, slow #water flows appearing where #river was dry at the end of September
Oct-Dec outlook: Below normal #river flow in groundwater-dominated catchments in S England & NE Scotland likely to persist. Potential for #groundwater recovery if significant rain over next 3 months. Elsewhere normal to above flows & groundwater likely hydoutuk.net/latest-outlo...
October 12, 2025 at 7:34 AM
Oct-Dec outlook: Below normal #river flow in groundwater-dominated catchments in S England & NE Scotland likely to persist. Potential for #groundwater recovery if significant rain over next 3 months. Elsewhere normal to above flows & groundwater likely hydoutuk.net/latest-outlo...
Great time last week, volunteering with @RiverThameCT on Sheep Brook. Fed by #groundwater from the Chalk #aquifer, it's a tributary of the Lewknor Brook. Before & after removing small rock weir to improve fish passage & enable natural flows to reshape channel & gravel bed
October 6, 2025 at 10:25 AM
Great time last week, volunteering with @RiverThameCT on Sheep Brook. Fed by #groundwater from the Chalk #aquifer, it's a tributary of the Lewknor Brook. Before & after removing small rock weir to improve fish passage & enable natural flows to reshape channel & gravel bed
Hydrological outlook for Sept-Nov is for normal to below normal #river flows across S&E but above normal in NW. Normal to below normal #groundwater levels most likely with some areas above normal & others notably low but gradually trending to normal hydoutuk.net/latest-outlo...
September 14, 2025 at 8:22 PM
Hydrological outlook for Sept-Nov is for normal to below normal #river flows across S&E but above normal in NW. Normal to below normal #groundwater levels most likely with some areas above normal & others notably low but gradually trending to normal hydoutuk.net/latest-outlo...
Why the sad face☹️ Yesterday, on the dry bed of #River Thames at Ashton Keynes, 7 miles from its source. Repeat of August 2022 when I looked hopefully upstream at same location. The result of exceptionally low #groundwater level in #Cotswolds #aquifer after prolonged dry weather
August 20, 2025 at 7:08 PM
Why the sad face☹️ Yesterday, on the dry bed of #River Thames at Ashton Keynes, 7 miles from its source. Repeat of August 2022 when I looked hopefully upstream at same location. The result of exceptionally low #groundwater level in #Cotswolds #aquifer after prolonged dry weather
Out on the #water, paddling down the River Kennet earlier this week. Despite the prolonged dry weather, it's looking good because of natural #groundwater flows from aquifers across the catchment and #river management.
August 14, 2025 at 7:19 AM
Out on the #water, paddling down the River Kennet earlier this week. Despite the prolonged dry weather, it's looking good because of natural #groundwater flows from aquifers across the catchment and #river management.
Fantastic Upper Thames Catchment Partnership meeting last week including walk along #River Coln hosted by @ernestcooktrust. With very dry weather the low flow is #groundwater from #Cotswolds #aquifers, enhanced by nature-based interventions creating pool-glide-riffle structure
July 19, 2025 at 7:35 PM
Fantastic Upper Thames Catchment Partnership meeting last week including walk along #River Coln hosted by @ernestcooktrust. With very dry weather the low flow is #groundwater from #Cotswolds #aquifers, enhanced by nature-based interventions creating pool-glide-riffle structure
Outlook for July to Sept is for normal to below normal #groundwater levels across the country with #river flows remaining below normal to low in central & eastern areas but within the normal range in western regions. Check report for local variability hydoutuk.net/latest-outlo...
July 11, 2025 at 8:58 AM
Outlook for July to Sept is for normal to below normal #groundwater levels across the country with #river flows remaining below normal to low in central & eastern areas but within the normal range in western regions. Check report for local variability hydoutuk.net/latest-outlo...
Outlook is for normal to below normal #groundwater levels in June-Aug but notably low possible in some #aquifers. Despite above normal to exceptionally low #river flows in June, likely summer flows range from normal in NW to below normal & low elsewhere hydoutuk.net/latest-outlo...
June 14, 2025 at 10:33 PM
Outlook is for normal to below normal #groundwater levels in June-Aug but notably low possible in some #aquifers. Despite above normal to exceptionally low #river flows in June, likely summer flows range from normal in NW to below normal & low elsewhere hydoutuk.net/latest-outlo...
May-July outlook: Normal #groundwater levels in southern Chalk but Below Normal in N England #aquifers & #Cotswolds. Below Normal #river flows most likely but exceptionally low in some catchments & Normal in W Scotland/Northern Ireland #Drought risk🤔
hydoutuk.net/latest-outlook…
hydoutuk.net/latest-outlook…
May 16, 2025 at 11:18 AM
May-July outlook: Normal #groundwater levels in southern Chalk but Below Normal in N England #aquifers & #Cotswolds. Below Normal #river flows most likely but exceptionally low in some catchments & Normal in W Scotland/Northern Ireland #Drought risk🤔
hydoutuk.net/latest-outlook…
hydoutuk.net/latest-outlook…
One of many sunken lanes cut through Lower Greensand rocks of W Sussex. Ancient tracks for people & animals. All can act as pathways for #rainfall #runoff to transport large quantities of #sediment from surrounding land to the #River Rother #geology #water #contamination #transhumance
April 14, 2025 at 3:51 PM
One of many sunken lanes cut through Lower Greensand rocks of W Sussex. Ancient tracks for people & animals. All can act as pathways for #rainfall #runoff to transport large quantities of #sediment from surrounding land to the #River Rother #geology #water #contamination #transhumance
With <30% to 70% average rainfall in March the outlook has changed. April-June: Normal to Above #groundwater levels in sandstone #aquifer & SE chalk but Normal/Below elsewhere. #River flows Below Normal but Normal/Above in SE chalk & normal in W Scotland hydoutuk.net/latest-outlook…
April 11, 2025 at 12:40 PM
With <30% to 70% average rainfall in March the outlook has changed. April-June: Normal to Above #groundwater levels in sandstone #aquifer & SE chalk but Normal/Below elsewhere. #River flows Below Normal but Normal/Above in SE chalk & normal in W Scotland hydoutuk.net/latest-outlook…
UK Hydrological Outlook for Feb-April: Normal to Above Normal #groundwater levels with Above Normal levels persisting in southern Chalk #aquifer. Similarly, Normal to Above #river flows in NW, Normal elsewhere except for Above Normal flows in southern England hydoutuk.net/latest-outlook…
February 12, 2025 at 6:54 PM
UK Hydrological Outlook for Feb-April: Normal to Above Normal #groundwater levels with Above Normal levels persisting in southern Chalk #aquifer. Similarly, Normal to Above #river flows in NW, Normal elsewhere except for Above Normal flows in southern England hydoutuk.net/latest-outlook…
Attractive & inconvenient perspectives of fluvial flooding on the River Loddon, with an unseen contribution from #groundwater
#water #river #flood
#water #river #flood
January 11, 2025 at 5:52 PM
Attractive & inconvenient perspectives of fluvial flooding on the River Loddon, with an unseen contribution from #groundwater
#water #river #flood
#water #river #flood
Unsurprising coincidence of #groundwater & #river level rise around River #Churn #water meadows, responding to Storm Bert. Shows the potential for groundwater flooding with levels rising above the ground surface & contributing to the complexity of what drives #flood events (2/2)
November 30, 2024 at 2:18 PM
Unsurprising coincidence of #groundwater & #river level rise around River #Churn #water meadows, responding to Storm Bert. Shows the potential for groundwater flooding with levels rising above the ground surface & contributing to the complexity of what drives #flood events (2/2)
Relict #water meadows on River #Churn from the air & on the ground, with former sluice control channels in evidence. How might they contribute to environmental improvement & #river #flood management🤔Need to account for the role of #groundwater in baseflow & flood impact (1/2)
November 30, 2024 at 2:12 PM
Relict #water meadows on River #Churn from the air & on the ground, with former sluice control channels in evidence. How might they contribute to environmental improvement & #river #flood management🤔Need to account for the role of #groundwater in baseflow & flood impact (1/2)
"Often out of sight, but never out of mind". There's #groundwater beneath our feet & around us in so many places. Rebecca's Well at Crazies Hill, Berkshire, fed by more permeable sand beds in the Lambeth Group, perched on top of the Chalk #aquifer
November 22, 2024 at 8:15 AM
"Often out of sight, but never out of mind". There's #groundwater beneath our feet & around us in so many places. Rebecca's Well at Crazies Hill, Berkshire, fed by more permeable sand beds in the Lambeth Group, perched on top of the Chalk #aquifer
"Often out of sight, but never out of mind". There's #groundwater beneath our feet & around us in so many places. The Holy Well at St Clether, Cornwall, a #spring fed from the Carboniferous Tintagel Volcanic Formation
November 22, 2024 at 7:56 AM
"Often out of sight, but never out of mind". There's #groundwater beneath our feet & around us in so many places. The Holy Well at St Clether, Cornwall, a #spring fed from the Carboniferous Tintagel Volcanic Formation
A cool day, in many ways, with Reading Geological Society taking in #springs fed by #groundwater from the Chalk #aquifer at Ewelme (right) in the @chilternsnl & the Upper Greensand aquifer at Brightwell (left) on the edge of @northwessexdowns, sharing #hydrogeology insights
November 20, 2024 at 7:17 PM
A cool day, in many ways, with Reading Geological Society taking in #springs fed by #groundwater from the Chalk #aquifer at Ewelme (right) in the @chilternsnl & the Upper Greensand aquifer at Brightwell (left) on the edge of @northwessexdowns, sharing #hydrogeology insights
Yes, it's the flow out of an attractive looking lake along a channel of the #River Churn in #Cirencester, but this is a #groundwater dominated environment, fed by the #Cotswolds limestone #aquifers. Who would have thought it🤔
November 16, 2024 at 11:18 PM
Yes, it's the flow out of an attractive looking lake along a channel of the #River Churn in #Cirencester, but this is a #groundwater dominated environment, fed by the #Cotswolds limestone #aquifers. Who would have thought it🤔