Flood Alert Info - Groundwater flooding in Twyford and Hensting

Area Description

Areas at risk of groundwater flooding in Twyford and Hensting in Hampshire.
This is a Flood Alert Area. For this area the highest level of flood notification that you will receive is a Flood Alert. No Flood Warnings or Severe Flood Warnings are issued for this area.
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There are no Flood Alerts currently in force for this area. See below for historical flood warnings.

Area Covered by this Flood Alert

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Flood Alert History

Number of historic Flood Alerts that have previously been recorded for this area:
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Historical Flood Alert Messages for this Area

  • We have only been collating detailed flood messages since May 2017.
  • Each Flood Alert may have multiple updates. The messages listed below may therefore be greater than the number of alerts detailed in the Flood Alert table above.

Flood Alert issued on 1 Mar 2021 11:43
Groundwater
The groundwater level at West Meon Hut remains very high, but it is now slowly falling. In the last 7 days, only 1mm of rain was recorded in Otterbourne, and groundwater has lowered by 5 cm. At present, we do not expect that cellars are flooded in Twyford. Over the next week, the weather should remain fairly dry, except on Wednesday (03/03/21) and Thursday (04/03/21) when small amounts of rain are forecast (up to 10mm expected). Rain this week may cause a very small rise (no more than 5 cms) in level, but it won’t cause flooding. On Friday (05/03/21) as long as the 10 day weather outlook remains favourable, then we will remove this Flood Alert. We continue to monitor the forecast. Given how high the groundwater level remains, we would still like residents to remain prepared for potential impacts. A very wet end to March and beginning of April could still cause flooding. This Flood Alert will be updated or removed by 12:00 on Friday 5th March 2021.


Flood Alert issued on 22 Feb 2021 11:46
Groundwater
The groundwater level at West Meon Hut remains high. In the last 7 days, rain has fallen fairly persistently and evenly. 30mm has been recorded in Otterbourne. At West Meon Hut, groundwater has currently now stabilised. It has stabilised at a level which is exceptionally close (approximately 0.1m below) where a small number of cellars can experience flood impacts in Twyford. This week, the weather should remain fairly dry. Although currently stable, the groundwater level may still fluctuate a little over the next few days. Some cellar flood impacts in Twyford therefore remain a possibility. However, with drier weather, it is also possible that the level could just begin to fall, before onset of impacts actually occur. We continue to monitor the forecast. If you use pumps to help reduce water levels, please ensure they can operate, in case they should be required over the next few weeks. This Flood Alert will be updated by 12:00 01/03/2021.


Flood Alert issued on 15 Feb 2021 15:50
Groundwater
The Groundwater level at West Meon Hut is high and rising. The level is still increasing as a result of the wet weather recorded at the end of January and beginning of February. The current rate of rise at West Meon is 0.1m per day. At present, there are no impacts. However, from today (Monday 15/02/21) through to Friday (19/02/21) rain is now forecast each day. Groundwater will continue to increase this week and from Friday (19/02/21) onwards, the level could be high enough to impact a small number of cellars (1-2) in Twyford. Next week, very minor impact flooding may begin to affect the road at Hensting Lane. Currently, we are not expecting significant impacts in the villages. We continue to monitor the forecast. If you use pumps to help reduce water levels, please take this time to ensure they can operate. This Flood Alert will be updated by 12:00 on Monday 22nd February 2021.


Flood Alert issued on 8 Apr 2020 12:21
Groundwater
The Groundwater level at West Meon Hut continues to fall. In the last 5 days, the level has reduced by more than 0.5m. Over the next 5 days, the weather is mostly dry, but it will be interspersed with periods of showery rain, especially through Easter weekend. Given the current forecast totals, the rainfall should not cause groundwater levels to rise. By the end of this week (and if it hasn’t already) groundwater should stop causing impacts to property in Twyford. Next week, as long as the weather forecast remains favourable, then we will remove this Alert. This Flood Alert will be updated or removed by 15:00 on Wednesday 15/04/2020


Flood Alert issued on 30 Mar 2020 10:42
Groundwater
The Groundwater level at West Meon Hut is falling, currently by 0.1 m per day. In the last 7 days, the level has fallen by more than 0.5 m. Over the next 5 days, the weather will remain fairly dry and the situation will continue to improve. Given the current rate of fall and the continued dry outlook, it will be around 10 days before groundwater ceases to cause impacts in Twyford and at Hensting Lane. We continue to monitor the forecast. If you use pumps to help reduce water levels, please ensure they can operate. This Flood Alert will be updated by 15:00 on Wednesday 08/04/2020.


Flood Alert issued on 23 Mar 2020 11:03
Groundwater
The Groundwater level at West Meon Hut is high, but is now falling. The current rate of fall is 8 cm per day. At Chalk Dale (Twyford), the level has risen a little, but should stabilise this week. We expect a small number of cellars to be flooded in Twyford. Groundwater flow will continue to cause minor impact flooding to the road at Hensting Lane. Over the next 5 days, the weather should remain fairly dry, and levels will continue to fall. Flood impacts will lessen, and the situation will improve, although any improvement, may not be noticeable until next week. We continue to monitor the forecast. If you use pumps to help reduce water levels, please ensure they can operate. This Flood Alert will be updated by 15:00 on Monday 30/03/2020.


Flood Alert issued on 12 Mar 2020 12:12
Groundwater
The Groundwater level at West Meon Hut is high and slowly rising. The current rate of rise is less than 10cm per day. We expect a small number of cellars to be flooded in Twyford. Groundwater flow will continue to cause minor impact flooding to the road at Hensting Lane. Over the next 5 to 10 days, the weather should be much drier, except for this weekend (14/03/2020 and 15/03/2020) when 10 to 15mm of rain is forecast. Rainfall this weekend will cause levels to rise a little. Next week, it may just reach the threshold where a larger number of cellars are affected in Twyford. With drier weather forecast next week, the level at West Meon should begin to stabilise. If you use pumps to help reduce water levels, please ensure they can operate. We would like residents in Twyford to remain prepared for groundwater flood impacts over the next few weeks. This Flood Alert will be updated by 15:00 on Tuesday 24/03/2020.


Flood Alert issued on 5 Mar 2020 13:32
Groundwater
The Groundwater level at West Meon Hut is high and currently rising in response to heavy rainfall recorded today (05/03/2020). We expect a small number of cellars to be flooded in Twyford. Groundwater flow will continue to cause minor impact flooding to the road at Hensting Lane. Tomorrow and Saturday (07/03/2020) should remain fairly dry, but from Sunday (08/03/2020) onwards, small amounts of rain are forecast. Over the next few days, it is unlikely that impacts will change significantly. However, the level is only 0.5m below a threshold where we may see an increase in the number of cellars which are affected in Twyford. Much now depends on how much rain falls over the next 2 to 3 weeks. We continue to monitor the forecast. If you use pumps to help reduce water levels, please ensure they can operate. We would like residents in Twyford to remain prepared for groundwater flood impacts over the next few weeks. This Flood Alert will be updated by 15:00 on Thursday 12/03/2020.


Flood Alert issued on 27 Feb 2020 09:40
Groundwater
The Groundwater level at West Meon Hut is high and fairly stable, but is immediately rising a little, each time it rains. We expect a small number of cellars will be flooded in Twyford. Groundwater flow will continue to cause minor impact flooding to the road at Hensting Lane. Tomorrow and into Saturday (29/02/2020), further rain is forecast. Levels will rise a little, but it is unlikely that impacts will change significantly. Next week, unsettled weather will continue to affect the South. Should further heavy rain affect the area anytime in the next few weeks, then cellar flooding may affect a greater number of properties in Twyford. We continue to monitor the forecast. If you use pumps to help reduce water levels, please ensure they can operate. We would like residents in Twyford to remain prepared for groundwater flood impacts over the next few weeks. This Flood Alert will be updated by 15:00 on Thursday 05/03/2020.


Flood Alert issued on 20 Feb 2020 10:17
Groundwater
The Groundwater level at West Meon Hut is high and rising, although the rate of rise is now beginning to slow. In the last 24 hours, the level has increased by 0.3m. Currently, we expect cellar flooding will occur in a very small number of properties (1-2) in Twyford. Groundwater flow will continue to cause minor impact flooding to the road at Hensting Lane. Over the next 5 days, a very small amount of rain is expected each day. The level at West Meon Hut will rise for at least the next 7 days. Without further heavy rainfall in that time, it may just peak below the level, where an increased number of cellars would be affected in Twyford. We continue to monitor the forecast. If you use pumps to help reduce water levels, please ensure they can operate. We would like residents in Twyford to remain prepared for groundwater flood impacts over the next few weeks. This Flood Alert will be updated by 12:00 on Thursday 27/02/2020.


Flood Alert issued on 17 Feb 2020 08:42
Groundwater
The Groundwater level at West Meon Hut is high and rising. In the last 3 days, 76mm of rain has been recorded at Warnford, which is more than February’s monthly average rainfall. The level has risen by 0.9m in the last 24 hours. In the next 2 to 3 days rising groundwater could cause cellar flooding to a very small number of properties (1-2) in Twyford. Groundwater flow will continue to flood the road at Hensting Lane. Over the next 5 days, a very small amount of rain is expected each day, which will generally keep levels high and rising. Currently, we are not expecting significant impacts in the villages, but will issue further advice as levels rise. We continue to monitor the forecast. If you use pumps to help reduce water levels, please ensure they can operate. This Flood Alert will be updated by 12:00 on Friday 21/02/2020.