Flood Alert Info - Groundwater flooding in the Candovers and Old Alresford

Area Description

Areas at risk of groundwater flooding in Preston Candover, Chilton Candover, Brown Candover and Old Alresford 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.
Get a Flood Insurance Quote for your Home or Business
There are no Flood Alerts currently in force for this area. See below for historical flood warnings.

Area Covered by this Flood Alert

Download the Flood Assist App
Download the Flood Assist App to view current flood warnings, check your flood risk, and create your digital flood action plan.
Sign up for Live Flood Warnings & Alerts
Sign up to receive live flood warning and alert updates for your location using data from the Environment Agency, SEPA and NRW.

Flood Alert History

Number of historic Flood Alerts that have previously been recorded for this area:
We can provide a Flood Insurance Quote for properties in the Basingstoke area

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 15 Mar 2021 11:01
Groundwater
Groundwater levels remain high, but they continue to fall. In the last 7 days, at Preston Candover the level has reduced by 4cm. In Old Alresford, the level has lowered by 6cm. From tomorrow (Tuesday 16/03/21) through to Friday (19/03/21) only very small amounts of rain (2 to 5mm) are forecast each day. The weather should also remain fairly settled next week. Drier weather means that the situation will improve, and groundwater levels will fall in both locations. At the lower end of Preston Candover village, the need to pump water from cellars will continue over the next few weeks. However, if the 10 day weather outlook from next Wednesday (24/03/21) remains favourable, then we will look to remove this Flood Alert. We continue to monitor the forecast. Please ensure that any pumps used to manage water levels and protect property can operate. This message will be updated or removed by 12:00 on Wednesday 24th March 2021.


Flood Alert issued on 8 Mar 2021 10:41
Groundwater
Groundwater levels remain high, but following another week of fairly dry weather, they continue to fall, albeit slowly. In Preston Candover and Old Alresford, levels have lowered by 3cm in the last 7 days. The weather remains dry until Wednesday (10/03/21), further rain is then forecast. Between Wednesday and Friday (12/03/21), forecast rainfall totals are not overly large (10 to 20 mm) but it may cause a very slight increase (5 cms) in groundwater level. Over the next week, the current situation will not change significantly. At the lower end of Preston Candover village, the need to pump water from cellars will continue. In Old Alresford, a small number of cellars and septic tank operation could also remain affected. We continue to monitor the forecast. Pumps used to reduce water levels will still be required over the next few weeks. This message will be updated by 12:00 on Monday 15 March 2021.


Flood Alert issued on 24 Feb 2021 10:50
Groundwater
Groundwater remains high. In the last 7 days, 20mm of rain has been recorded in Bishop’s Sutton. In Preston Candover, the level is just stabilising. In Old Alresford, the level has started to fall, lowering by 6 cm in the last 4 days. From today (Wednesday 24/02/21) and for the next 10 days, the weather should remain fairly dry. At the lower end of Preston Candover village, the need to pump water from cellars will continue throughout this time. In Old Alresford, a small number of cellars and septic tank operations could also remain affected. However, drier weather brings an improved outlook. The level in Old Alresford will continue to fall. A decrease in level is also expected in Preston Candover (the rate of fall will be very slow). We continue to monitor the forecast. Pumps used to reduce water levels will still be required over the next few weeks. This message will be updated by 12:00 on 08/03/2021 or sooner, if a change in forecast suggests heavy rain is expected.


Flood Alert issued on 17 Feb 2021 10:55
Groundwater
Groundwater levels are high and continue to slowly rise. In the last 3 days, 21mm of rain has been recorded in Bishop’s Sutton. In the last week, at Preston Candover, the level has increased by 0.13m (half the rate of rise in the previous week). In Old Alresford, it has increased by 0.17m. At the lower end of Preston Candover village, the need to pump water from cellars will continue. In Old Alresford, a small number of cellars and septic tank operation will be affected. Rain is forecast today (Wednesday 17/02/21) through to Sunday (21/02/21) with 20mm to 40mm expected. Groundwater will rise over the next 7 days, and the rate of rise could also increase. However, the current situation will not alter significantly, and more widespread groundwater flooding in the villages is not currently expected. We continue to monitor the forecast. If you use pumps to help reduce water levels, please ensure they can operate. This message will be updated by 12:00 on 24/02/2021.


Flood Alert issued on 10 Feb 2021 11:37
Groundwater
Groundwater levels are high and continue to slowly rise. In the last 7 days, 20mm of rain was recorded in Bishop’s Sutton. In Preston Candover and Old Alresford, levels have increased by 0.24m, but they are just beginning to stabilise. At the lower end of Preston Candover village, the need to pump water from cellars will continue over the next week. In Old Alresford, a small number of cellars and, septic tank operation could be affected. The weather remains dry until Sunday (14/02/21), when snow or rain might replace the drier conditions. Over the next 2 to 3 days, groundwater will rise, but by no more than 1-2 cms each day. The current situation will not alter significantly. If it does remain dry next week, levels may begin to fall. Widespread groundwater flooding in the villages is not currently expected. We continue to monitor the forecast. If you use pumps to help reduce water levels, please ensure they can operate. This message will be updated by 12:00 on 17/02/2021


Flood Alert issued on 3 Feb 2021 10:54
Groundwater
Groundwater levels are high and continue to slowly rise. In the last 7 days, 40mm of rain has been recorded in Bishop’s Sutton. In Preston Candover, the level has increased by 0.3 m. In Old Alresford, by 0.2 m. At the lower end of Preston Candover village, the need to pump water from cellars will continue over the next week. In Old Alresford, septic tanks may be prevented from operating effectively, and levels are now high enough to impact a small number of cellars. Over the next 5 days, the weather improves, with only a small amount of rain forecast each day. Groundwater will continue to rise, but only by a couple of centimeters each day. The current situation will therefore not alter significantly. Widespread groundwater flooding in the villages is not currently expected. 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 Wednesday 10/02/2021.


Flood Alert issued on 27 Jan 2021 11:02
Groundwater
Groundwater levels remain high, and continue to slowly rise. In the last 7 days, the level at Preston Candover has increased by 16 cms. In Old Alresford, it has increased by 4 cms. At the lower end of Preston Candover village, some cellars are currently affected. The weather remains unsettled over the next 7 days, with small amounts of rain forecast each day. Groundwater will continue to rise throughout this time. The increase in level will be largely similar to the increase recorded over the last week. Towards the end of next week, groundwater may prevent septic tanks from operating effectively in Old Alresford. Widespread groundwater flooding, which would affect a larger number of properties in the villages, is not currently expected. 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 Wednesday 03/02/2021.


Flood Alert issued on 27 Jan 2021 10:39
Groundwater
Groundwater levels remain high, and continue to slowly rise. In the last 7 days, the level at Preston Candover has increased by 16 cms. In Old Alresford, it has increased by 4 cms. At the lower end of Preston Candover village, some cellars are currently affected. The weather remains unsettled over the next 7 days, with small amounts of rain forecast each day. Groundwater will continue to rise throughout this time. The increase in level will be largely similar to the increase recorded over the last week. Towards the end of next week, groundwater may prevent septic tanks from operating effectively in Old Alresford. Widespread groundwater flooding, which would affect a larger number of properties in the villages, is not currently expected. 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 Wednesday 03/02/2021.


Flood Alert issued on 20 Jan 2021 10:40
Groundwater
Groundwater levels remain high and continue to rise very slowly. In the last 8 days, almost half a month’s rain (42mm) has been recorded at Bishop’s Sutton. In Preston Candover, the groundwater level has risen by 7cm. In Old Alresford, it has only risen by 2cm. Rain continues today (20/01/2021) with a further 15mm expected. From Thursday (21/01/21) to Sunday (24/01/21) only very small amounts of rain are then forecast. Over the next 5 days, there could be two outcomes. The rain may just be enough to cause the onset of cellar flooding in a very small number of cellars at the lower end of Preston Candover village. Or, it may keep the groundwater a few centimetres below a level where cellar flood impacts occur. Widespread groundwater flooding is not expected. 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 Wednesday 27/01/2021.


Flood Alert issued on 11 Jan 2021 12:16
Groundwater
At Preston Candover and Old Alresford, groundwater levels are high, but they are just stabilising following 3 months of above average rainfall (recorded at Bishop’s Sutton). At the lower end of Preston Candover village, groundwater is close to emerging in cellars. From Monday (11/01/2021) until Friday (15/01/2021) further rain is forecast. Forecast totals are not overly large, but if this rain does affect the catchment, then groundwater levels will continue to rise (albeit very slowly) over the next 7 to 10 days. From this time onwards, it may begin to prevent septic tanks from operating effectively in Old Alresford. It may also affect cellars in a very small number of properties at the lower end of Preston Candover village. Widespread groundwater flood impacts are not currently expected. 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 Wednesday 20/01/2021.


Flood Alert issued on 15 Apr 2020 10:04
Groundwater
The groundwater level continues to fall. In the last 7 days, the level has reduced by more than 0.17 m in both Preston Candover and Alresford. The weather remains dry until Friday (17/04/2020), when rain and then heavy showers are forecast into the weekend. Next week, the weather is similar with further showers possible at times. It is unlikely that this rainfall will cause groundwater levels to rise. The overall situation will continue to improve, although given the current rate of fall, it will be at least 4 weeks before groundwater stops causing impacts in the villages. However, next week, if the weather outlook remains favourable, and we are confident levels will continue to fall, then we will look to remove this Alert. We continue to monitor the forecast. This Flood Alert will be updated or removed by 15:00 on Wednesday 22/04/2020.


Flood Alert issued on 8 Apr 2020 12:21
Groundwater
Groundwater levels continues to fall. In the last 5 days, the level has reduced by more than 0.1m in both Preston Candover and Alresford. 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. It will be at least another 4 to 6 weeks before groundwater stops causing impacts in the villages. We continue to monitor the forecast. This Flood Alert will be updated by 15:00 on Wednesday 15/04/2020.


Flood Alert issued on 30 Mar 2020 10:41
Groundwater
The groundwater level at Preston Candover and in Alresford is high, but it is falling in both locations. At Preston Candover, the current rate of fall is between 1 and 2 cm per day. In Alresford, the current rate of fall is 3 cm per day. Over the next few weeks, groundwater will continue to prevent septic tanks from operating effectively in Old Alresford. In Preston Candover, groundwater will still affect a small number of cellars. Over the next 5 days, the weather should remain fairly dry, and levels will continue to fall. Given the current rate of fall, it will be at least 6 to 8 weeks before groundwater stops causing impacts in the villages. We continue to monitor the forecast. Please ensure any pumps used to protect property can operate. This Flood Alert will be updated by 15:00 on Wednesday 08/04/2020


Flood Alert issued on 23 Mar 2020 11:09
Groundwater
The groundwater level at Preston Candover and Alresford is high, but it is stable. In Old Alresford, groundwater will be preventing septic tanks from operating effectively. A small number of properties will be experiencing cellar flooding in Preston Candover. Over the next 5 days, the weather should remain fairly dry, and levels should begin to fall. Initially, any rate of fall will be slow. We continue to monitor the forecast. Please ensure any pumps used to protect property can operate. This Flood Alert will be updated by 15:00 on Monday 30/03/2020.


Flood Alert issued on 12 Mar 2020 12:19
Groundwater
The groundwater level at Preston Candover and in Alresford is high, but is just stabilising from the heavy rainfall recorded over the last few weeks. Groundwater will be preventing septic tanks from operating effectively in Old Alresford. A small number of properties will be experiencing cellar flooding in Preston Candover. 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, perhaps by 2 to 3 cm. Drier weather forecast next week, means that levels should stabilise, but in terms of height, will be very close to a threshold where a larger number of cellars can be affected in Preston Candover and Northington. We continue to monitor the forecast. Please ensure any pumps used to protect property can operate. This Flood Alert will be updated by 15:00 on Tuesday 24/03/2020.


Flood Alert issued on 5 Mar 2020 14:46
Groundwater
The groundwater level at Preston Candover is high. It had stabilised in response to the heavy rainfall over the last few weeks, but is now rising in response to the rainfall recorded today. Groundwater will be preventing septic tanks from operating effectively in Old Alresford. A small number of properties will be experiencing cellar flooding in Preston Candover. Tomorrow and Saturday (07/03/2020) should remain fairly dry. From Sunday (08/03/2020) onwards, small amounts of rain are forecast. Over the next few days, impacts won’t change significantly. However, much now depends on rainfall over the next 2 to 3 weeks. It is still possible that a larger number of cellars in Preston Candover and Northington will be affected this spring. We continue to monitor the forecast. Please ensure any pumps used to protect property can operate. This Flood Alert will be updated by 15:00 on Thursday 12/03/2020.


Flood Alert issued on 27 Feb 2020 10:06
Groundwater
The groundwater level at Preston Candover is high, but just stabilising from the heavy rainfall recorded in the last few weeks. Groundwater will be preventing septic tanks from operating effectively in Old Alresford. A small number of properties will be experiencing cellar flooding in Preston Candover. Tomorrow and into Saturday (29/02/2020), further rain is forecast. This will cause levels to rise a little, but it is unlikely that impacts will alter significantly. Next week, unsettled weather will continue to affect the South. Further heavy or continued rainfall over the next couple of weeks, would flood a larger number of cellars and roads in Preston Candover and at Northington. We continue to monitor the forecast. We would like communities to prepare for continued 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 15:43
Groundwater
The groundwater level at Preston Candover is high and rising, although the rate of rise is just starting to slow. In the last 24 hours it has increased by 0.1m. This week, we expect groundwater to prevent septic tanks from operating effectively in Old Alresford. Some properties are experiencing cellar flooding in Preston Candover. Over the next 5 days, small amounts of rain are expected each day. Groundwater will rise for at least the next 8 days. Without further heavy rainfall in that time, it may just peak below the level where cellar flooding affects a larger number of properties in the Candovers and in Northington. We continue to monitor the forecast. We would like communities to prepare 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 20 Feb 2020 10:27
Groundwater
The groundwater level at Preston Candover is high and rising, although the rate of rise is just starting to slow. In the last 24 hours, it has increased by 0.1m. This week, we expect groundwater to prevent septic tanks from operating effectively in Old Alresford. Over the next 5 days, small amounts of rain are expected each day. Groundwater will rise for at least the next 8 days. Without further heavy rainfall in that time, it may just peak below the level where cellar flooding affects Northington and The Candovers, but could be very close. We continue to monitor the forecast. We would like communities to prepare 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 12:43
Groundwater
At Preston Candover, groundwater is high and rising, currently by 0.4m a day. In the last 3 days, 76mm of rain has been recorded at Bishop’s Sutton, which is more than February’s monthly average rainfall. In the next 5 days, groundwater will prevent septic tanks from operating effectively in Old Alresford. Levels need to be much higher than they are now, before they cause cellar flooding in The Candovers and Northington, but we will issue further advice as levels rise. Over the next 4 days, small amounts of rain are expected each day, and levels will continue to increase. We continue to monitor the forecast. We would like communities to prepare for groundwater flood impacts over the next few weeks. This Flood Alert will be updated by 12:00 on Friday 21/02/2020.