Flood Alert Info - Rivers Bran and Gwydderig

Area Description

Rivers Bran and Gwydderig at Llandovery .
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

The orange highlighted area on the map below outlines the 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


Flood Alert issued on 15 Mar 2020 03:29
South West
The rainfall is forecast to continue until approximately 8:00 AM on Sunday 15th March. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land during the next 12 hours. River levels in some parts of this catchment are expected to remain high into this afternoon. Impacts are generally only expected to be minor, we will continue to monitor the situation and will update this message if the situation changes.


Flood Alert issued on 9 Mar 2020 21:45
South West
The rainfall is forecast to ease by about 10:30PM on Monday the 9th of March but a second spell of rain will commence at approximately 1:45AM and continue until about 2:00PM on Tuesday the 10th of March. The River Bran at Llandovery is expected to reach a peak level at about 10:30PM on Monday the 9th of March, but there will be a second peak between 5:30AM and 6:30AM on Tuesday the 10th of March. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land during the next 24 hours.


Flood Alert issued on 28 Feb 2020 12:13
South West
Heavy rainfall associated with Storm Jorge is impacting the area. The rainfall is forecast to continue overnight until 5am on Saturday 29th February. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land over the weekend.


Flood Alert issued on 23 Feb 2020 19:05
South West
Further rainfall is forecast through Sunday night and into Monday morning. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land on Monday morning. Land is already saturated following recent flood events and surface water flooding is also possible.


Flood Alert issued on 22 Feb 2020 18:56
South West
This Flood Alert is issued in advance of the rainfall forecast to arrive overnight Saturday 22nd February into Sunday 23rd February. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land over the weekend. Land is already saturated following recent flood events and surface water flooding is also possible.


Flood Alert issued on 20 Feb 2020 10:56
South West
No additional information available


Flood Alert issued on 16 Feb 2020 19:13
South West
The heaviest rainfall has now cleared the area, but further showers are expected overnight into Monday 17th February. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land overnight.


Flood Alert issued on 15 Feb 2020 13:13
South West
The rainfall is forecast to continue until 9:30AM on Sunday the 16th of February. Rain is expected to be largely continuous over this period with some higher intensity bursts expected during Saturday evening and overnight into Sunday. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land during the next 24 hours.


Flood Alert issued on 9 Feb 2020 05:31
South West
The rainfall is forecast to 1pm on Sunday 9th February. Heavy showers are expected to continue as Storm Ciara takes hold. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land during the next 24 hours.


Flood Alert issued on 14 Jan 2020 15:46
South West
The rainfall is forecast to continue until 7:00 PM on Tuesday the 14th of January. The River Bran at Llandovery is expected to exceed the flood alert threshold at 4:30 PM and reach a peak level at about 6:00 PM. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land during the next 12 hours.


Flood Alert issued on 11 Jan 2020 17:43
South West
The rainfall is forecast to continue until 1:30 AM on Sunday the 12th of January. The River Bran at Llandovery is expected to exceed the flood alert threshold by about 8:00 PM and reach a peak level by 2:00 AM on Sunday the 12th of January. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land during the next 12 hours.


Flood Alert issued on 9 Jan 2020 02:39
South West
The rainfall is forecast to continue until 3:00 AM on Thursday the 9th of January. The heaviest rainfall has now cleared the area, but showers may persist for several hours. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land during the next 12 hours.


Flood Alert issued on 14 Dec 2019 20:50
South West
The rainfall is forecast to continue until 4:30 AM on Sunday the 15th of December. The River Bran at Llandovery is forecast to exceed the flood alert level at 1:00 AM on Sunday the 15th of December and remain above this threshold until approximately 4:00 AM. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land during the next 12 hours.


Flood Alert issued on 12 Dec 2019 14:14
South West
Heavy rainfall showers are forecast to continue throughout the afternoon and into the evening of Thursday 12th December. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land overnight.


Flood Alert issued on 11 Dec 2019 13:36
South West
The heaviest rainfall has now cleared the area but further showers are expected overnight on Wednesday 11th December, and during the day on Thursday 12th December. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land overnight into Thursday 12th December.


Flood Alert issued on 10 Dec 2019 17:25
South West
The rainfall is forecast to continue into the early evening on Tuesday 10th and then ease. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land during the next 12 hours.


Flood Alert issued on 14 Nov 2019 11:52
South West
The rainfall is forecast to continue through the rest of the morning and afternoon, today Thursday 14th November. A gradual clearance of the rain from this catchment will occur this evening. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land this afternoon and evening, Thursday 14th November.


Flood Alert issued on 2 Nov 2019 21:26
South West
The rainfall is forecast to continue until 03:00 AM on Sunday 3rd November. The heaviest rainfall is expected to continue for several hours. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land on Saturday 2nd November evening and into Sunday 3rd November during the next 24 hours.


Flood Alert issued on 26 Oct 2019 20:57
South West
The heaviest rainfall has now cleared the areas. The combination of ground conditions and existing river levels gives a high risk of flooding of low-lying land overnight.


Flood Alert issued on 25 Oct 2019 16:38
South West
The current period of rainfall is forecast to persist until late morning on Saturday the 26th of October, rainfall will become heavy at times. River levels in this area will rise this afternoon and will become high this evening and will remain high through Saturday. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land over the weekend. We will continue to monitor the situation and we will update this message if the situation changes.


Flood Alert issued on 12 Oct 2019 21:45
South West
A band of persistent rainfall, heavy at times is forecast overnight on Sunday the 13th October. River levels are expected to rise during the early morning and stay high into the afternoon. Only relatively minor impacts are currently expected. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land during the next 24 hours. We will monitor the situation and update this message if the situation changes.


Flood Alert issued on 11 Oct 2019 13:36
South West
The heaviest rainfall has cleared the area, river levels in the Bran and Gwydderig will continue to rise for a short period and then will remain high into this evening. Only very minor impacts are expected. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a small risk of flooding of low-lying land during the next 12 hours. We will update this message if the situation changes.


Flood Alert issued on 28 Sep 2019 19:01
South West
The rainfall is forecast to ease by 02:00 AM on Sunday 29th September, although there may be some very heavy isolated downpours during the course of the remainder of the night. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land overnight.


Flood Alert issued on 16 Mar 2019 16:40
South West
The rainfall is forecast to continue until 08:00 PM today 16/03/2019. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land today. 16/03/2019 and over the weekend.


Flood Alert issued on 12 Mar 2019 00:12
South West
The rainfall is forecast to continue until 1:30 PM on Tuesday the 12th of March. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land during the next 24 hours. The River Bran at Llandovery is forecast to exceed the flood alert threshold at about 6:00 AM on Tuesday the 12th of March and reach a peak level by about 12:15 PM on the same day.


Flood Alert issued on 6 Dec 2018 16:32
South West
Heavy rainfall is forecast in the early hours of the morning, Friday 7th December 2018. River levels are expected to peak around 7:30 AM. At this point there are uncertainties regarding the rainfall quantities, confidence for this flood alert are low. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land during the next 24 hours.


Flood Alert issued on 5 Dec 2018 16:18
South West
The heaviest rainfall has now cleared the area. The combination of ground conditions and existing river levels gives a high risk of flooding of low-lying land overnight, Wednesday 5th December.


Flood Alert issued on 5 Dec 2018 13:11
South West
The rainfall is forecast to continue until 6 PM on Wednesday 5th December 2018. The heaviest rainfall has now cleared the areas. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land during the next 12 hours.


Flood Alert issued on 3 Dec 2018 09:02
South West
The rainfall is forecast to continue until 2 PM on Monday 3rd December 2018 but the heaviest rainfall is forecast to clear the area by 12:00 noon on Monday 3rd December 2018. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land today Monday 3rd December 2018 during the next 12 hours.


Flood Alert issued on 12 Nov 2018 14:42
South West
River levels in the Bran and Gwydderig catchments are responding to heavy rainfall showers, further isolated showers are expected into this evening on Monday 12th November. River levels will remain elevated overnight, but only minor impacts to low lying land and roads are expected. We will continue to monitor the situation and update this message on our internet site and on Floodline if the situation changes.


Flood Alert issued on 11 Oct 2018 18:15
South West
A prolonged period of rainfall is expected from the early hours of Friday morning 12th of October, until the Sunday the 14th of October. River levels are expected to rise during Friday morning and will remain high over the weekend giving a high risk of flooding to low-lying land and roads. You can monitor the situation using our river levels online service on the Natural Resources Wales website. We will update this message tomorrow as confidence in the forecast improves.


Flood Alert issued on 11 Oct 2018 17:38
South West
A prolonged period of rainfall is expected from the early hours of Friday morning 12th of September, until the Sunday the 14th of September. River levels are expected to rise during Friday morning and will remain high over the weekend giving a high risk of flooding to low-lying land and roads. You can monitor the situation using our river levels online service on the Natural Resources Wales website. We will update this message tomorrow as confidence in the forecast improves.


Flood Alert issued on 21 Sep 2018 15:55
South West
The river level in the river Bran in Llandovery is still high following heavy rainfall during Thursday 20th September and during the early hours of Friday the 21st September. The heaviest rainfall has cleared the area and only small isolated showers are forecast in the catchment through Friday. The river level is currently receding and will continue to recede into the evening when this message will be reviewed.


Flood Alert issued on 20 Sep 2018 15:30
South West
The prolonged heavy rainfall is forecast to continue this afternoon and evening, Thursday the 20th of September. The rain is forecast to begin clearing from around 10 PM, leaving scattered showers through the rest of the night. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land this Thursday evening, and overnight into Friday morning.


Flood Alert issued on 21 Jan 2018 13:56
South West
The rainfall is forecast to continue until 4:00 PM today, 21st January. The heaviest rainfall is expected to continue. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land during the next 12 hours


Flood Alert issued on 2 Jan 2018 22:59
South West
The heaviest rainfall has now cleared the area. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land during the next 12 hours


Flood Alert issued on 13 Dec 2017 15:10
South West
The rainfall is forecast to continue until 08:00 PM on 13th December 2017. The heaviest rainfall is expected to continue until that time. The combination of ground conditions, snow melt, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land during the next 12 hours.


Flood Alert issued on 27 Nov 2017 03:57
South West
The rainfall is forecast to continue until 04:30 AM on 27th November 2017. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land overnight. .


Flood Alert issued on 22 Nov 2017 18:48
South West
The rainfall is forecast to continue until around midnight today, Wednesday 22nd of November. Bands of heavy showers are expected which will affect river levels in the area. The combination of ground conditions, existing river levels and forecast rainfall quantities gives a high risk of flooding of low-lying land during the next 12 hours. The upper reaches of the Bran and smaller watercourses in the area may be affected as river levels react to these showers. As water levels rise the road at Llwyn Jack may be affected .