Flood Warning Info - River Wnion at Dolgellau

River Wnion at Dolgellau

Parts of Dolgellau from Arran Road to Pont Pandy'r-odyn, including Eldon Square and Marian Mawr Enterprise Park.

This is a Flood Warning Area. For this area, you may receive Flood Warnings or Severe Flood Warnings.

Current Flood Warning Status

No current warning

Area Covered by this Flood Warning

The red highlighted area on the map below outlines the area covered by this Flood Warning.

Flood Warning History

Number of historic Flood Warnings that have previously been recorded for this area.

Historical Flood Warnings for this Area

Flood Alert

Flood Alert issued on 1 Dec 2025 11:49

North

River levels are rising. Flooding to property is possible. Flooding of low-lying land and roads is expected. The A470 between Llanelltyd and Cross Foxes could be affected by flooding. The rainfall is forecast to continue until approximately late afternoon. We will continue to monitor the situation.

Flood Alert

Flood Alert issued on 20 Sep 2025 17:16

North

River levels are rising. We will continue to monitor the situation.

Flood Alert

Flood Alert issued on 17 Sep 2025 08:17

North

River levels are rising. Impacts may occur from 09:15. The weather conditions are deteriorating. We will continue to monitor the situation.

Flood Alert

Flood Alert issued on 1 Jan 2025 10:34

North

River levels are expected to fall. The heaviest rainfall has now cleared this area. We will continue to monitor the situation.

Flood Warning

Flood Warning issued on 1 Jan 2025 00:36

North

River levels are rising. The River Wnion at Dolgellau is expected to peak between 2am Wednesday morning and 4am Wednesday morning. The rainfall is forecast to continue until approximately 6am Wednesday morning. The weather conditions are expected to deteriorate further. We will continue to monitor the situation. This message will be updated as the situation changes.

Flood Alert

Flood Alert issued on 31 Dec 2024 19:01

North

River levels are rising. The rainfall is forecast to continue until approximately 10AM Wednesday morning 1st January. The weather conditions are expected to deteriorate. We will continue to monitor the situation.

Flood Alert

Flood Alert issued on 7 Dec 2024 03:18

North

River levels are rising. The rainfall is forecast to continue until approximately 9am Saturday Morning. The weather conditions are expected to deteriorate further. We will continue to monitor the situation.

Flood Alert

Flood Alert issued on 23 Nov 2024 13:13

North

River levels are rising. Flooding to property is possible. Flooding of low-lying land and roads is expected. The rainfall is forecast to continue throughout the day. We will continue to monitor the situation.

Flood Alert

Flood Alert issued on 23 Jan 2024 14:04

North

Storm Jocelyn is affecting this region. River levels are expected to be above normal. Flooding of Low-lying land and roads is expected. . Property flooding is not expected at this time, although some localised flooding problems may result from surface water. We will continue to monitor the situation. You can monitor the situation in your area by using our 'River Levels, Rainfall and Sea Data' on our website. For more information on our Flood Alerts and how we issue them, please visit the ‘How we forecast floods, issue warnings and assess flood risk’ page on our website.

Flood Alert

Flood Alert issued on 21 Jan 2024 20:33

North

Storm Isha is affecting this region. River levels are expected to be above normal. Flooding of Low-lying land and roads is expected. . Property flooding is not expected at this time, although some localised flooding problems may result from surface water. We will continue to monitor the situation. You can monitor the situation in your area by using our 'River Levels, Rainfall and Sea Data' on our website. For more information on our Flood Alerts and how we issue them, please visit the ‘How we forecast floods, issue warnings and assess flood risk’ page on our website

Flood Alert

Flood Alert issued on 27 Dec 2023 11:46

North

River levels are expected to be above normal. Flooding of Low-lying land and roads is expected. Property flooding is not expected at this time, although some localised flooding problems may result from surface water. We will continue to monitor the situation. You can monitor the situation in your area by using our 'River Levels, Rainfall and Sea Data' on our website. For more information on our Flood Alerts and how we issue them, please visit the ‘How we forecast floods, issue warnings and assess flood risk’ page on our website.

Flood Alert

Flood Alert issued on 23 Dec 2023 22:59

North

A period of adverse weather is affecting this region. River levels are expected to be above normal. Flooding of Low-lying land and roads is expected. Property flooding is not expected at this time, although some localised flooding problems may result from surface water. We will continue to monitor the situation. You can monitor the situation in your area by using our 'River Levels, Rainfall and Sea Data' on our website. For more information on our Flood Alerts and how we issue them, please visit the ‘How we forecast floods, issue warnings and assess flood risk’ page on our website.

Flood Alert

Flood Alert issued on 19 Sep 2023 12:56

North

River levels are expected to be above normal. Flooding of Low-lying land and roads is expected. Property flooding is not expected at this time, although some localised flooding problems may result from surface water. We will continue to monitor the situation. You can monitor the situation in your area by using our 'River Levels, Rainfall and Sea Data' on our website. For more information on our Flood Alerts and how we issue them, please visit the ‘How we forecast floods, issue warnings and assess flood risk’ page on our website.

Flood Alert

Flood Alert issued on 10 Jan 2023 10:48

North

River levels are expected to be above normal. Flooding of Low-lying land and roads is expected . Property flooding is not expected at this time, although some localised flooding problems may result from surface water. We will continue to monitor the situation. You can monitor the situation in your area by using our 'River Levels, Rainfall and Sea Data' on our website. For more information on our Flood Alerts and how we issue them, please visit the ‘How we forecast floods, issue warnings and assess flood risk’ page on our website.

Flood Alert

Flood Alert issued on 3 Jan 2023 22:01

North

River levels are expected to be above normal. Flooding of Low-lying land and roads is expected. Property flooding is not expected at this time, although some localised flooding problems may result from surface water. We will continue to monitor the situation. You can monitor the situation in your area by using our 'River Levels, Rainfall and Sea Data' on our website. For more information on our Flood Alerts and how we issue them, please visit the ‘How we forecast floods, issue warnings and assess flood risk’ page on our website.

Flood Alert

Flood Alert issued on 30 Dec 2021 14:25

North

In addition to the area detailed, some localised flooding problems may result from surface water. River levels are above normal. We will continue to monitor the situation.

Flood Alert

Flood Alert issued on 21 May 2021 07:00

North

In addition to the area detailed, some localised flooding problems may result from surface water. River levels are above normal. We will continue to monitor the situation.