Wnion at Dolgellau


Current River Level: 1.87m, falling

Within the usual range for this location

Current level recorded at 1:00pm, Monday 16th September BST
(12:00pm, Monday 16th September GMT)

Change from previous measurement: -0.028m
(recorded at 10:00am, Monday 16th September BST)

The normal level of the Wnion at Dolgellau in average weather conditions is between 1.41m and 2.13m. It has been between these levels for at least 151 days in the past year.

The usual range of the Wnion at Dolgellau in more extreme weather conditions is between 1.47m and 2.46m. It has been between these levels for 90% of the time since monitoring began.

The highest level ever recorded at the Wnion at Dolgellau is 3.75m, reached on Saturday 12th February 2005 at 5:00am.

  • Monitoring Station: Dolgellau
  • Natural Resources Wales Location ID: 4151
  • Natural Resources Wales Gauge ID: 4151
  • Watercourse: Wnion
  • Operational Area: Wnion
  • Catchment Area: Meirionnydd
  • UK Hydrometric Area: Dyfi Group
  • Nearest Town/Village: Dolgellau
  • Local Authority: Gwynedd
  • Ceremonial County: Gwynedd

Nearby Monitoring Locations

There are no other monitoring stations on the Wnion
There are no other monitored rivers nearby
Taming the Flood by Jeremy Purseglove

Nearby Flood Warning Locations

parts of Dolgellau from Marian Mawr Recreation Ground to Arran Road

No current or recent warnings.

Rivers Mawddach, Wnion and the town of Dolgellau
the flood plains of the rivers Mawddach and Wnion, including parts of Dolgellau

No current or recent warnings.

Long term graphs will work better if you rotate your fondleslab into landscape mode.

Past Week

Long Term

Darker blue shaded areas on long term data indicate maximum and minimum levels for the date (you may need to zoom in closer to see them).

Long term data may have gaps where the API data was not available.

Download long term data as csv

Note: CSV data will include any outlying values that have been ignored by our graphing system as probably erroneous (eg, because they are ridiculously high compared to the values either side of them). It is your responsibility to filter these out if necessary.

Important! If you are planning to retrieve the csv data automatically, you must read and understand the limitations on the data and its availability.

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