3:30am, Friday 29th September BST
(2:30am, Friday 29th September GMT)
Within the usual range for this location
Falling, -0.210 from previous measurement at 3:15am, Friday 29th September BST
This is a tidal level, measured from mean sea level rather than from the river bed. It can, therefore, be negative, and does not give any indication of water depth. Tidal levels are not necessarily updated frequently, and may not reflect tidal movements throughout the day.
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.
Please note: Geographic coordinates may reflect the access point for the gauge, and not the precise location in the watercourse that it is taking readings from.
The usual range of the Holyhead Monitoring Station is between 0.47m and 6.08m. It has been between these levels for 90% of the time since monitoring began.
The typical recent level of the Holyhead Monitoring Station over the past 12 months has been between 0.13m and 6.56m. It has been between these levels for at least 150 days in the past year.
There are no other monitored rivers nearby