At 10:00pm, Thursday 26th December GMT
Within the usual range for this location
Falling, -0.010 from previous measurement at 8:00pm, Thursday 26th December GMT
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 csvNote: 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 Rhondda at Gelli is between -0.06m and 0.94m. It has been between these levels for 90% of the time since monitoring began.
The typical recent level of the Rhondda at Gelli over the past 12 months has been between -0.02m and 1.01m. It has been between these levels for at least 150 days in the past year.
The highest level ever recorded at the Rhondda at Gelli is 2.29m, reached on Thursday 6th December 2007 at 8:30pm.
Note that this data may not take account of recent measurements, as we wait until a level has been verified by Natural Resources Wales before adding it to our records.
Monitoring locations on nearby rivers
