The usual range of the River Thames at Marsh Lock (Downstream) is between 2.28m and 3.00m. It has been between these levels for 90% of the time since monitoring began.

The typical recent level of the River Thames at Marsh Lock (Downstream) over the past 12 months has been between 2.22m and 2.91m. It has been between these levels for at least 150 days in the past year.

The highest level ever recorded at the River Thames at Marsh Lock (Downstream) is 4.28m, reached on Sunday 9th February 2014 at 2:45am.

Note that this data may not take account of recent measurements, as we wait until a level has been verified by the Environment Agency before adding it to our records.

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.

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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