​​​​​Where does the data come from?
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The flow data presented here is publicly accessible from SEPA website
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The data presented here is averaged over 2 hours (the "raw" 15-min data is available from SEPA website)
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It is downloaded periodically by members of FIG, and published here
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It is published here for information only
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How to read the data?
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The flow rates are expressed in cubic meters per second "cumecs" m3/s. This is displayed on the vertical axis. The dates are displayed on the horizontal axis.
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The 3 gauges near Ballater are located on the map below. They are the Polhollick gauge, on the river Dee, the Gairn gauge, on the river Gairn, and the Muick gauge, on the river Muick.
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The sums- of the Polhollick+Gairn flows and the sum of the Polhollick+Gairn+Muick flows are also displayed on the graphs.
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The Mar Lodge flow rates are also presented.
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The vertical axis all have the same limits for easier comparison.
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For info, the peak flow rate Polhollick+Gairn+Muick was approximately 1250 m3/s.​
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Where are the graphs?
The flow data at Ballater since 2015 is here.
The flow data at Mar Lodge since 2015 is here.
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You can access zoomed in graphs for specific high flow events:
