Rivière Aa: water levels along the river

4 gauges report along the Rivière Aa. 2 of them read below normal for the date, and none is running high.

On this page the river runs through Pas-De-Calais. Reading the gauges in order shows how a rise or a dry spell travels downstream, usually over a day or more on a big river. Autumn is often a low point for rivers after the summer, until steady rain returns.