Water levels will rise in the Netherlands this week as a result of the heavy rain and floods in southern Germany, flooding fields and riverside camp sites.

The highways and waterways agency Rijkswaterstaat expects river levels to peak on Friday at 13.3 metres above the Amsterdam Ordnance Datum (NAP), the benchmark for water levels in the Netherlands.

Up to 5,900 cubic metres per second will flow into the Rhine delta from Monday, raising the water to levels rarely seen in June. Water levels are expected to be above the critical level of 12 metres throughout the weekend.

Rijkswaterstaat spokesman Firdevs Akkaya said it was inevitable that the water would spill over into flood plains, causing problems for farmers and holidaymakers.

“From a level of 12 metres the water will start to flow into the floodplains,” Akkaya told NOS. “In those areas there are campsites, farmers are trying to get going and walkers will have to pay attention.”

Up to 300 mm of rain has fallen in parts of southern Germany in recent days, causing dams to burst and villages to be evacuated. The worst affected areas have been around the Danube in Bavaria, but flood warnings are in place along the Main, Neckar and Rhine rivers, which flow towards the Netherlands.

On Monday afternoon, broadcaster NOS reported that some campsites along the river Waal will be evacuated later in the week, as the river level rises. Farmers will also be warned to move their livestock to higher ground.