The following table provides an overview of the flood situation in the Ruhr catchment area. The reporting limits shown in the table 'Current flood situation on the Ruhr' are based on the specifications of the Arnsberg district government.

The Arnsberg district government maintains a flood reporting service for the Ruhr, its tributaries Lenne and Volme and for the Lippe. The flood information service ensures that the authorities involved are informed of impending flood risks in good time.

The Arnsberg district government's flood reporting service covers the following watercourses in the Ruhr catchment area:

• Ruhr (from the Olsberg gauge to the mouth of the Rhine)
• Lenne (from the Kickenbach gauge to the confluence with the Ruhr)
• Volme (from the Stephansohl gauge to the confluence with the Ruhr)

If the water levels exceed specified reporting limits, the flood reporting service sends flood warnings to the fire brigade control centres of the districts and independent cities. In addition, other involved authorities are alerted.

Flood warning service of the Arnsberg district government