– Flood warning at red level is maintained for most Vikens and Inlandets. Most of the Drammensvassdraget have levels above 50-year floods, and the consequences will be dire, says flood observer Erik Holmqvist at Norway’s Directorate of Water Flows and Energy (NVE).

The Drammen Aqueduct is the third largest waterway in Norway and consists of several tributaries, including the Hallingdal Aqueduct, the Begnavassdraget Aqueduct and the Randsfjord Aqueduct.

The rain is expected to subside

The red danger level is the highest danger level and means an extreme situation exists. Among other things, major flooding, erosion damage and flood damage to buildings and infrastructure in the exposed areas are expected.

The flood warning has been raised to red on Drammen and Øvre Eiker.

It is expected that there will be less rain on Wednesday afternoon in the Viken and Innlandet, but there are still red floods in several major rivers such as the Hallingdalselva and Begna.

Floods will increase

Flooding will also continue to increase in Drammenvassdraget in the next few days. At Glommavassdraget, flooding is currently at orange level, but here too several tributaries are at red level.

– Along rivers in floodplains, large water flows can cause mass digging at the foot of slopes. Rapid lowering of the water level after flooding can also cause localized landslides, says landslide monitor Heidi A. Grønsten at NVE.

NVE has also issued yellow landslide warnings for parts of Vestland and Møre and Romsdal on Thursday and Friday due to heavy rains.

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