Hundreds of dead fish have been found in the River Wensum in Norfolk, England, an event attributed by the Environment Agency to a combination of high temperatures and recent rainfall flushing contaminants into the water. The incident occurred against a backdrop of a heatwave that has significantly lowered dissolved oxygen levels in the river.
The Environment Agency stated that its officers investigated the scene and concluded that the most probable cause was heavy rainfall on a recent Thursday evening. This rainfall is believed to have washed contaminants from surface water drainage systems into the river. These conditions, coinciding with low river flows and high temperatures, created an environment where dissolved oxygen levels dropped significantly, leading to the fish deaths.
The River Wensum, spanning approximately 44 miles (71 kilometers), is recognized for its ecological importance. It is designated as a Site of Special Scientific Interest and a Special Area of Conservation, supporting over 100 plant species and a rich variety of invertebrate fauna. It is considered one of the most significant chalk river habitats in England.
The Environment Agency indicated that it would continue to monitor the river and collaborate with partner organizations to assess the situation further. IMAGE2
IMAGE11
