AS World Rivers Day approaches, Herts and Middlesex Wildlife Trust is championing the importance of restoring rare chalk river habitats.

A celebration of the world’s waterways, the day highlights the many values of our rivers, strives to increase public awareness and encourages improved stewardship of them. This year’s event is on September 22.

There are only 260 chalk streams in the world, and Hertfordshire and Middlesex is home to 10% of them.