We are the Clausentum Fen Conservation Group. Join our mission to protect the biodiversity and the enjoyment of this beautiful area.

Clausentum Fen

The Fen lies alongside the river Itchen and has chalk stream, fen and woodland habitats, but it is drying out. Tree and scrub growth have choked the fen causing great deterioration in water flow and light and led to a reduction in biodiversity. We hope to reverse this.

What's Happening....

See some of the historical artefacts that have been dug up - on our page devoted to Finds.


There has been recent digger work on the Fen to lower the height of the soil bund between zones 3 and 4 and redistribute the soil. The depth of the pond has been reduced and the steep banks have been smoothed out. Some reseeding in this area has taken placed using carefully selected native species, and we currently have a scarecrow on guard. There has been an application for formal HCC watercourse approval to connect a pipe between St Michael's Brook and the NW corner of zone 3 with the intention of encouraging a flow of water through this area.

We will be out on the Fen again between 10.00am and 12 noon on both Saturday 16th and Saturday 23rd June and wonder if you would like to join us. The work will consist of pulling up weeds such as nettles, goosegrass and brambles before they gain a hold. This is more fun than it sounds. The invasive Himalayan Balsam is also rearing its head.

It would be helpful to bring boots, gloves, and simple gardening tools such as forks and trowels..

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    2018 Clausentum Fen Conservation Group