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 are currently plans to apply 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.

The spring has seen a welcoming greening of the Fen, but also there has been a great sprouting of weeds such as nettle and goosegrass from buried roots and seeds. Help is needed to remove them and stop them choking the more desirable plants. We hope to reintroduce the Saturday morning work party sessions now that there is more work to do.

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    2018 Clausentum Fen Conservation Group