Following on from my last post, people may also be interested to know that Natural England has reinstated the facility to make suggested updates to the chalk stream map. This will be especially interesting, I suspect, in places where the scarp slope of the chalk gives rise to numerous chalk rills and chalk fen habitats that might have been missed in our survey to date.

This facility can be accessed by going to the discovering priority habitats webpage and then clicking on the Citizen data portal tab. Then click on ‘Contribute data’ and then the button labelled ‘Mapping river/stream types’.

Revised guidance on proposing refinements to the chalk rivers map can be found there, along with a registration form for accessing the data portal and adding sites.