Letchworth Green Festival was held on 11th September. Some of the RevIvel team were delighted to be able to join Letchworth’s Green Festival and have an opportunity to discuss all things chalk stream related with people in Letchworth. The stall was busy offering children (and adults) a moment to make a dragonfly, enjoy “pond dipping” experience and look at the rich numbers of invertebrates currently living in the upper reaches of the Ivel, as well as understand more about the challenges faced by chalk streams today.