We explore the Three Rivers of Colne, Chess and Gade, their wetlands and woodlands, and the many old railways that pass through them. From Watford through Cassiobury Park to the Gade and the Grand Union Canal to Rickmansworth town centre, with lunch at the Aquadrome. We return on the Ebury Way, crossing the Chess and Gade, across Croxley Common Moor and then following the Colne to Oxhey Park and Bushey.
Toilets at start, Cassiobury Park hub, lunch and Oxhey Activity Park.
Lunch: picnic or café at the Aquadrome.
Train: to Watford Underground Station (Zone 7, Metropolitan line from Baker Street). Return from Bushey (Zone 8, Overground to Euston).