Open Country Restoring Wallasea's Wild Coast
Mar 26, 2026
Geoff Delve, longtime volunteer and project lead who runs tours and studies birdlife, and Rachel Fancy, RSPB site manager overseeing habitat creation, discuss transforming arable fields into Europe’s largest manmade coastal reserve. They cover using Crossrail clay to raise land, creating mudflats, saltmarsh and saline lagoons, huge increases in waders and migratory importance, and how the site is managed and experienced by visitors.
AI Snips
Chapters
Transcript
Episode notes
Engineering Land To Restore Coastal Habitat
- Wallasea was raised with three million tonnes of Crossrail clay to create mudflats and salt marsh rather than relying solely on seawalls.
- Raising land reduced tidal water flow from ~11 million to ~2 million cubic metres per tide, enabling planned habitats.
From Moonscape Construction To Thriving Reserve
- Rachel Fancy recalls the reserve during Crossrail works as a moonscape with dumper trucks and ships constantly moving material.
- She describes the site transforming from construction chaos to the green wetland it is today.
Tidal Gradients Create Rich Food Chains
- Managed breaching and new inland embankments create a gradient of habitats from tidal mudflat to higher salt marsh.
- That sequence supports invertebrates for waders and seed-producing plants for wintering ducks like wigeon and teal.