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Trimley Marshes

There are wonderful views of the Orwell estuary from here. An unbeatable wetland for its sheer number and species of birds.

Trimley Marshes is an exciting wetland reserve created almost entirely from arable land alongside the River Orwell. Most of the wildlife here today has colonised the site since it was created in 1990 to mitigate against the loss of Fagbury mudflats as a result of the expansion of the Port of Felixstowe.

The mosaic of habitats, managed primarily for birds, makes this reserve one of the best sites in the county. Many of the wet meadows are managed by the traditional method of grazing with cattle. Others are grazed with sheep and by wigeon and geese during the winter months.

The reservoir is the hub of the reserve, acting not only as a refuge for wildfowl and marginal nesting birds, but also as the storage and distribution point for the reserve’s water. Rafts of coot, tufted duck, teal and pochard mingling with cormorant, gadwall and shoveler, are a common sight here.

The lagoon and its islands provide a variety of habitats throughout the year. The islands are ideal nesting sites for avocet, ringed plover and tufted duck. In spring and autumn the muddy margins make excellent feeding grounds for migrating waders such as common sandpiper, curlew sandpiper and greenshank.

Trimley Marshes trail map - click to view


Species and habitats

Redshank, Avocet, Oystercatcher, Little Grebe, Emperor dragonfly, Gadwall

Nearby nature reserves

Levington Lagoon
2 miles - Suffolk Wildlife Trust
Copperas Wood Nature Reserve
4 miles - Essex Wildlife Trust
Newbourne Springs
5 miles - Suffolk Wildlife Trust

Nature reserve map

Reserve information

Cordy's Lane, Trimley St. Mary
IP11 0UD
Map reference
TM 262 355
Great for...
Best time to visit
Jan - Dec
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Opening Times
Reserve is open at all times, visitor centre is open most Wednesdays and at weekends.

There is a picnic area to bring your own picnic.

Visitor centre
77.00 hectares
Natura 2000
Site of Special Scientific Interest (SSSI)

Limited Access Linear public bridleway track to and from reserve hides and public footpath on river wall. Stone surfaced bridleway with some significant damp sections after rain, or in winter months. Hide adjacent to visitor centre has wheelchair accessible ramp. Car park 3km from hides, or 2km from reserve entrance. Please contact Site Manager for more information.
Walking information
Long (2 mile) walk from car park to hides and centre, can be muddy
Park at end of Cordy's Lane 2km from reserve entrance.
Dogs must be on lead
Grazing animals
Reserve manager
Andrew Excell
Tel: 01394 411019