Cassiobury Park LNR

Cassiobury Park

Cassiobury Park (c) Josh Kubale

Cassiobury Park LNR

Discover, in a corner of Cassiobury Park, a wildlife haven close to the heart of a bustling town.


On the A412 Watford to Rickmansworth road
WD18 7LG

OS Map Reference

TQ 089 972
A static map of Cassiobury Park LNR

Know before you go

25 hectares

Entry fee


Parking information

Car park situated just inside the park gates at the end of Gade Avenue, free of charge for the first two hours with a ticket.


There are good sealed paths around most of the reserve that would be suitable for wheelchair use. The wider Cassiobury Park has a cafe and facilities. 


Dogs permitted

When to visit

Opening times

Open at all times

Best time to visit

April to August

Environmental designation

Local Nature Reserve (LNR)

About the reserve

A wildlife haven in a corner of Cassiobury Park, close to the bustling heart of Watford. The wet habitats found in Cassiobury Park Local Nature Reserve were once shallow watercress beds, fed with water from the river through a series of ditches. These have developed into marshland and open pools, surrounded by wet woodland of alder and willow, providing valuable cover and nesting sites for birds. There are also areas of grassland where birds such as goldfinch and greenfinch feed on the seedheads of thistles and teasels. Cassiobury Park is managed by Herts and Middlesex Wildlife Trust in partnership with Veolia Environmental Services and Watford Borough Council.

Seasonal Highlights 
Spring: Common frog, lesser spotted woodpecker, mistle thrush, song thrush.       
Summer: Meadowsweet, purple loosestrife, ragged robin, water-forget-me-not, yellow rattle.  
Autumn: Blackbird, fieldfare, fungi, nuthatch.
Winter: Grey heron, kingfisher, little egret, siskin.

Sit back, relax and go on a virtual tour of Cassiobury Park in this video of the reserve. 


Site entrance: You can access this nature reserve through the wider Cassiobury Park using the Langley Way entrance. There is also access from Gade Avenue car park on Gade Avenue/Cassiobury Park Avenue, or via the park from Rickmansworth Road.

Access by road: Take the A412 Watford to Rickmansworth road for one mile. Turn right into Gade Avenue before the first major roundabout.

Access by public transport
352, W30 – Watford Station (0.4 miles).
Rail: Watford Underground Station (0.4 miles).

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It costs on average £30 per month to care for each acre of our nature reserves.