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Lisvane and Llanishen Reservoirs

Glamorgan, Cardiff north  >  United Kingdom

Lisvane and Llanishen are 2 neighbouring reservoirs with easy access. There is a good variety of resident species and the lakes can attract scarce migrants.

Added* by Nicholas Smith
Most recent update 5 December 2025

Description

The two reservoirs are side by side, accessed via a well-made path (it can get a bit muddy in wet weather). The reservoirs are surrounded by grass, mature trees and hedges. Please keep to signposted trails and stay off the grassed areas at all times (they hold rare and protected Waxcap fungi species).

Regular species on the lakes include Tufted Duck, Little Grebe, Lesser Black-backed Gull, Great Cormorant, Great Crested Grebe ,Eurasian Coot, Mallard, plus many others. The water's edge attracts Grey Wagtail, Pied Wagtail Little Egret, Common Sandpiper and Common Kingfisher .

The surrounding areas can hold many of the passerine species you'd expect to find in the woodlands of South Wales, depending on the time of the year.

Parking is free for the first two hours, and there is a nice cafe (with toilet facilities). A small hide is situated on the northern side of the smaller Lisvane reservoir, which is particularly useful in the winter when the path around this reservoir is closed, to prevent disturbance.

This site has attracted a selection of rarer species over the years, so it's worth checking reports to see if there is anything unusual around. Great Northern Diver, Red Phalarope, Red-necked Phalarope, Black Tern, Ring-necked Duck have all been seen. A total of approximately 140 species have been recorded here.

Details

Access

The reservoirs are situated to the north of Cardiff, approximately 3.3 miles due north of Cardiff city centre and 1.3 miles due north of Roath Park. On the Welsh Water website https://lisvane-llanishen.com/ the location is given as Grid Reference ST 18493 82325 What3Words ///flute.escape.perky, and Lat/Long 51.533943, -3.176423

Two hours would be plenty of time to walk around the reservoirs and nearby trails - but it is easy to spend more time, especially with a stop at the cafe!

Terrain and Habitat

Park , Lake , Scattered trees and bushes , Wetland

Conditions

Flat , Slippery , No shadow

Circular trail

Yes

Is a telescope useful?

Can be useful

Good birding season

All year round

Best time to visit

Winter , Autumn migration , Spring , Spring migration

Route

Wide path

Difficulty walking trail

Easy

Accessible by

Foot , Bicycle , Wheelchair

Birdwatching hide / platform

Yes

Links

View other birding spots in the area that are published on Birdingplaces

Map

Top 5 birds

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