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Alwen Reservoir

1,014 ha

📷 David Bloomfield · Geograph · CC BY-SA 2.0

Plan your visit

BirdsWildlifeInsects

Public accessFree entryDogs welcome1,014 ha

Getting here

53.07265, -3.58062

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Visiting this summer

Seasonal nature notes and what to look for now

🐦92+ species recorded in this area — summer evenings are best for activity; watch for Robin and Little Ringed Plover
🍄Mushroom foraging is at its best in summer here
🐕Dogs welcome — bring water in summer; the site has enough space to find shade on hot days

🌤️ Visiting this summer

🐦92+ species recorded in this area — summer evenings are best for activity; watch for Robin and Little Ringed Plover
🍄Mushroom foraging is at its best in summer here
🐕Dogs welcome — bring water in summer; the site has enough space to find shade on hot days

Good to know

£Free to visit — no entry charge
🐕Dogs welcome

Best for

9 activities

Bird watching

Very strong match

Birds — Robin, Little Ringed Plover, Chaffinch +89 more · last seen 2025; Reservoir — wildfowl and wading birds

Free

Wildlife

Strong match

Birds — Robin, Little Ringed Plover, Chaffinch +89 more · last seen 2025; Reservoir — wildfowl and wading birds

Free

Insect spotting

Strong match

Insects — Large Red Damselfly, Golden-ringed Dragonfly, Four-spotted Chaser +20 more · last seen 2024

Free

Seasonal nature

Good match

Plants — Feathery Bog-moss, Marsh Cinquefoil, Cranberry +15 more · last seen 2023

Free

Mushroom foraging

Good match

Fungi — Larch Bolete, Scaly Sawgill, Marsh Violet Rust +2 more · last seen 2023

Varies

Dog walks

Good match

Dogs allowed with public access

Free

Trails nearby

Within roughly 5 km

🚶

Walking

2 signed routes nearby

Signed route nearby

Brenig WayWalking route

Named routeRegional walking route

Hiraethog TrailWalking route

Named route

🚴

Cycling

1 signed route nearby

Signed route nearby

Ride North WalesCycling route

Named routeRef Brenig LoopLocal cycle route

🚵

Mountain biking

9 signed routes nearby

Signed route nearby

Ride the ClwydsMountain bike route

Named routeRef 2 Lake Tour

Ride the ClwydsMountain bike route

Named routeRef Around the Lake

Ride the ClwydsMountain bike route

Named routeRef Up to the Lake

ElorgarregMountain bike route

Named route

AlwenMountain bike route

Named route

BrenigMountain bike route

Named route

🐴

Horse riding

2 public paths nearby

Public paths

No named routes yet. Public paths are shown on the map.

Wildlife to spot

6,620 records · National Biodiversity Network

Wildlife to spot

6,620 records · National Biodiversity Network

🐦

Birds64 species

springsummer

2025

Little Ringed Plover · Goldcrest · Chaffinch · Mallard · Siskin +59

Little Ringed PloverCharadrius dubius
GoldcrestRegulus regulus
ChaffinchFringilla coelebs
MallardAnas platyrhynchos
SiskinSpinus spinus
WoodpigeonColumba palumbus
Great TitParus major
WrenTroglodytes troglodytes
Coal TitPeriparus ater
Herring GullLarus argentatus
RobinErithacus rubecula
ChiffchaffPhylloscopus collybita
Carrion CrowCorvus corone
CrossbillLoxia curvirostra
Willow WarblerPhylloscopus trochilus
Meadow PipitAnthus pratensis
BlackcapSylvia atricapilla
GoldfinchCarduelis carduelis
Willow TitPoecile montanus
Long-tailed TitAegithalos caudatus
StonechatSaxicola rubicola
Pied WagtailMotacilla alba yarrellii
RavenCorvus corax
Common SandpiperActitis hypoleucos
BlackbirdTurdus merula
Lesser Black-backed GullLarus fuscus
SwallowHirundo rustica
Mistle ThrushTurdus viscivorus
Blue TitCyanistes caeruleus
Great Spotted WoodpeckerDendrocopos major
PeregrineFalco peregrinus
Song ThrushTurdus philomelos
Tree PipitAnthus trivialis
Garden WarblerSylvia borin
BullfinchPyrrhula pyrrhula
HobbyFalco subbuteo
CuckooCuculus canorus
SkylarkAlauda arvensis
Black GrouseLyrurus tetrix
JackdawColoeus monedula
Sand MartinRiparia riparia
Greylag GooseAnser anser
DunnockPrunella modularis
WheatearOenanthe oenanthe
MagpiePica pica
Short-eared OwlAsio flammeus
WhitethroatCurruca communis
RedstartPhoenicurus phoenicurus
Grey WagtailMotacilla cinerea
CormorantPhalacrocorax carbo
Common GullLarus canus
GoosanderMergus merganser
StarlingSturnus vulgaris
House MartinDelichon urbicum
Reed BuntingEmberiza schoeniclus
PheasantPhasianus colchicus
KestrelFalco tinnunculus
Tufted DuckAythya fuligula
Canada GooseBranta canadensis
Black-headed GullChroicocephalus ridibundus
MerlinFalco columbarius
LinnetLinaria cannabina
Great Black-backed GullLarus marinus
Grey HeronArdea cinerea

🦎

Reptiles1 species

spring

2025

Adder

AdderVipera berus

🐸

Amphibians1 species

winter

2026

Common Frog

Common FrogRana temporaria

Species observations from the last 10 years via NBN Atlas

Wildlife to spot

6,620 records · National Biodiversity Network

🐦

Birds64 species

springsummer

2025

Little Ringed Plover · Goldcrest · Chaffinch · Mallard · Siskin +59

Little Ringed PloverCharadrius dubius
GoldcrestRegulus regulus
ChaffinchFringilla coelebs
MallardAnas platyrhynchos
SiskinSpinus spinus
WoodpigeonColumba palumbus
Great TitParus major
WrenTroglodytes troglodytes
Coal TitPeriparus ater
Herring GullLarus argentatus
RobinErithacus rubecula
ChiffchaffPhylloscopus collybita
Carrion CrowCorvus corone
CrossbillLoxia curvirostra
Willow WarblerPhylloscopus trochilus
Meadow PipitAnthus pratensis
BlackcapSylvia atricapilla
GoldfinchCarduelis carduelis
Willow TitPoecile montanus
Long-tailed TitAegithalos caudatus
StonechatSaxicola rubicola
Pied WagtailMotacilla alba yarrellii
RavenCorvus corax
Common SandpiperActitis hypoleucos
BlackbirdTurdus merula
Lesser Black-backed GullLarus fuscus
SwallowHirundo rustica
Mistle ThrushTurdus viscivorus
Blue TitCyanistes caeruleus
Great Spotted WoodpeckerDendrocopos major
PeregrineFalco peregrinus
Song ThrushTurdus philomelos
Tree PipitAnthus trivialis
Garden WarblerSylvia borin
BullfinchPyrrhula pyrrhula
HobbyFalco subbuteo
CuckooCuculus canorus
SkylarkAlauda arvensis
Black GrouseLyrurus tetrix
JackdawColoeus monedula
Sand MartinRiparia riparia
Greylag GooseAnser anser
DunnockPrunella modularis
WheatearOenanthe oenanthe
MagpiePica pica
Short-eared OwlAsio flammeus
WhitethroatCurruca communis
RedstartPhoenicurus phoenicurus
Grey WagtailMotacilla cinerea
CormorantPhalacrocorax carbo
Common GullLarus canus
GoosanderMergus merganser
StarlingSturnus vulgaris
House MartinDelichon urbicum
Reed BuntingEmberiza schoeniclus
PheasantPhasianus colchicus
KestrelFalco tinnunculus
Tufted DuckAythya fuligula
Canada GooseBranta canadensis
Black-headed GullChroicocephalus ridibundus
MerlinFalco columbarius
LinnetLinaria cannabina
Great Black-backed GullLarus marinus
Grey HeronArdea cinerea

🦎

Reptiles1 species

spring

2025

Adder

AdderVipera berus

🐸

Amphibians1 species

winter

2026

Common Frog

Common FrogRana temporaria

Species observations from the last 10 years via NBN Atlas

Wildlife to spot

Photos

📷 David Bloomfield · Geograph · CC BY-SA 2.0

Alwen Reservoir

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💧Alwen ReservoirReservoir0 m→💧Llyn AledReservoir4.2 km→💧Llyn AledReservoir4.2 km→✦Tai-isafHistoric site500 m→💧Llyn BrenigReservoir3.7 km→💧Llyn BrenigReservoir3.7 km→