Chew Valley Lake

Best time to visit and seasonal birds

January: January is usually a strong month for Gadwall, Teal and Tufted Duck at Herriott’s Bridge. Use the public roadside view safely or, with the correct permit, spend longer at Stratford Hide for Pochard. Check combinations and access terms before leaving home; the enclosure is not a public lakeside circuit.

February: In February, try Villice Hide for Wigeon and Shoveler if you hold the appropriate permit and the hide is open. Herriott’s Bridge offers a public alternative for Goldeneye and mixed ducks. Winter sun can be low, so select a view that lets you compare shapes without looking into glare.

March: March usually combines lingering Goldeneye at Herriott’s Bridge with increasingly active Great Crested Grebes seen from Stratford Hide. Compare diving and dabbling ducks before looking for anything unusual. Public visitors can use the Bittern Trail open hide, subject to the surface conditions, instead of entering locked permit routes.

April: In April, listen for Reed Warbler around Stratford Hide and compare Great Crested Grebes on open water. Reed warblers typically return during spring rather than to a fixed date. A short Grebe Trail circuit adds Chaffinch and woodland listening without requiring a shoreline permit; keep away from nesting activity.

May: May favours patient reed-edge watching from Stratford Hide for Reed Warbler and Reed Bunting. The public Grebe Trail is an alternative for Chaffinch, Coal Tit and Treecreeper. Give each listening stop time and leave the vegetation untouched; the useful viewing position is the established path or hide.

June: June usually offers Gadwall and Little Grebe at Herriott’s Pool, viewed from the public Herriott’s Bridge position. Common Tern may be watched over the lake from an open, permitted Moreton Hide, but check its seasonal access first. Keep public nature-trail access distinct from permission for the reservoir enclosure.

July: July begins the build-up of moulting wildfowl described by Bristol Water. Look for Tufted Duck and Pochard from the Bittern Trail open hide, or Great Crested Grebe from Stratford Hide with a permit. Shorebird opportunities depend on exposed mud, so do not assume a low-water view every summer.

August: In August, Stratford Hide can offer Green Sandpiper or Greenshank on suitable margins, with Great Crested Grebes on the water. Herons Green is a public alternative for Little Grebe and Common Sandpiper when conditions suit. County records describe these places; an old trip list is not a current sightings report.

September: September is usually an appealing combination of gathering Great Crested Grebes and passage waders. At the Bittern Trail open hide, scan suitable exposed margins for Dunlin or Greenshank; Herriott’s Bridge can offer Ringed Plover and Green Sandpiper. When the lake is full, change the target rather than approaching restricted shore.

October: October usually brings more Shoveler, Teal and Wigeon into the watching plan. Use Herriott’s Bridge for mixed ducks and the Bittern Trail open hide for the east-shore view. On a permit day, add Villice Hide if it is open. Make the light and wind decide the order of stops.

November: November suits a concentrated wildfowl day: compare Pochard at Stratford Hide, Wigeon at Villice Hide and Goldeneye from Herriott’s Bridge, subject to current access. A telescope is particularly useful across the main lake. The Grebe Trail offers a shorter wooded change of scene for Coal Tit and Treecreeper.

December: December usually rewards long, sheltered scans more than a hurried circuit of every bay. Try Herriott’s Bridge for Gadwall, Teal and Goldeneye, then Stratford Hide for Pochard if your permit allows. Finish within the current gate arrangements; an angling-office timetable does not establish general dawn or dusk access.

Opening times, entry and facilities

Bristol Water’s public picnic areas and nature trails are distinct from the reservoir enclosure and permit-only hides. Its Fisheries operator states that birdwatching permits for the enclosure, access road, path and hides are available only to members of recognised ornithological or naturalist societies. Day permits and season memberships are sold through its online booking portal. Confirm your eligibility before paying and carry the permit and any relevant membership evidence. The portal gives the current price at purchase. Choose the correct birdwatching product, because fishing and boat-hire permits cover different activities. Check the official visitor information before travelling for gate arrangements, parking charges and any operational restriction. Use public roadside viewing only from safe legal stopping places.

Trails, hides and visit length

For a two-hour public visit, start at the picnic area and follow the Grebe trail. Bristol Water describes this as a 1.2km hard-surfaced circuit, making it a sensible introduction to the lake. Pause at open views, compare the nearby ducks and spend time watching a grebe dive. If your group is comfortable with a rougher surface and the route is open, the Bittern trail adds a different waterside experience: the operator describes a 1.5km circuit beyond the footbridge over Hollow Brook, with an unsurfaced section and an open hide. Choose the route on conditions, not on a desire to complete both names. Our full-day permit-holder plan begins with an unhurried hide session arranged according to the current access map and permit terms. Devote the first part to wildfowl identification, making a rough count of common species before searching for anything unusual. Take a break away from the hide windows, then choose a different authorised viewpoint for contrasting light and shoreline. Keep the public nature trails as a relaxed middle walk rather than spending the whole day in a vehicle. A second long scan in the afternoon often reveals more than a rushed complete sweep of the lake. For visitors without a hide permit, extend the Grebe trail visit with the all-weather recreational route linking Woodford Lodge and the picnic areas. The operator describes that shared walking-and-cycling route as 2.7km; turn back wherever appropriate for your group. Herriott’s Pool has views from the bridge, but road traffic makes it a place for careful positioning rather than wandering between viewpoints. Stay behind barriers, keep binoculars away from the carriageway until safely stationary and never walk along a verge simply to obtain a closer photograph.

Accessibility and step-free routes

The Grebe trail is the clearest starting choice for wheelchair users and pushchairs: Bristol Water identifies its hard surface and all-weather construction. The later recreational route also provides an all-weather connection between Woodford Lodge and the picnic areas. By contrast, the Bittern extension is unsurfaced and can become wet and muddy. Select the firm route first and consider any extension only after establishing conditions. Bristol Water lists allocated disabled parking at Chew and asks visitors requiring assistance to discuss their needs when arranging a permit. For hide access, ask specifically about the intended hide’s threshold, ramp, approach and viewing height; a general disabled-parking provision does not answer those questions. A comfortable public-path session can be a better day than struggling to reach every hide. Bring a warm layer for seated observation, even if the approach feels mild. Public views from a roadside bridge need particular care with traffic, passing pedestrians and standing space. Anyone who needs a guaranteed toilet route or level café access should establish the particular facility before selecting a starting point.

Public transport and getting there

For a visit without a car, compare rail arrivals at Bristol Temple Meads with a pre-arranged taxi to the precise picnic-area or Woodford Lodge entrance you intend to use. Book the return at the same time and choose a daylight pickup point that the driver recognises. Choose a rail-and-taxi journey unless a current transport-operator timetable confirms a suitable bus. Allow for the final walk and a return departure that leaves enough time for your chosen route. Use the regional journey planner for your actual day if you want to investigate a bus alternative. Drivers should choose their starting point before setting the satnav: a lake postcode or reservoir centre pin is not a complete itinerary. Our measured accommodation drives start at the Woodford Lodge access area and use OSRM routes dated 18 October 2026. They exclude congestion, narrow-road delays and time spent moving between permitted lake viewpoints.