Summary
Northwick Warth is a classic upper Bristol Channel/Severn Estuary mark between Severn Beach and Aust in Gloucestershire. It’s a tidal wall-and-warth venue with huge tides, coloured water, and powerful flow—perfect for bait anglers targeting estuary codling in winter and bass and thornback rays in warmer months.
Location and Access
This is a long stretch of flood bank and saltmarsh (warth) on the English side of the Severn, most easily reached on foot from Severn Beach or from the Old Passage/Aust side. Access is straightforward along the sea wall path, but the foreshore is dangerous mud—fish from the wall, not the flats.
- Approach from Severn Beach: park considerately in the village and follow the sea wall path north to the warth; allow 10–30 minutes depending on your chosen peg.
- Approach from Aust/Old Passage: limited parking near the viewpoint/old ferry area, then walk south on the flood bank 15–30 minutes.
- Terrain is a firm tarmac/grass flood bank with stiles and gates; the seaward side is soft saltmarsh and mud—do not descend.
- Wear stout boots; the bank can be greasy after rain and the grass slope is slippery.
- This is an SSSI/SPA coastline: keep to the public path, close gates, don’t disturb livestock, and respect any seasonal notices.
Seasons
The Severn here is brackish and very tidal, so expect hardy estuary species with strong seasonal peaks. Winter brings codling and whiting; summer sees bass and thornback rays.
- Spring (Mar–May): thornback ray, school bass, flounder; occasional early smoothhound on crab in late May.
- Summer (Jun–Aug): bass (schoolies to decent fish), thornback ray, occasional smoothhound, flounder; thick‑lipped mullet possible in calm neaps along the wall.
- Autumn (Sep–Oct): bass, thornback ray tailing off, flounder improving; early whiting runs in cold snaps.
- Winter (Nov–Feb): codling (size varies by year), whiting, flounder; odd pout. Silver eel turn up year‑round and must be returned.
- Migratory fish: salmon/sea trout and shad pass through—do not target; release immediately if foul‑hooked.
Methods
It’s predominantly a bottom‑fishing venue with heavy leads to hold bottom in fierce tide. Keep rigs streamlined and baits fresh to cut through the flow.
- Tackle: 12–13 ft beachcasters with 6–8 oz capability; robust reel (6500–8000 size) with 25–30 lb mainline and 60–80 lb shock leader.
- Leads: 170–200 g breakout grippers are standard; carry 6–8 oz. A weak‑link (rotten‑bottom) to the lead helps if you snag debris.
- Rigs: pulley pennel (4/0–3/0) or up‑and‑over for codling/ray; two‑hook flapper (size 1–2) for flounder/whiting; long single hook snood (2/0) for bass.
- Baits: peeler crab (prime for bass/ray/smoothhound), ragworm and lugworm cocktails, squid/mackerel wraps for codling/whiting; sandeel strips for rays in clearer spells.
- Casting: you rarely need range—20–60 yards finds the runnels; focus on presentation and holding bottom rather than distance.
- Rod positioning: keep rods high on a tall rest to lift line over the marsh edge and reduce drag; clip‑down rigs help with aerodynamics in the cast.
Tides and Conditions
The Severn’s tidal range is vast; plan your session around the top of the tide and be prepared for fast movement. Neaps are easier to fish; springs can be savage but often productive.
- Best states: typically 2 hours before high water through the top and the first hour of ebb; low water leaves vast mud—avoid.
- Tide size: small to mid‑range neaps for general comfort; big springs for codling and rays if you have the leads and line control.
- Time of day: dusk into night for codling and whiting in winter; evening floods for bass and rays in summer.
- Wind/colour: the water is usually chocolate‑coloured; a steady SW helps push fish in, but strong westerlies bring weed and debris. Prolonged heavy rain can push fresher water down and slow sport.
Safety
This is a serious tidal venue—treat it with respect. Fish from the flood bank and never venture onto the foreshore mud.
- Do not descend the bank: the warth and mudflats are soft and can swallow you quickly; incoming tide advances fast.
- Lifejacket and headtorch strongly recommended, especially after dark; carry a whistle and fish with a partner if possible.
- Slips/trips: wet grass is slick; use studded boots if you have them. Avoid the bank edge in the dark.
- Tidal surge/bore: spring tides can send a pronounced surge—secure tripods and be alert to a sudden rise.
- Livestock and fences: expect cattle and occasional electric fencing—keep dogs leashed and give stock plenty of space.
- Accessibility: the path is level but long; not ideal for those with limited mobility due to distance and lack of railings or firm standing bays.
Facilities
There are no facilities on the warth itself, so come self‑sufficient. Nearby villages cover the basics before and after a session.
- Parking and shops: Severn Beach has convenience stores/cafés; limited parking near Aust/Old Passage. Do not block gates or access tracks.
- Toilets: none on the wall; public/seasonal options are in Severn Beach when open.
- Tackle/bait: several tackle shops operate in the wider Bristol/Avonmouth/Thornbury area—pick up bait en route.
- Lighting: no lighting on the bank; a good headtorch and spare batteries are essential after dark.
- Phone signal: generally fair on top of the bank, though it can dip in places.
Tips
Think estuary: big scents, tidy rigs, and just enough distance to sit in the tide run. Keep mobile until you find a line that holds bait.
- Spring to early summer, peeler crab is king for bass, rays, and any passing smoothhound; wrap baits tight with elastic.
- For winter codling, use worm/squid cocktails on a pulley pennel and fish the top of a building flood into darkness.
- If the tide is ripping, shorten snoods and step up to stiffer snood material (30–40 lb) to stop spin‑ups.
- Weed and wood can arrive on springs—keep the line high and be ready to lift over rafts of debris.
- Mullet sometimes graze the wall on calm neaps; scale down and fish bread flake under a small float if you see them mooching.
- Insects can be fierce on warm, still evenings—pack repellent.
Regulations
This stretch lies within the Severn Estuary SSSI/SPA/SAC; access is along the public flood bank and disturbance to wildlife is an offence—follow on‑site signage. Standard sea angling rules apply, with a few key points to note.
- Bass: recreational bass regulations (bag limits/season, 42 cm minimum size) are set nationally and can change annually—check current MMO/IFCA notices before you go.
- Eels: it is illegal to retain European eel (or elvers); release immediately.
- Shad/salmonids: allis/twaite shad are protected; salmon and sea trout transit this estuary—do not target them. Any accidentally hooked fish must be released; targeting requires the appropriate EA licence and is subject to close seasons.
- Minimum sizes: observe current Minimum Conservation Reference Sizes (MCRS) for any fish you retain; consult the latest MMO lists for the Bristol Channel/Severn area.
- Bait digging/vehicles: parts of the foreshore have restrictions due to SSSI status—do not drive on the sea wall or dig on sensitive marsh; follow local byelaws and posted notices.
- Litter and fires: take all litter and line home; no open fires or barbecues on the warth or bank.