Bobbin Head (Cowan Creek)

Bobbin Head sits at the top of Cowan Creek, deep inside Ku-ring-gai Chase National Park, where a sandstone gorge opens onto mangrove flats, a picnic lawn and a long seawall along the water. Cowan Creek is one of the Hawkesbury's best-known side arms — DPIRD's Hawkesbury guide lists it as a winter hairtail hot spot — and the upper creek adds flathead, whiting, bream, luderick, leatherjackets and the occasional mulloway. The seawall in front of the picnic area puts you on the creek edge a few steps from the car, with Apple Tree Bay a kilometre downstream as a second foreshore. It is a national-park day out with a rod rather than a hard-core land-based mark, and that is the appeal.

Fish the seawall along the Bobbin Head picnic area, north of the Ku-ring-gai Chase Road bridge, or the sandy foreshore beside the Apple Tree Bay boat ramp, keeping clear of boats launching. Fish close — the local rule of thumb is that the action is within about 15 m of the bank, and casting wide mostly finds rays. Flathead take curl-tail grubs and 2.5–3in plastics hopped along the deeper edges, and small hardbodies over the shallow flats upstream of the marina. Bream and whiting come on peeled prawn or worms on a light running sinker rig, and a mulloway is a low-light or night proposition with a fresh squid or yellowtail bait fished close to the tide change.

Dusky flathead are the most reliable land-based target, in a 36–70 cm slot with a bag of 5 — anything over 70 cm is a breeding female and goes back. Yellowfin bream run year-round at 25 cm and a bag of 10 shared with tarwhine, with the bigger fish in winter. Sand whiting work the shallows through summer at 27 cm inside a shared whiting bag of 20, and luderick feed along the rocky edges in the cooler months at 27 cm and a bag of 10. Leatherjackets are a no-size-limit bycatch with a shared bag of 20, and mulloway are 70 cm with a bag of one fish per person. Hairtail are the creek's famous winter fish, but they are a deep-water, mostly boat-based target rather than a seawall one.

Fish from the seawall and the public foreshore — not the Empire Marina pontoons, which are private, and not off the road bridge over Cockle Creek, which is a traffic deck rather than a fishing platform. Bring your bait with you; digging in mangroves, seagrass and saltmarsh is prohibited statewide, and Bobbin Head is fringed by mangroves. Leave the hoop nets and prawn scoop at home too: all of Cowan Creek, Bobbin Head included, is closed to every kind of net except a landing net. NPWS bans spearguns and hand spears anywhere in Ku-ring-gai Chase, including carrying them through the park. DPIRD's Hawkesbury guide notes that tide changes run later the further a spot is from the mouth, so Bobbin Head turns well after Broken Bay — plan around the local change, not the ocean one.

Drive in on Bobbin Head Road from North Turramurra or Ku-ring-gai Chase Road from Mount Colah, both sealed. NPWS charges a park entry fee of $12 per vehicle per day, which can be paid through the Park'nPay app; the park is always open, and the only gate closures NPWS lists are for West Head and the Sphinx car park, not Bobbin Head. NPWS car parks sit right behind the picnic area, with toilets, barbecues, a playground and the Bobbin Head Visitor Centre (10am–4pm daily, from 9am in the summer school holidays, closed 12–12.30pm) a short walk from the wall. Apple Tree Bay has its own car park, toilets and boat ramp. The seawall is flat and close to the cars, which makes this one of the easier estuary spots north of Sydney for families and less mobile anglers.

Bobbin Head is about as sheltered as Sydney fishing gets — no ocean swell reaches this far up Cowan Creek, and the gorge blocks most winds apart from those that funnel along the creek. That makes it a fallback when the coast is unfishable. Tide movement matters more than weather; the last of the run-out and the first of the run-in are the windows to target. Heavy rain in the catchment stains the creek brown for days, which can shut the whiting down but often pushes flathead and bream down onto the edges.

This is calm estuary water, but the creek beside the wall is deep enough to matter, so keep small children back from the edge. Oysters on the rocks and pylons cut hands and lines, and the mangrove mud either side of the picnic area is soft and deep — don't wade into it. The marina and the ramp at Apple Tree Bay keep the water busy on weekends, so watch your line on the cast. It is national-park bush, so expect snakes in warm weather, carry water in a summer gorge that traps heat, and remember NPWS can close the park in poor weather or fire danger — check alerts before you go.

Yes. NPWS lists fishing as a permitted activity in Ku-ring-gai Chase National Park, and the seawall along the Bobbin Head picnic area and the foreshore at Apple Tree Bay are the land-based options. Stay off the private Empire Marina pontoons and the road bridge over Cockle Creek. A current NSW Recreational Fishing Fee is required, and spearguns and hand spears are banned in the park.

Two separate charges apply. NPWS charges a park entry fee of $12 per vehicle per day to drive into Ku-ring-gai Chase National Park, payable through the Park'nPay app, and anyone fishing in NSW needs a current NSW Recreational Fishing Fee unless exempt.

Dusky flathead, yellowfin bream, sand whiting, luderick and leatherjackets are the usual land-based catch, with the occasional mulloway around a tide change. Cowan Creek is also a winter hairtail hot spot, though hairtail are mainly caught from boats in the deeper water downstream.

NPWS says Ku-ring-gai Chase National Park is always open, and the overnight gate closures it lists apply to West Head and the Sphinx car park rather than Bobbin Head. The park can close in poor weather or fire danger, so check the NPWS alerts page before a night session.