Three Mile Lagoon

Overview

Three Mile Lagoon is a quiet coastal estuary reached by a classic West Coast forest walk, with the option to return along a black‑sand beach at low tide. It’s a mellow, nature‑first destination rather than a big “wow” viewpoint—perfect if you like birds, coastal forests, and a touch of adventure without crowds.

The Walk

Start from the Ōkārito School House car park on The Strand. Follow the Three Mile Pack Track through wind‑shorn rimu, rātā, and silver pine, climbing over Kohuamarua Bluff before dropping to the lagoon. A small suspension bridge crosses the estuary; there’s no formed track beyond the bridge, so this is your turnaround. If tides allow, return via the beach beneath steep bluffs—expect wave‑smoothed boulders and moody Tasman Sea views. The beach stretch between the lagoon and Ōkārito takes about 1 hour 20 minutes when the tide is right.

What You’ll See

• A sheltered lagoon framed by forest and dunes, with periodic sea views on the forested approach.
• A textbook West Coast sequence: coastal wetlands, low forest, and a high‑energy shoreline of black sand and rounded boulders.
• Subtle but fascinating wetland ecology, including zoned vegetation and a vulnerable aquatic herb (Myriophyllum robustum) that underscores the site’s conservation value.

Wildlife

This wider Ōkārito wetland complex hosts 70+ native bird species. Keep an eye out for kōtuku/white heron and royal spoonbills feeding in the shallows—patience pays off around the estuary margins.

Conditions and Safety

This is an easy‑to‑moderate tramping track with short steep sections and occasionally wet, rooty footing. The beach option is committing and strictly tide‑dependent—only attempt it within about an hour either side of low tide, and be conservative if swell or storm surge shortens the window. Tide times are posted at the Ōkārito car park.

Best Time to Visit

Go when low tide aligns with your schedule so you can choose the beach return. Westland’s perhumid climate means rain is common year‑round, so bring layers and be ready for quick weather changes.

Getting There

From Franz Josef, drive ~15 km north on SH6 to the Ōkārito turnoff, then ~13 km on sealed road to Ōkārito. Walks start beside the Ōkārito School House on The Strand. The Three Mile Lagoon outing typically takes around 3 hours return via the pack track, depending on conditions and beach timing.

Quick History Snapshot

Ngāi Tahu traditionally traveled this coast, and the area later saw gold‑rush activity at nearby beaches. Today it’s protected within Westland Tai Poutini National Park and valued for its wetlands and birdlife.