Murchison River Mouth (Kalbarri)

Moderate risk: Outgoing tide current at river mouth

The estuary mouth opens to the ocean; outgoing tidal currents can accelerate significantly near the channel. Snorkelers should stay well inside the river and avoid the immediate mouth area.

Moderate risk: Tidal flow at river mouth

The sandbar at the mouth shifts with tides and can create strong currents, especially on outgoing tide. Skippers and swimmers warned to exercise caution near the channel.

Low risk: Outgoing tide current

When the tide ebbs, water flows from the estuary out to sea, creating a noticeable current near the mouth. Stronger during spring tides.

Low risk: Boating traffic

The river mouth is used by fishing and tour boats. Swimmers should stay within designated swimming zones and be aware of vessel movements.

Low risk: Stinger jellyfish

Box jellyfish and other stingers can be present in warm estuarine waters during the hotter months. Wear protective clothing.

Low risk: Marine stingers (seasonal)

Marine stingers (box jellyfish and Irukandji) are occasionally present in warm months (November to May). Wear a stinger suit or check local warnings.

Low risk: Boat traffic near marina

Boat traffic from the Kalbarri boat hire and marina operates near the river mouth; stay clear of vessel channels.

Low risk: Sandbar navigation hazard

The shifting sandbar at the river mouth creates unpredictable depth changes and submerged obstacles, particularly after rain or king tides.

Low risk: Strong summer southerly winds

Mid West prevailing southerly winds can reach 30 knots suddenly during summer months, whipping up chop and making return to shore hazardous.