

Best for intermediate divers, 10-21m, shore entry, strong current.
Grand Narrows offers a diverse underwater landscape featuring a reef, wall, wreck, and artificial reef structure accessible from the shore. This site is suited for intermediate divers, with depths ranging from 10 to 21 metres and an average depth of 15 metres. Visibility varies between 5 and 12 metres. The defining characteristic is a strong current, which necessitates timing dives around slack water. Water temperatures fluctuate significantly throughout the year, ranging from 0 to 19 degrees Celsius. Divers must be prepared for potential hazards including boat traffic, entanglement risks, and overhead environments within the wreck and swim-throughs. Parking is available on-site, but divers must provide their own equipment.
45.96120, -60.80297
Time your dive around slack water to manage the strong current safely, and check for boat traffic before entering from shore. Parking is available on site, but bring all your own equipment as there are no additional facilities.
The site is on the Iona side of Grand Narrows. Follow a dirt road that is narrow and very steep to a gravel and pebble beach. The dive is just past the pilings of the old railway bridge.
Expected in this region. No sightings logged here yet.
Depth
10-21m
Visibility
5-12m
Skill Level
Intermediate
Entry
Shore
Water Temp
0-19°C
Current
Strong
Typical Dive
45 min
The site depths range from 10 to 21 metres, with an average depth of 15 metres.
No, this site is intended for intermediate divers due to the strong currents and overhead environments.
This is a shore-accessible dive site.
Divers should be aware of strong currents, boat traffic, entanglement risks, and overhead environments.
The site is primarily designated for diving, and the strong currents and depth profile make it less suitable for snorkelling.
Diving at Grand Narrows in Iona requires the following certifications: Open Water. Always dive within your training limits.
A 7mm wetsuit or semi-dry is recommended for diving at Grand Narrows in Iona. Water temperatures reach up to 19°C.
Grand Narrows in Iona can have strong currents. Advanced experience with drift diving and current navigation is recommended.
Visibility at Grand Narrows in Iona typically ranges from 5 metres to 12 metres. Conditions vary with weather, tides, and seasons.