L’Isle-aux-Grues: Secret Islands of St. Lawrence Expedition

The river keeps its secrets well. This 150-minute cruise from Berthier-sur-Mer is a fine way to see the St. Lawrence archipelago while hearing the human stories behind its 21 islands. I especially like the mix of river views and local history, plus the unusual tales of courtship, island ownership, and clandestine visits. The main drawback is that the return trip may have less commentary, and you may not get as close to L’Isle-aux-Grues as you expect.

I also like that the tour is made for curious people rather than serious sailors. You hear about the famous painter Riopelle, the islands’ wetland habitat, and Great Grandma Pruneau’s secret trips to Sainte-Marguerite Island. Just keep your expectations clear: this is a narrated cruise around an archipelago, not a shore excursion with time to explore the islands on foot.

Key points at a glance

• 21 islands in one river outing: The cruise introduces you to the full archipelago, not just the best-known island.
• Departing from Berthier-sur-Mer Marina: You begin on the south shore of the St. Lawrence and travel by boat toward the islands.
• Stories beyond standard sightseeing: Expect tales of island ownership, rowboat courtship, and Great Grandma Pruneau’s secret visits.
• L’Isle-aux-Grues and Riopelle: The island is linked with the well-known painter Jean Paul Riopelle, though the boat may not approach closely.
• A major wetland setting: The archipelago includes the largest unspoiled wetland in northeastern North America.
• English and French guiding: Live commentary is available in both languages.

Starting at Berthier-sur-Mer Marina

Your outing begins at the marina in Berthier-sur-Mer, Quebec. There is no hotel pickup or drop-off, so you need to make your own way to the departure point and allow enough time to board without rushing.

Once aboard, the first part of the cruise gives you a broad view of the St. Lawrence River. This matters because the ride is not simply a transfer to the islands. The changing water, open horizon, and gradual approach to the archipelago are part of the experience.

I would treat the marina departure as a practical advantage if you are already touring the Quebec City region or the south shore. You get a focused half-day outing without committing to a full-day boat trip. At 150 minutes, the timing is long enough to feel substantial, but short enough to fit around other plans.

The departure time can change near the end of August and may vary with the tides and weather. Check the current time before setting out, especially if you are building a tight schedule around the cruise.

The St. Lawrence opens toward 21 islands

As the boat moves away from Berthier-sur-Mer, the main attraction becomes the archipelago itself. The tour is designed to explain the secrets of all 21 islands, giving you a broader sense of the area than a simple ride past one shoreline.

The islands are not presented as empty scenery. Their importance comes from the way people used them, owned them, visited them, and connected with one another. You learn who controlled the islands over time and how life worked when a rowboat was the closest thing to a social network.

That last detail gives the cruise its character. The story of islanders courting each other by rowboat makes the waterways feel like part of everyday life, not just a pretty backdrop. It also helps you picture the practical limits of island living, where distance, tides, and weather shaped personal relationships.

The cruise suits you best if you enjoy hearing small, memorable stories. The narration is not only a list of dates or place names. It includes the sort of local details that help you remember the islands after the boat has returned to port.

L’Isle-aux-Grues and the Riopelle connection

L’Isle-aux-Grues is the best-known name in the group and the island most people expect to see. It is also associated with the famous painter Jean Paul Riopelle, adding an artistic connection to the island’s natural and social history.

Here is where you should set realistic expectations. The boat may not come close enough to L’Isle-aux-Grues for a detailed look, and the island may be harder to see than its name suggests. If your main reason for booking is to study the island itself, you may find the view limited.

Still, the value is not only in getting near the shore. The guide places L’Isle-aux-Grues within the larger group, showing how the familiar island relates to the lesser-known ones around it. I like that approach because it prevents the cruise from becoming a single-island sightseeing trip.

The archipelago is the subject, and L’Isle-aux-Grues is one important chapter.

Sainte-Marguerite Island and Great Grandma Pruneau

One of the more distinctive stories concerns Great Grandma Pruneau and her clandestine visits to Sainte-Marguerite Island. It is a small piece of local storytelling, but it gives the cruise a human scale.

You are not just hearing about land ownership or geography. You are hearing about people who moved through this island world in ways that were not always official or obvious. That kind of tale can make the cruise more engaging than a standard narration focused only on natural features.

The story also shows why a guide matters here. From the water, many islands can look similar at first glance. Without context, you may see shorelines, marshes, and open water without understanding how one island differs from another. The commentary supplies the names, connections, and odd details that turn a passing view into a place with a story.

The guide is available in English and French, so you can choose the language that lets you follow the history most comfortably.

A wetland with more than pretty views

The archipelago contains the largest unspoiled wetland in northeastern North America. That description gives the scenery a larger meaning. You are not simply cruising past isolated islands. You are passing through an important natural area shaped by the St. Lawrence River.

The wetland setting is one reason the cruise works well for people who want scenery with some context. The water and islands are attractive on their own, but the guide helps explain why this area matters.

Do not expect a wildlife-focused expedition based on the information available. The main emphasis is on the islands’ stories and history, with the natural setting forming an important part of the route. If your priority is a dedicated birding or animal-watching trip, this may not be the right choice.

For a general sightseeing cruise, though, the wetland adds substance. It also makes the outing feel different from a standard harbor ride. The St. Lawrence here is broad, open, and closely tied to the islands’ past and present.

How the narration shapes the experience

The strongest part of the cruise is the guided interpretation. The tour promises the secrets of the 21 islands, and the most appealing subjects are specific: past island owners, rowboat courtship, Riopelle, and Great Grandma Pruneau.

The feedback is not completely uniform on the narration. Some people found the historical detail excellent and said they learned a great deal. Others felt the return trip had too little content after the main commentary had finished.

That is useful to know before booking. You should think of the outbound portion as the more information-heavy part of the ride, while the return may offer more time to watch the water and take in the views. If you need nonstop narration from dock to dock, you may be disappointed.

I see the quieter return as a minor weakness rather than a dealbreaker. A 150-minute boat ride does not have to be filled with constant talking, and open-water views can be pleasant without a speech every minute. Still, the tour would be stronger if the commentary stayed equally full during the trip back.

What to bring aboard

Food and drinks are not included. You can bring a lunch, and that is worth considering for a cruise lasting two and a half hours. A packed meal lets you enjoy the ride without needing to search for food during the excursion.

Bring a credit card because the boat accepts cards only. Cash is not accepted on board. This is a small detail, but it is exactly the kind of detail that can spoil a simple outing if you overlook it.

Rain does not automatically cancel the cruise. Unless conditions become dangerous for passengers, the boat continues to operate, and there is an enclosed area available. You should still dress for changing conditions on the river, though the only confirmed protection provided is the enclosed section of the boat.

A foldable wheelchair is accepted. Electric wheelchairs cannot be accommodated because the ramps and stairs become too steep with the tides. If accessibility is important for your plans, contact the operator before booking so you can confirm that the boat setup will work for you.

Is $65 a fair price?

At $65 per person, the value depends on what you want from a boat trip. The price includes the river cruise and a live guide, but not food, drinks, transportation to the marina, or hotel transfers.

I think the price is reasonable if you value local storytelling and want a compact outing around the St. Lawrence islands. The cruise gives you 150 minutes on the water and covers a subject you would not understand as well from the mainland alone. You are paying for access to the archipelago and for the guide’s interpretation, not merely for a boat ride.

The value is weaker if you expect a close look at L’Isle-aux-Grues or a full afternoon of nonstop narration. Since the boat may not approach the island closely and the return commentary may be lighter, your enjoyment will depend on how much you like scenic cruising.

For me, the strongest value comes from the combination of local anecdotes and broad river scenery. This is not a luxury cruise with a meal, nor is it a transportation service to an island. It is a guided regional experience, and the price makes sense on those terms.

Who will enjoy this cruise most?

I would recommend it to curious visitors who like learning how a place works. The best audience includes people interested in local history, island communities, art, waterways, and unusual family stories.

It should also suit families and mixed-age groups because the stories are easy to follow and do not require specialist knowledge. The subject matter gives younger passengers something concrete to remember, especially the rowboat courtship and secret island visits.

You may want to skip it if you need a highly active excursion. There is no indication of walking time, island landing, or time to explore ashore. You remain on the boat for the experience.

It may also disappoint you if your main goal is a close-up visit to L’Isle-aux-Grues. The island is part of the story, but the cruise covers the wider archipelago and may only provide a more distant view.

Booking, cancellation, and weather tips

You can cancel up to 24 hours before departure for a full refund. The reserve-now-and-pay-later option also lets you hold a place without paying immediately, which is useful when your Quebec plans are still shifting.

The weather policy is fairly practical. Rain alone does not stop the cruise, and an enclosed area is available. Dangerous conditions can cancel the outing, so keep some flexibility in your schedule.

Check the departure time again if you are visiting in late August. Tides and seasonal changes can affect the schedule. You should also arrive ready to pay by credit card and bring any lunch or drinks you want for the ride.

Should you book the Secret Islands cruise?

Book this cruise if you want a story-led St. Lawrence outing with wide river views and a look at an unusual 21-island archipelago. The history is the real prize, especially the tales of rowboat courtship, changing island ownership, Riopelle, and Great Grandma Pruneau.

Think twice if you want to walk on L’Isle-aux-Grues, get very close to its shore, or hear commentary without a quiet stretch on the return. For most curious visitors, though, $65 buys a pleasant and distinctive two-and-a-half-hour introduction to a part of Quebec that is easy to miss from land.

FAQ

How long is the L’Isle-aux-Grues cruise?

The cruise lasts 150 minutes, or two and a half hours.

Where does the cruise depart?

It departs from Berthier-sur-Mer Marina in Quebec, Canada.

What does the price include?

The price includes the river cruise and a live guide. Food, drinks, hotel pickup, and hotel drop-off are not included.

Is the tour available in English?

Yes. Live guiding is available in English and French.

What happens if it rains?

The cruise normally continues in rainy weather unless conditions create a safety risk. An enclosed area is available on the boat.

Can I use cash on board?

No. Cash is not accepted on board, so bring a credit card.