Can you fish at Thousand Islands?

Absolutely, Thousand Islands fishing is a captivating experience, offering enthusiasts the opportunity to cast their lines in the scenic waters of the St. Lawrence River and other lakes and rivers within the region. Whether from the park docks or boats, fishing is permitted with a valid sport or conservation fishing license. It’s important to note that visitors under 18 or over 65 years of age do not require a license, making it an accessible and enjoyable activity for a wide range of individuals. So, whether you’re an avid angler or just looking to try your hand at fishing, the Thousand Islands provide a beautiful backdrop for a memorable fishing adventure.

Does Thousand Island have fish?

The Thousand Islands area along the Saint Lawrence River, straddling the U.S.-Canada border, is a sanctuary for fishing enthusiasts. With its expansive 80-kilometer coastline, this region is not only a visual delight but also a paradise for anglers. The diverse aquatic habitats of the Thousand Islands are home to an array of fish species, making it an enticing destination for fishing. From record-sized trout to walleye, large and smallmouth bass, northern pike, bullhead, channel cats, and the formidable muskellunge, locally known as the Muskie, there is a rich variety of catches awaiting fishing enthusiasts. The Thousand Islands provide not just stunning landscapes but also an abundance of fishing opportunities for those seeking diverse and exciting fishing experiences.

Do you need a Canadian fishing license to fish the St. Lawrence River?

Navigating the waters of the St. Lawrence River in the Thousand Islands requires awareness of fishing license regulations. When fishing in Canadian waters, an Ontario fishing license is mandatory, ensuring compliance with local regulations. Similarly, if angling in American waters, a New York fishing license is essential. Fortunately, obtaining these licenses is a straightforward process, with New York fishing licenses available at various bait shops and sport shops. This dual licensing system ensures that anglers can seamlessly enjoy the fishing treasures that both Canadian and American waters of the St. Lawrence River in the Thousand Islands have to offer.

Can you swim in the Thousand Islands?

While fishing is a prominent activity, the Thousand Islands also offer opportunities for aquatic recreation. There are two sandy beaches within Thousand Islands National Park, located on Central Grenadier Island and Thwartway Island, providing designated areas for swimming. Additionally, throughout the park, there are numerous swimming rocks and docks, offering visitors alternative spots to enjoy a refreshing swim. Whether you’re angling for a catch or seeking a leisurely swim, the Thousand Islands provide a well-rounded experience, combining natural beauty with recreational options for a diverse range of outdoor enthusiasts.

Thousand Islands Fishing: Seasons, Species & Trophy Fish

In the heat of summer, walleye shift away from shallow spring spots and head for deeper shoals across the Thousand Islands. One of the most reliable ways to target them this time of year is by drifting or trolling a bottom-bouncer rig with a worm harness over rocky structure. Early mornings and late evenings offer the best bite windows, especially during calm conditions.

As the day warms up, the action doesn’t slow down—northern pike stay active in shallow, weedy bays and marshes. These aggressive predators are best approached with a baitcasting setup spooled with heavy braid and a steel leader, ideal for ripping large spinnerbaits or weedless spoons through thick vegetation. Their explosive strikes make them a summer highlight for any angler.

While pike roam the shallows, lake trout hold deep in the cooler waters of channels and drop-offs. To reach these depths—often 60 to 100 feet—a downrigger trolling setup is key. Large spoons or flasher-fly rigs are the go-to presentations, offering consistent success when worked along contour lines and submerged structure.

For anglers looking to mix things up, rainbow trout present a refreshing change of pace. Found in cooler tributaries and flowing connections within the river system, they’re well-suited to fly fishing with a 5-weight rod, drifting nymphs or dry flies through runs and seams. In still waters, light spinning gear with small spinners or bait can also be effective, especially around lake outflows.

Rounding out the summer lineup, smallmouth bass are abundant and reliably found around rocky islands, shoals, and points throughout the region. A medium-action spinning setup paired with spinners, tubes, or drop-shot rigs allows for versatile presentations. Whether shore fishing or canoe fishing, small mouth provide steady action and rod-bending fun all summer long.