St. Lawrence Islands National Park of Canada

Visitor Information

Services and Facilities

St. Lawrence Islands – BY ROAD

The Visitor Centre and mainland headquarters of St. Lawrence Islands National Park of Canada are located on the St. Lawrence River between Brockville and Gananoque, Ontario at Mallorytown Landing. Travellers on Hwy 401 take exit 675 south. U.S. visitors travel north on Interstate 81 to the 1000 Islands Parkway, then turn east.

The Visitor Centre features a new kids activity area, a discovery touch table, a theatre, and a travelling exhibit about Canada’s biodiversity. Interpretive programs on topics ranging from wind power to turtles are offered regularly.

Facilities at Mallorytown Landing also include a playground, picnic area, historic gunboat exhibit, telephone, parking for vehicles and trailers, boat launch, overnight docking, and a 1.7 km walking trail (800m of which is barrier-free). The trail travels through woodland and wetland habitats and transects the property, a Loyalist farm that was cultivated until 1956.

St. Lawrence Islands – BY WATER

There are over 20 island properties in the St. Lawrence River between Kingston and Brockville. Note: Unless otherwise stated, national park islands have docks, privies, primitive campsites and delineated walking trails; most have shelters. Interpretive programs on a variety of natural and cultural heritage topics are offered throughout the summer at various island and mainland locations. The park does not provide transportation to the islands.

The park islands have seen some changes over the years to both facilities and services. New composting toilets have been a hit with visitors and more are being installed every ear to replace old pit privies. The park encourages a pack-in-pack-out policy throughout the park and several island locations do not have garbage facilities.

Please help us protect and preserve these unique island locations. To ensure that your stay is enjoyable, please read and observe park guidelines.

Stovin : eastern gateway to the 1000 Islands and the national park. A busy island adjacent to Brockville; 194 m of dock space; No camping or garbage facilities. Generators are not permitted.

Adelaide : tiny island adjacent to Grenadier and close to Mallorytown Landing. Significant native archaeological site and waterfowl habitat. 91 m of dock space; four mooring buoys. No camping or garbage facilities. Generators are not permitted.

Mallorytown Landing : 93 m of dock space. A full range of facilities - see ‘St. Lawrence Islands - By Road’ above.

Grenadier - East : sheltered, shallow docking is an ideal landing spot for small craft; 75 m of dock space. Trail through park property connects township road which traverses the 8 km island and joins private and park properties. Three campsites. No picnic shelter or garbage facilities. Generators are not permitted.

Grenadier - Central : United Empire Loyalist settlers found the deep soil and moderate climate well suited to farming. For the past three decades, shrub and forest communities have regenerated in abandoned farm fields. Largest facility in the park; 273 m of dockage; 17 campsites; group campground; hot & cold running water in washroom; signed trail adjoining township road, which runs the length of the island.

Grenadier - North : former site of the Angler’s Inn (c. 1871), favourite stop for fishermen; shallow water dock -71 m; two campsites; signed trail connects to the township road and park’s southern area. No picnic shelter or garbage facilities. Generators are not permitted.

Grenadier - West : navigational light on the southwest corner replaced lighthouse once operated by the Root family. Historic stone picnic pavilion, constructed when the park was established in 1904. 133 m of deep dockage. No garbage facilities or camping.

Georgina : Ivy Lea Bridge to the U.S. has footings on this island. Forest cover is a visible indicator of diverse habitats found on islands. 263 m of docking on north and south sides of the island; two campsites.

Constance : swift, shallow water swirls past the smaller island adjacent to Georgina as it plunges over a sill below the 1000 Islands Bridge, where the depth drops to over 65 m. 133 m of docking. No camping.

Hill : Batterman’s Point. Limited docking - 44 m. No camping.

Gordon : sandstone-based island where soils are deep and vegetation is lush. Archaeologically significant sites where native peoples spent summers, taking advantage of cool northwest breezes and abundant fruits, fish and wildlife as they prepared for winter. 160 m of docking; two campsites.

Mulcaster : “Nature’s Arboretum” 29 species of trees highlight the diversity of the 1000 Islands flora. 123 m of docking; two campsites. No picnic shelter or garbage facilities. Generators are not permitted.

Camelot : rocky, steep cliffs and heavily forested interior are typical features of the Thousand Islands. A popular island destination with 173 m of docking, six mooring buoys and six campsites.

Endymion : this island is a fragile example of Thousand Islands ecology. Limited docking. West end closed. Seven mooring buoys in south bay. No camping or garbage facilities. Generators are not permitted.

Mermaid : the tiny island is a geological feature known as a roche moutonnée (occurred when the retreating glacier deposited debris on the lee side of the rock knob). 86 m of deep-draught docking. No camping, garbage facilities or shelter. Generators are not permitted.

Aubrey : the island marks the western edge of the Frontenac Arch. A popular destination for boaters, with 214 m of docking in three locations and eight campsites.

Thwartway : became part of the park in 1972. It has remained a reserve, with no facilities. Five mooring buoys in the south bay. No camping, garbage facilities or shelter. Generators are not permitted.

Mcdonald : once used for farming, then as a youth camp by the Rotary Club and Sea Cadets. Now regenerating fields and forests provide prime wildlife habitat. 275 m of docking; 11 campsites.

Beau Rivage : a favourite spot for picnicking and camping since the park’s inception in 1904. 290 m of docking in several locations; eight campsites.

Milton : located at the entrance to the Bateau Channel. 110 m of docking and three campsites. No garbage facilities. Generators are not permitted.

Cedar : on the eastern edge of Lake Ontario. Cathcart Tower is part of Kingston’s historic fortifications and a national historic site. 102 m of docking at two locations; four campsites. No garbage facilities. Generators are not permitted.