Swan Pond River flows through the town of Dennis on Cape Cod, Massachusetts, creating a winding tidal waterway that connects Swan Pond to Nantucket Sound. This approximately 2-2.3 mile river meanders southward through conservation lands and residential areas, passing Route 28 before reaching its terminus at South Village Beach in West Dennis. The river's character is defined by its tidal nature, with currents and water levels fluctuating significantly throughout the day, making tide timing essential for trip planning.

The river supports a thriving kayak rental operation at Cape Cod Waterways along Route 28, which serves as a central access point for paddlers exploring the system. From this location, paddlers can venture upstream to Swan Pond's islands or downstream to the mouth at Nantucket Sound, with each direction offering approximately 90 minutes of paddling time. Additional access points include a boat ramp at 71 Clipper Lane in Dennis Port, a car-top access at 437 Center Street overlooking Swan Pond, and another car-top launch at 8 Upper County Road near the conservation area. South Village Beach provides southern access, with parking about 100 yards from the launch area.

The river's flatwater tidal conditions make it suitable for beginners and families, with no rapids or technical challenges to navigate. However, paddlers must account for tidal flows, wind conditions, and sandbars that appear at low tide, particularly near the river's mouth. At extreme low tide, shallow areas may require portaging. The best strategy involves starting two hours before high tide to take advantage of favorable currents.

Wildlife viewing opportunities abound along the river corridor, with regular sightings of ospreys (including nesting platforms), great blue herons, egrets, cormorants, and Canada geese. The winding nature of the river creates excellent habitat for various fish species and crabs, particularly in the tidal flats near Nantucket Sound. Swan Pond itself features islands that provide rest stops during longer paddles.

The Swan Pond River watershed covers 1,901 acres across Dennis and Harwich, with 181 acres of embayment area. The river flows through heavily developed residential areas, with approximately 81% of parcels in the watershed designated for residential use. Conservation lands along the river corridor help preserve natural habitat and maintain public access.

Paddlers should be aware that beaches adjacent to the river mouth include private property, though Massachusetts law provides access between mean low and high tide lines. The river experiences minimal boat traffic compared to nearby Bass River, offering a more tranquil alternative for paddlers seeking a quieter Cape Cod experience.