Trosaån

Trosaån flows northward from Lake Sillen through Vagnhärad, dividing the town of Trosa into two parts as it moves toward the Baltic Sea. The river's basin covers roughly 572 square kilometers and runs along established road corridors through the municipality.

In the early 17th century, the town of Trosa was relocated to its current position at the river estuary due to land rise following glacial retreat. This natural uplift reshaped the landscape and made a new location more suitable for a harbor settlement.

Small houses line various sections of the riverbanks, shaping the character of a traditional Swedish coastal town in the Södermanland region. They show how local life has developed alongside the waterway over time.

The river is accessible from multiple points, and most sections can be reached easily on foot or by road from nearby towns. Walking along the established roads that parallel the water provides the clearest views of the waterway and surrounding landscape.

During winter, the river surface freezes solid, creating a stable ice pathway that locals sometimes use to cross. This seasonal transformation gives the waterway an entirely different character than it has during warmer months.

Location: Trosa Municipality

GPS coordinates: 58.89378,17.55104

Latest update: December 14, 2025 14:21