Radunia Canal

The Canal begins in Pruszcz Gdański, near the village of Juszkowo, and continues straight north through Pruszcz. At the northern border of the city of Pruszcz, as it enters Gdańsk proper, it loses its straight shape and continues with a winding course up to the quarter (osiedle) of Św. Wojciecha [pl]. During that portion of the route, the Rotmanka Stream flows into it. It then returns to a straight course through Orunia and Lipce [pl], with the Orunia Stream [pl] flowing into it. In Zaroślak, it is linked to the Opływ Motławy.^[4]

It then goes underground, flowing under railway lines and briefly being visible inside the shopping mall Forum Gdańsk^[10] and eventually emerging in the Old Town, where it flows through two mills (the Mały Młyn and Wielki Młyn, the latter of which was Europe's largest industrial plant during the Middle Ages),^[11] takes a turn, and flows into the Motława.^[4]

In 2011, a project began to modernize the Radunia Canal. Elements of the project included construction of shore protections, the strengthening and sealing of flood embankments, the reconstruction of several pedestrian bridges, and removal of sewage and water piping networks that moved through it. It was projected to cost 130 million zł.^[12] The project was completed in several phases, being partly completed in 2012 and fully in 2015.^[13][14][15]

In 2016 and 2017, two bridges across the Canal were built in Pruszcz Gdański.^[16] In 2018, a bridge in Orunia, carrying traffic on Starogardzka Street, was renovated.^[17][18] The most recently-built bridge was completed in 2020, also in Orunia-Św. Wojciech-Lipce, near the old Ferber Manor.^[19][20]