Winschoterdiep, Groningen. The Winschoterdiep is a canal that runs from Groningen, from its junction with the Eemskanaal, to Winschoten. The Winschoterdiep first ended at Groningen's Oosterhaven, the current Schuitendiep, now it joins the Van Starkenborgkanaal one and a half kilometres east at the commercial ports. (c) 17 July 2021 Aerophoto-Schiphol | aerial photo 307609