if (flags & DC_EXEC) {
                if (IsCanal(tile) && Company::IsValidID(owner)) {
                    Company::Get(owner)->infrastructure.water--;
                    DirtyCompanyInfrastructureWindows(owner);
                }
                bool remove = IsDockingTile(tile);
                bool canal_on_river = HasTileCanalOnRiver(tile);
                DoClearSquare(tile);
                if (canal_on_river) {
                    MakeRiver(tile, Random());
                } else if (remove) {
                    RemoveDockingTile(tile);
                }
                MarkCanalsAndRiversAroundDirty(tile);