Title: River Irk
Content:  The River Irk is a river in the historic county of Lancashire in the North West England that flows through the northern most Lancastrian towns of the ceremonial county of Greater Manchester. It rises to the east of Royton and runs west past Chadderton, Middleton and Blackley before merging with the River Irwell in the centre of Manchester.
Title: Irkut (river)
Content:  The Irkut (Ирку&#769;т; Buryat and Эрхүү гол, Erhüü gol) is a river in the Buryat Republic and Irkutsk Oblast of Russia. It is a left tributary of the Angara. It flows out of lake Ilchir which is situated 50 km away from the highest peak of the Eastern Sayan Mountains, Munku-Sardyk. The length of the river is 488 km. The area of its basin is 15000 km2. The Irkut freezes up in late October or mid-November and stays icebound until late April or early May. The city of Irkutsk is located at the mouth of the Irkut on the Angara.
Title: Ik (river)
Content:  The Ik (Ик; Ык; Ыҡ) is a river in Russia that flows north to the Kama. It flows through the Republics of Bashkortostan and Tatarstan and through Orenburg Oblast. The left tributaries are Mellya, Menzelya, Dymka, and the right tributary is Usen. It is 571 km long, and its drainage basin covers 18100 km2. The time difference between Bavly in Tatarstan and Oktyabrsky in Bashkortostan is two hours (Tatarstan uses Moscow Time and Bashkortostan uses Yekaterinburg Time). Therefore, the bridge through Ik (river-border) is jokingly called "the longest bridge in the world".
Title: River Irt
Content:   The River Irt is a river in the county of Cumbria in northern England. It flows for 22 km from the south-western end of Wast Water, the deepest lake in England, leaving the lake at the foot of Whin Rigg, the southern peak of the famous Wastwater Screes. The name of the river is believed to derive either from the Old English gyr which means "mud", or from the Brittonic words *ar, "flowing", or *īr, "fresh, clean, pure", suffixed with -ed, a nominal suffix meaning "having the quality of...". The river forms at the confluence of Lingmell Beck and Mosedale Beck on Wasdale Head, which is on the north-western side of Scafell Pike. On its short journey to the coast, the Irt is crossed by the Cumbria Coastal Way long-distance 
Title: River Irk
Content:  The Irk's name is of obscure etymology, but may be Brittonic in origin and related to the Welsh word iwrch, meaning roebuck. The Afon Iwrch, a river in Denbighshire, also takes its name from this word. In medieval times, there was a mill by the Irk at which the tenants of the manor ground their corn and its fisheries were controlled by the lord of the manor. In the 16th century, throwing carrion and other offensive matter into the Irk was forbidden. Water for Manchester was drawn from the river before the Industrial Revolution. A bridge over the Irk was recorded in 1381. The river was noted for 
Title: River Irwell
Content:  From its source to the confluence with the River Mersey the Irwell is about 39 mi long. Rising on the moors above Cliviger, it flows south through Bacup, Rawtenstall, Ramsbottom and Bury before merging with the River Roch near Radcliffe. Turning west, it joins the River Croal near Farnworth before turning southeast through Kearsley, Clifton and the Agecroft area of Pendlebury. It then meanders around Lower Kersal and Lower Broughton. It bisects Salford and Manchester, joining the rivers Irk and Medlock, and then turns west toward Irlam, as part of the Manchester Ship Canal. Its course ends just east of Irlam, where it empties into the Mersey.
Title: Irkutsk
Content:  Irkutsk is located about 850 km to the south-east of Krasnoyarsk, and about 520 km north of Ulaanbaatar, the capital of Mongolia. The city proper lies on the Angara River, a tributary of the Yenisei, 72 km below its outflow from Lake Baikal and on the bank opposite the suburb of Glaskovsk. The river, 580 m wide, is crossed by the Irkutsk Hydroelectric Dam and three other bridges downstream. The Irkut River, from which the town takes its name, is a smaller river that joins the Angara directly opposite the city. The main portion of the city is separated from several landmarks—the monastery, 
Title: Ik (Berd)
Content:  The Ik is a river in Toguchinsky, Maslyaninsky and Iskitimsky districts of Novosibirsk Oblast, Russia. Its length is 75 km (47 mi). The river is a tributary of the Berd. The tributaries of the river are the Kiternya (7 km), Small Ik (8 km), Taradanovka (16 km), Krokhalyovka (23 km), Ashtak (37 km), Big Yelovka (41 km) and Listvyanka (47 km) rivers. The settlement of Verkh-Iki is situated at the river.
Title: Irkutsk
Content:  fort and the port, as well as its suburbs—by another tributary, the Ida (or Ushakovka) River. The two main parts of Irkutsk are customarily referred to as the "left bank" and the "right bank", with respect to the flow of the Angara River. Irkutsk is situated in a landscape of rolling hills within the thick taiga that is typical in Eastern Siberia. The population has been shrinking since the late 1980s:. According to the regional plan, Irkutsk city will be combined with its neighboring industrial towns of Shelekhov and Angarsk to form a metropolitan area with a total population of over a million.
Title: River Irk
Content:  the bottom flows, or rather stagnates, the Irk, a narrow, coal-black, foul-smelling stream, full of debris and refuse, which it deposits on the shallower right bank." The river has since been culverted as it reaches the city centre. It disappears beneath Manchester Victoria railway station into a brick tunnel at Ducie Bridge and empties into the Irwell beneath a railway viaduct. On 15 August 1953, the front coach of a Manchester to Bury electric train fell from the viaduct over the River Irk after colliding with a local steam train. Ten people were killed and 58 injured in what became known as the Irk Valley Junction disaster.

Question: where does the river irk start and finish?
Answer: east of Royton.
the east of Royton.