Hyndburn Brook

Hyndburn Brook is a minor river in eastern Lancashire. It is approximately 4.5 miles (7.3 km) long and has a catchment area (not including the River Hyndburn) of 13.61 square miles (35.243 km²).[lower-alpha 1][1][2]

Hyndburn Brook
Hyndburn Brook from the Mill Lane Bridge.
Location
Country	England
Physical characteristics
Source
⁃ location	West of Church, Lancashire.
Mouth
⁃ location	River Calder, south of Martholme.
Length	4.5 mi (7.3 km)

Thought to begin at the confluence of Tinker Brook and White Ash Brook to the west of Church, the river runs north. It collects the River Hyndburn just before the M65 motorway bridge and Bottom Syke (from Dunkenhalgh) just afterward, meeting Shaw Brook and Spaw Brook to the east of Rishton. Turning to the northeast between Great Harwood and the Oakenshaw side of Clayton-le-Moors, it is joined by Norden Brook and then Harwood Brook. After passing under the A680 Hyndburn Bridge, the brook eventually joins the River Calder next to the district's waste water treatment works at Martholme.[3]

Both Tinker and White Ash Brooks drain the north side of Oswaldwistle Moor. Tinker Brook originates as Jackhouse Brook at the confluence of Cocker Brook and Cocker Lumb near Jackhouse, the former having passed through the old Warmwithens and Jackhouse reservoirs. It becomes Tinker Brook as it enters the south of town of Oswaldtwistle before it collects Whams Brook. While White Ash Brook begins as Lottice Brook northeast of Belthorn and flows in a northerly direction until it turns back east at the Haslingden Old Road bridge near the M65 motorway. It becomes White Ash Brook as flows under the Smithes Bridge in western Oswaldwistle.[3]

The name possibly originates from the Old English words hind (female deer) and burna (stream). Brook (OE broc) is a common name for a stream, most often found in southern and central England[4][5]

An ongoing river improvement scheme aimed to allow migrating salmon, trout and eels access to the River Hyndburn, saw the construction in 2017 of a fish bypass at the 4-metre (13 ft 1 in) high, 19th-century Oakenshaw Print Works weir.[6][7] In June 2019 work started on a similar project, upstream at the Dunkenhalgh weir near Rishton.[8]