The River Holme in the Holme Valley, West Yorkshire, England is a tributary of the River Colne. The river's source is at Digley Reservoir and it is fed firstly by the run-off from Brownhill Reservoir, then by Dobbs Dike. The banks of the upper part of the river are mostly urbanised and are in the Holme Valley civil parish.
River Holme (left) joining the River Colne at Huddersfield
|⁃ elevation||188 metres (617 ft)|
|River Colne at Huddersfield|
|72 metres (236 ft)|
|Length||13.86 kilometres (8.61 mi)|
|Basin size||97.4 square kilometres (37.6 sq mi)|
From Digley Reservoir, the river flows north east through Holmbridge and Holmfirth. It flows north-north-east to Thongsbridge and Brockholes before turning north and reaching Honley, Berry Brow and Lockwood. It then proceeds northwards and joins the River Colne just south of Huddersfield town centre at Folly Hall.
The Environment Agency has a gauging station at Queen's Mill in Huddersfield where the recorded average low river level is 0.25 metres (0.82 ft) and the high river level is 1.2 metres (3.9 ft). The record highest level recorded was 2.5 metres (8.2 ft).
The river was prone to flooding, the earliest recorded in 1738. In 1840 the dam of Bilberry Reservoir was built over a stream, but the work had not been carried out properly and the stream not correctly redirected. The result was that, in February 1852, the reservoir broke its confines and flooded the Holme Valley as far as Holmfirth. It caused 81 deaths and the destruction of many homes and businesses.
The start of the river valley is surrounded by the high hills of Holme Moss, Harden Moss and Cartworth Moor. The underlying bedrock was laid down in the Upper Carboniferous period and consists primarily of Millstone Grit with some sandstone interspersed with thin coal seams.