The Garren Brook is a small river in

Herefordshire Herefordshire () is a county in the West Midlands of England, governed by Herefordshire Council. It is bordered by Shropshire to the north, Worcestershire to the east, Gloucestershire to the south-east, and the Welsh counties of Monmouthsh ...

England England is a country that is part of the United Kingdom. It shares land borders with Wales to its west and Scotland to its north. The Irish Sea lies northwest and the Celtic Sea to the southwest. It is separated from continental Europe b ...

which rises beneath the eastern slopes of Garway Hill. It flows east to the hamlet of

Orcop Orcop is a village and civil parish in the county of Herefordshire, England. It lies south of Hereford. It has a well-preserved early Norman motte-and-bailey castle and a church dedicated to St. John the Baptist which has a chancel built ar ...

where it turns south, taking a series of incised meanders past St Weonards before turning east again, then south past

Llangarron Llangarron is a small village and civil parish in southwest Herefordshire within of both Ross-on-Wye (Herefordshire, England) and Monmouth (Monmouthshire, Wales). The population of the civil parish at the 2011 census was 1,053. The civil paris ...

, again in a series of incised meanders. Southeast of there it enters the right bank of the River Wye at Old Forge. Its largest tributary is the left bank stream known as The Gamber which enters it at Trehumfrey north of Llangarron, having originated on the north side of Orcop Hill. Other right bank tributaries include the Llantywaun and Llanerch brooks. It flows over a landscape formed in the mudstones and

sandstone Sandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) silicate grains. Sandstones comprise about 20–25% of all sedimentary rocks. Most sandstone is composed of quartz or feldspar (both silicates ...

s of the St Maughans and Brownstones formations of the

Old Red Sandstone The Old Red Sandstone is an assemblage of rocks in the North Atlantic region largely of Devonian age. It extends in the east across Great Britain, Ireland and Norway, and in the west along the northeastern seaboard of North America. It also exte ...

References

{{coord, 51.86214, -2.64096, type:river_region:GB, format=dms, display=title Garren Brook 2Garren