The Cregg River is a river in County Galway

County Galway

County Galway is a county in Ireland. It is located in the West Region and is also part of the province of Connacht. It is named after the city of Galway. Galway County Council is the local authority for the county. There are several strongly Irish-speaking areas in the west of the county...

, Ireland

Ireland

Ireland is an island to the northwest of continental Europe. It is the third-largest island in Europe and the twentieth-largest island on Earth...

. The river rises from a spring a half mile to the north of Cregg Mill

Cregg Mill

Cregg Mill is a converted 18th century watermill located near Corrandulla village in County Galway, Ireland, approximately 9 miles from Galway City. The mill serviced the local area, including neighbouring Cregg Castle, and served as a feeding centre for the poor of Corrandulla during the Great...

, and flows for about seven miles into Lough Corrib

Lough Corrib

Lough Corrib is a lake in the west of Ireland. The River Corrib or Galway river connects the lake to the sea at Galway. It is the second largest lough in Ireland . It covers 178 km² and lies mostly in County Galway with a small area of its northeast corner in County Mayo.The first canal in...

. The upper stretch of the river is a nursery for fish stocking

Fish stocking

Fish stocking is the practice of raising fish in a hatchery and releasing them into a river, lake, or the ocean to supplement existing populations, or to create a population where none exists...

 of Lough Corrib

Lough Corrib

Lough Corrib is a lake in the west of Ireland. The River Corrib or Galway river connects the lake to the sea at Galway. It is the second largest lough in Ireland . It covers 178 km² and lies mostly in County Galway with a small area of its northeast corner in County Mayo.The first canal in...

, while salmon

Salmon

Salmon is the common name for several species of fish in the family Salmonidae. Several other fish in the same family are called trout; the difference is often said to be that salmon migrate and trout are resident, but this distinction does not strictly hold true...

 and brown trout

Brown trout

The brown trout and the sea trout are fish of the same species....

 fishing is permitted on the lower stretches.

The Cregg River once powered three watermills, of which the converted Cregg Mill

Cregg Mill

Cregg Mill is a converted 18th century watermill located near Corrandulla village in County Galway, Ireland, approximately 9 miles from Galway City. The mill serviced the local area, including neighbouring Cregg Castle, and served as a feeding centre for the poor of Corrandulla during the Great...

 is the remaining example. The three mills stood together around the Cregg Mill

Cregg Mill

Cregg Mill is a converted 18th century watermill located near Corrandulla village in County Galway, Ireland, approximately 9 miles from Galway City. The mill serviced the local area, including neighbouring Cregg Castle, and served as a feeding centre for the poor of Corrandulla during the Great...

 bridge. The bridge there consists of seventeen arches, but only one arch is currently used. The nineteenth century Ordnance Survey Ireland

Ordnance Survey Ireland

Ordnance Survey Ireland is the national mapping agency of the Republic of Ireland and, together with the Ordnance Survey of Northern Ireland , succeeded, after 1922, the Irish operations of the United Kingdom Ordnance Survey. It is part of the Public service of the Republic of Ireland...

 maps show that the river was much wider at that point. However, due to man made changes to the water level of Lough Corrib

Lough Corrib

Lough Corrib is a lake in the west of Ireland. The River Corrib or Galway river connects the lake to the sea at Galway. It is the second largest lough in Ireland . It covers 178 km² and lies mostly in County Galway with a small area of its northeast corner in County Mayo.The first canal in...

 and the canalisation of the river, the river is now much narrower.