The River Asker is a small river in

Dorset Dorset ( ; archaically: Dorsetshire , ) is a county in South West England on the English Channel coast. The ceremonial county comprises the unitary authority areas of Bournemouth, Christchurch and Poole and Dorset. Covering an area of , ...

, England. It rises on the

chalk Chalk is a soft, white, porous, sedimentary carbonate rock. It is a form of limestone composed of the mineral calcite and originally formed deep under the sea by the compression of microscopic plankton that had settled to the sea floor. Ch ...

slopes of

Eggardon Hill Eggardon Hill is a prehistoric hillfort on a hill in Dorset, England. It is located on chalk uplands approximately four miles to the east of the town of Bridport. The Hill Eggardon Hill stands above sea level and is classified as a Hump (hi ...

, approximately east of

Bridport Bridport is a market town in Dorset, England, inland from the English Channel near the confluence of the River Brit and its tributary the Asker. Its origins are Saxon and it has a long history as a rope-making centre. On the coast and wit ...

. It flows west-northwest through the villages of

Askerswell Askerswell () is a small village and civil parish in the county of Dorset in southwest England. It is sited on the small River Asker. It lies west of the county town Dorchester. The parish has an area of and in the northeast includes the wes ...

to which it gives its name,

Uploders Uploders is a small village in Dorset, England. It consists mainly of houses, and has a pub, the ''Crown'', a Grade II listed Methodist chapel and a playing field. The River Asker runs through the village. It is a linear village, surrounding the ...

, where many cottages have gardens backing onto the river, and

Loders Loders is a village and civil parish in the English county of Dorset. It lies north-east of the town of Bridport. It is a linear village, sited in the valley of the small River Asker, between Waddon Hill and Boarsbarrow Hill. In the 2011 ce ...

. Here it heads west towards Bradpole, where it is joined by the small Mangerton Brook flowing in from the north. It then flows southwest into Bridport, passing underneath the A3066 and B3162 roads in the town. In this section there are

weir A weir or low head dam is a barrier across the width of a river that alters the flow characteristics of water and usually results in a change in the height of the river level. Weirs are also used to control the flow of water for outlets of l ...

s and

fish ladder A fish ladder, also known as a fishway, fish pass, fish steps, or fish cannon is a structure on or around artificial and natural barriers (such as dams, locks and waterfalls) to facilitate diadromous fishes' natural migration as well as move ...

s. South of the B3162, between Bridport and Bothenhampton, the river also forms the western boundary of the Askers Meadow Nature Reserve, which was designated a Local Nature Reserve in 2004. The river then flows under the B3157 road and joins the

River Brit The River Brit is a river in west Dorset in south-west England, which rises just to the north of Beaminster. It then flows south to Netherbury and Bridport, where it is joined by tributaries: the River Simene and River Asker. South of Bridport, ...

beside Palmers Brewery in the south of the town.

Water quality

The Environment Agency measure water quality of the river systems in England. Each is given an overall ecological status, which may be one of five levels: high, good, moderate, poor and bad. There are several components that are used to determine this, including biological status, which looks at the quantity and varieties of

invertebrate Invertebrates are a paraphyletic group of animals that neither possess nor develop a vertebral column (commonly known as a ''backbone'' or ''spine''), derived from the notochord. This is a grouping including all animals apart from the chordate ...

s, angiosperms and fish. Chemical status, which compares the concentrations of various chemicals against known safe concentrations, is rated good or fail. Text was copied from this source, which is available under a
Open Government Licence v3.0
© Crown copyright. Water quality of the River Asker in 2016:

Notes

Rivers of Dorset {{England-river-stub