RiverFish

Roach · Rutilus rutilus

Roach in the River Lostock

Largest measured roach: 36 cm

The largest roach measured in Environment Agency surveys of the River Lostock was 36 cm, recorded at Sheep Hill Lane on 20 May 1999.

Across 788 measured roach, the median measured length was 15.1 cm.

Surveyors recorded weights for 143 roach. The median was 1.8 oz (0.052 kg) and the largest recorded weight was 7.1 oz (0.2 kg).

RiverFish uses Environment Agency survey measurements rather than rod-and-line angling records. These figures show fish measured during EA surveys of the River Lostock.

See roach records across England →

Most recent observation5 July 2023Cowling lane · 10 fish
Largest measured roach
36 cm
Median length
15.1 cm
Fish measured
788
Survey locations
18

Individual EA measurements

Largest measured roach

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

LengthSurvey dateSurvey locationSurvey ID
36 cm20 May 1999Sheep Hill Lane114587
32 cm26 Jul 1995Below STW outfall112890
27.7 cm23 Aug 2001Sheep Hill Lane90009
27.5 cm25 Jul 2018Mill Lane152970
27.5 cm24 Jul 2000Havelock Road115317
27.5 cm20 May 1999Sheep Hill Lane114587
27 cm24 Jul 1995Earnshaw Bridge113121
26 cm20 May 1999Sheep Hill Lane114587
26 cm27 Jul 1995Mill Lane112828
25.5 cm27 Jul 1995Below Farrington Weir112819

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where roach were found

Each point marks a survey location with at least one roach record.

Choose a point on the map to see what was recorded there.

Map points are approximate and don’t show fishing access. Check local permissions before visiting.

Place surveyedFirst recordedLast recordedVisits finding roach
Cowling lane4 Aug 20055 Jul 20234
Mill Lane24 Mar 199525 Jul 20186
Havelock Road24 Jul 20007 Jul 201111
Lower Copthurst10 Jul 199516 Jun 200510
Todd Lane South24 Jul 20007 Jun 20059
Sheep Hill Lane10 Jul 199525 Jun 20038
Sherdeley Road22 Jun 200124 Jun 20035
Kem Mill Lane24 Jul 200024 Jun 20034
Tudor Croft24 Jun 199930 Aug 20023
Cuerden Valley Park 124 Jul 200024 Jul 20001
Below STW outfall26 Jul 199519 Jul 20002
Above STW outfall26 Jul 199519 Jul 20002
Cricket Fields Lodge, Withnell14 Feb 199914 Feb 19991
Johnson House Farm31 Jul 199531 Jul 19951
Lostock Bridge Farm5 Apr 199528 Jul 19952
Below Farrington Weir27 Jul 199527 Jul 19951
Lostock Bridge at Croston22 Mar 199525 Jul 19952
Earnshaw Bridge24 Jul 199524 Jul 19951

Choose a point or table row to see the location. More survey visits can mean more records, but not necessarily more fish.

1995–2023

Survey records by year

Each bar shows how many survey visits recorded roach that year.

Fish measured by surveyors

Measured length distribution

See how the 788 measured fish were spread across different length ranges.

Smallest
0.1 cm
Lower quarter
12.1 cm
Median
15.1 cm
Upper quarter
17.2 cm
Largest
36 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 143 roach. This is a subset of the measured fish and may not represent the whole population.

Lightest
0.1 oz (0.002 kg)
Lower quarter
1.1 oz (0.032 kg)
Median
1.8 oz (0.052 kg)
Upper quarter
2.7 oz (0.076 kg)
Heaviest
7.1 oz (0.2 kg)

These are direct individual weights recorded by Environment Agency surveyors. Combined bulk weights are not included.

More fish in this river

Explore the River Lostock

Compare other species with enough survey and measurement data for a detailed page.

European eel Chub Gudgeon Dace Perch Flounder

Before you fish

Good to know

These are past survey records, so the fish present today may be different. Map points are approximate—check local access, permissions and fishing rules before visiting.

Learn how RiverFish uses the data →