Roach · Rutilus rutilus

Roach in the River Black Sewer

Largest measured roach: 29 cm

The largest roach measured in Environment Agency surveys of the River Black Sewer was 29 cm, recorded at Kings Barn Farm, d/s STW on 3 September 2012.

Across 255 measured roach, the median measured length was 11.8 cm.

Surveyors recorded weights for 81 roach. The median was 0.7 oz (0.02 kg) and the largest recorded weight was 7.4 oz (0.21 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 Black Sewer.

See roach records across England →

Most recent observation3 September 2012Kings Barn Farm, d/s STW · 139 fish

Largest measured roach: 29 cm
Median length: 11.8 cm
Fish measured: 255
Survey locations: 2

Individual EA measurements

Largest measured roach

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

Length	Survey date	Survey location	Survey ID
29 cm	3 Sept 2012	Kings Barn Farm, d/s STW	133875
28.4 cm	3 Sept 2012	Kings Barn Farm, d/s STW	133875
28.3 cm	3 Sept 2012	Kings Barn Farm, d/s STW	133875
28.2 cm	3 Sept 2012	Kings Barn Farm, d/s STW	133875
27.4 cm	3 Sept 2012	Kings Barn Farm, d/s STW	133875
27.2 cm	3 Sept 2012	Kings Barn Farm, d/s STW	133875
26.7 cm	3 Sept 2012	Kings Barn Farm, d/s STW	133875
25.1 cm	3 Sept 2012	Kings Barn Farm, d/s STW	133875
25 cm	3 Sept 2012	Kings Barn Farm, d/s STW	133875
24.6 cm	3 Sept 2012	Kings Barn Farm, d/s STW	133875

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 surveyed	First recorded	Last recorded	Visits finding roach
Kings Barn Farm, d/s STW	29 Jul 2003	3 Sept 2012	8
Black Sewer Upper	3 Aug 2011	3 Aug 2011	1

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

2003–2012

Survey records by year

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

103

104

105

006

107

108

109

110

111

112

Fish measured by surveyors

Measured length distribution

See how the 255 measured fish were spread across different length ranges.

Smallest: 1.1 cm
Lower quarter: 10.4 cm
Median: 11.8 cm
Upper quarter: 13.6 cm
Largest: 29 cm

0–99 mm

100–199 mm

180

200–299 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 81 roach. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0.3 oz (0.009 kg)
Lower quarter: 0.5 oz (0.015 kg)
Median: 0.7 oz (0.02 kg)
Upper quarter: 0.9 oz (0.026 kg)
Heaviest: 7.4 oz (0.21 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 Black Sewer

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

Brown / sea trout Stone loach European eel 3-spined stickleback Chub 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 →