RiverFish

Roach · Rutilus rutilus

Roach in the River Calder

Largest measured roach: 29 cm

The largest roach measured in Environment Agency surveys of the River Calder was 29 cm, recorded at Upstream Altham bridge on 24 April 1985.

Across 90 measured roach, the median measured length was 17.5 cm.

Surveyors recorded one individual weight: 2.3 oz (0.065 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 Calder.

See roach records across England →

Most recent observation27 July 1999Townley High School · 1 fish
Largest measured roach
29 cm
Median length
17.5 cm
Fish measured
90
Survey locations
4

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
29 cm24 Apr 1985Upstream Altham bridge112817
28.5 cm21 May 1984Upstream Altham bridge112808
28 cm24 Apr 1985Upstream Altham bridge112817
27.4 cm21 May 1984Upstream Altham bridge112808
27 cm24 Apr 1985Upstream Altham bridge112817
27 cm24 Apr 1985Upstream Altham bridge112817
27 cm24 Apr 1985Upstream Altham bridge112817
27 cm24 Apr 1985Upstream Altham bridge112817
27 cm24 Apr 1985Upstream Altham bridge112817
26.6 cm21 May 1984Upstream Altham bridge112808

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
Townley High School27 Jul 199927 Jul 19991
Upstream Altham bridge21 May 198412 Sept 19883
Downstream A59 Road Bridge23 Apr 198523 Apr 19851
Pendle Hall21 May 198421 May 19841

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

1984–1999

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 90 measured fish were spread across different length ranges.

Smallest
6.5 cm
Lower quarter
12.9 cm
Median
17.5 cm
Upper quarter
21.9 cm
Largest
29 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

One individual weight was recorded for this fish and river. This is a subset of the measured fish and may not represent the whole population.

Recorded weight
2.3 oz (0.065 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 Calder

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

European eel Brown / sea trout Bullhead Chub Gudgeon Perch

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 →