RiverFish

Roach · Rutilus rutilus

Roach in the River Glaven

Largest measured roach: 19.4 cm

The largest roach measured in Environment Agency surveys of the River Glaven was 19.4 cm, recorded at Hempstead , Split Hills Plantation on 5 February 2003.

Across 60 measured roach, the median measured length was 11.2 cm.

Surveyors recorded weights for 6 roach. The median was 1.2 oz (0.0345 kg) and the largest recorded weight was 4.4 oz (0.126 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 Glaven.

See roach records across England →

Most recent observation14 June 2017Upstream Glandford Mill · 1 fish
Largest measured roach
19.4 cm
Median length
11.2 cm
Fish measured
60
Survey locations
9

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
19.4 cm5 Feb 2003Hempstead , Split Hills Plantation99824
19.3 cm15 Jul 1999Letheringsett17751
19.3 cm13 Jul 1999Upstream Wiveton Bridge17753
18.9 cm9 Jul 1999Cley Sluice17754
17.8 cm9 Jul 1999Cley Sluice17754
17.2 cm9 Jul 1999Cley Sluice17754
16.7 cm14 Jun 2017Upstream Glandford Mill151957
16.6 cm13 Jul 1999Upstream Wiveton Bridge17753
16.4 cm31 Mar 1994Upstream Wiveton Bridge16853
16.2 cm31 Mar 1994Upstream Wiveton Bridge16853

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
Upstream Glandford Mill14 Jun 201714 Jun 20171
Letheringsett18 Jan 198815 May 20083
Hunworth11 Jan 198829 Apr 20083
u/s B1149 bridge, Holt6 Feb 20036 Feb 20031
Hempstead , Split Hills Plantation5 Feb 20035 Feb 20031
Selbrigg Lake outflow23 Jan 200323 Jan 20031
Upstream Wiveton Bridge31 Mar 199413 Jul 19992
Cley Sluice9 Jul 19999 Jul 19991
D/s Hunworth railway bridge22 Mar 199422 Mar 19941

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

1988–2017

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 60 measured fish were spread across different length ranges.

Smallest
4.3 cm
Lower quarter
10.1 cm
Median
11.2 cm
Upper quarter
14.9 cm
Largest
19.4 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 6 roach. This is a subset of the measured fish and may not represent the whole population.

Lightest
0.5 oz (0.015 kg)
Lower quarter
1.1 oz (0.03 kg)
Median
1.2 oz (0.0345 kg)
Upper quarter
1.8 oz (0.0502 kg)
Heaviest
4.4 oz (0.126 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 Glaven

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

Bullhead 3-spined stickleback European eel Brook lamprey Pike 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 →