RiverFish

Roach · Rutilus rutilus

Roach in the River Weaver

Largest measured roach: 29.5 cm

The largest roach measured in Environment Agency surveys of the River Weaver was 29.5 cm, recorded at Wewe05 on 8 June 2004.

Across 820 measured roach, the median measured length was 10.6 cm.

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

See roach records across England →

Most recent observation23 July 2026Wewe25 · 2 fish
Largest measured roach
29.5 cm
Median length
10.6 cm
Fish measured
820
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
29.5 cm8 Jun 2004Wewe0580204
23 cm21 Jul 2003Wewe0576411
22.8 cm13 Jul 2006Wewe24100174
21.5 cm13 Jul 2006Wewe24100174
21 cm2 Aug 2010Wewe05123232
20.5 cm20 Jul 1999We4560482
20 cm10 Jul 2006Wewe05100172
20 cm30 Jun 1999We2860371
19.7 cm2 Aug 2010Wewe05123232
19.5 cm13 Jul 2006Wewe24100174

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
Wewe2525 Jun 199923 Jul 20268
Wewe0418 Jul 202418 Jun 20262
Wewe2413 Jul 200619 Aug 20243
Wewe0513 Sept 20022 Aug 20105
Wewe1030 Jun 199921 Jul 20083
Wewe206 Sept 19998 Jun 20042
We141 Jun 20041 Jun 20041
We416 Sept 19996 Sept 19991
We4520 Jul 199920 Jul 19991
We44A20 Jul 199920 Jul 19991
We2520 Jul 199920 Jul 19991
We386 Jul 19996 Jul 19991
We376 Jul 19996 Jul 19991
We3130 Jun 199930 Jun 19991
We2830 Jun 199930 Jun 19991
We2630 Jun 199930 Jun 19991
We2329 Jun 199929 Jun 19991
We2426 Jun 199926 Jun 19991

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

1999–2026

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 820 measured fish were spread across different length ranges.

Smallest
3.5 cm
Lower quarter
8.8 cm
Median
10.6 cm
Upper quarter
13 cm
Largest
29.5 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Weaver

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

Gudgeon Stone loach Chub Perch 3-spined stickleback Dace

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 →