RiverFish

Roach · Rutilus rutilus

Roach in the River South Walsham Broad

Largest measured roach: 22.1 cm

The largest roach measured in Environment Agency surveys of the River South Walsham Broad was 22.1 cm, recorded at 234 on 4 August 1987.

Across 3,056 measured roach, the median measured length was 8.4 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 South Walsham Broad.

See roach records across England →

Most recent observation17 September 2002234 · 139 fish
Largest measured roach
22.1 cm
Median length
8.4 cm
Fish measured
3,056
Survey locations
6

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
22.1 cm4 Aug 198723417617
19.2 cm17 Aug 199923717769
18.6 cm17 Aug 199923717769
18.2 cm6 Sept 199423417624
18 cm23 Aug 199923417766
18 cm14 Sept 199023417621
18 cm4 Aug 198723417617
17.9 cm6 Sept 199423417624
17.8 cm24 Aug 199923217764
17.8 cm6 Sept 199423417624

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
2366 Aug 198717 Sept 20023
2344 Aug 198717 Sept 20025
2325 Aug 198717 Sept 20023
2335 Aug 198725 Aug 19992
2356 Aug 198718 Aug 19994
2376 Aug 198717 Aug 19994

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

1987–2002

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 3,056 measured fish were spread across different length ranges.

Smallest
3.1 cm
Lower quarter
7.5 cm
Median
8.4 cm
Upper quarter
10.1 cm
Largest
22.1 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River South Walsham Broad

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

Common bream Perch Ruffe Flounder Pike Smelt

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 →