RiverFish

Flounder · Platichthys flesus

Flounder in the River Oulton Broad

Largest measured flounder: 19.2 cm

The largest flounder measured in Environment Agency surveys of the River Oulton Broad was 19.2 cm, recorded at 252 on 11 August 1991.

Across 391 measured flounder, the median measured length was 6.1 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 Oulton Broad.

See flounder records across England →

Most recent observation12 August 1991253 · 80 fish
Largest measured flounder
19.2 cm
Median length
6.1 cm
Fish measured
391
Survey locations
4

Individual EA measurements

Largest measured flounder

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

LengthSurvey dateSurvey locationSurvey ID
19.2 cm11 Aug 199125217106
19 cm11 Aug 199125217106
17.7 cm7 Aug 199125017104
17.1 cm12 Aug 199125317107
16.8 cm9 Aug 199125117105
16.6 cm11 Aug 199125217106
16.4 cm7 Aug 199125017104
16.2 cm11 Aug 199125217106
16 cm11 Aug 199125217106
15.8 cm12 Aug 199125317107

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where flounder were found

Each point marks a survey location with at least one flounder 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 flounder
25312 Aug 199112 Aug 19911
25211 Aug 199111 Aug 19911
2519 Aug 19919 Aug 19911
2507 Aug 19917 Aug 19911

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

1991–1991

Survey records by year

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

Fish measured by surveyors

Measured length distribution

See how the 391 measured fish were spread across different length ranges.

Smallest
2.8 cm
Lower quarter
5.3 cm
Median
6.1 cm
Upper quarter
7.6 cm
Largest
19.2 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Oulton Broad

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

Common bream Roach Ruffe 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 →