RiverFish

Brown / sea trout · Salmo trutta

Brown / sea trout in the Birkin Brook

Largest measured brown / sea trout: 43 cm

The largest brown / sea trout measured in Environment Agency surveys of the Birkin Brook was 43 cm, recorded at Bi02 on 23 July 1996.

Across 19 measured brown / sea trout, the median measured length was 33.5 cm.

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

See brown / sea trout records across England →

Most recent observation24 July 2025Bobi05 · 2 fish
Largest measured brown / sea trout
43 cm
Median length
33.5 cm
Fish measured
19
Survey locations
3

Individual EA measurements

Largest measured brown / sea trout

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

LengthSurvey dateSurvey locationSurvey ID
43 cm23 Jul 1996Bi0256371
39 cm28 Jun 2007Bobi05105959
35.9 cm19 Aug 1996Bi0356372
34.9 cm30 Aug 2005Bobi0585856
34.6 cm30 Aug 2005Bobi0585856
34.6 cm30 Aug 2005Bobi0585856
34 cm19 Aug 1996Bi0356372
33.5 cm28 Jun 2007Bobi05105959
33.5 cm28 Jun 2007Bobi05105959
33.5 cm30 Aug 2005Bobi0585856

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

Explore the river

Where brown / sea trout were found

Each point marks a survey location with at least one brown / sea trout 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 brown / sea trout
Bobi0530 Aug 200524 Jul 20253
Bi0319 Aug 199619 Aug 19961
Bi0223 Jul 199623 Jul 19961

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

1996–2025

Survey records by year

Each bar shows how many survey visits recorded brown / sea trout that year.

Fish measured by surveyors

Measured length distribution

See how the 19 measured fish were spread across different length ranges.

Smallest
21.2 cm
Lower quarter
24.9 cm
Median
33.5 cm
Upper quarter
34.6 cm
Largest
43 cm

Lengths are direct survey measurements rather than anglers’ catches.

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 →