RiverFish

Brown / sea trout · Salmo trutta

Brown / sea trout in the Birker Beck

Largest measured brown / sea trout: 17 cm

The largest brown / sea trout measured in Environment Agency surveys of the Birker Beck was 17 cm, recorded at 1976.10 Birker Beck US Footbridge CPUE on 26 September 2024.

Across 177 measured brown / sea trout, the median measured length was 7.3 cm.

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

See brown / sea trout records across England →

Most recent observation21 August 20251976.00 PTC River Esk #2, Birker Beck · 74 fish
Largest measured brown / sea trout
17 cm
Median length
7.3 cm
Fish measured
177
Survey locations
4

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
17 cm26 Sept 20241976.10 Birker Beck US Footbridge CPUE167390
15.6 cm26 Sept 20241976.10 Birker Beck US Footbridge CPUE167390
13.5 cm21 Aug 20251976.00 PTC River Esk #2, Birker Beck178449
13.2 cm8 Aug 20231976.10 Birker Beck US Footbridge CPUE162945
13 cm21 Aug 20251976.00 PTC River Esk #2, Birker Beck178449
13 cm21 Aug 20251976.00 PTC River Esk #2, Birker Beck178449
12.9 cm21 Aug 20251976.00 PTC River Esk #2, Birker Beck178449
12.5 cm21 Aug 20251976.00 PTC River Esk #2, Birker Beck178449
12.4 cm26 Sept 20241976.10 Birker Beck US Footbridge CPUE167390
12.2 cm26 Sept 20241976.10 Birker Beck US Footbridge CPUE167390

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
1976.00 PTC River Esk #2, Birker Beck12 Aug 199421 Aug 20256
1976.10 Birker Beck US Footbridge CPUE8 Aug 202326 Sept 20242
Whincop Bridge12 Aug 199412 Aug 19941
1978.00 Birkerthwaite Farm, Birker Beck12 Aug 199412 Aug 19941

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

1994–2025

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 177 measured fish were spread across different length ranges.

Smallest
4.8 cm
Lower quarter
6.2 cm
Median
7.3 cm
Upper quarter
10.1 cm
Largest
17 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Birker Beck

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

Atlantic salmon European eel

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 →