Brown / sea trout · Salmo trutta

Brown / sea trout in the Swannington Beck

Largest measured brown / sea trout: 30.4 cm

The largest brown / sea trout measured in Environment Agency surveys of the Swannington Beck was 30.4 cm, recorded at Alderford Common on 17 December 2003.

Across 90 measured brown / sea trout, the median measured length was 13.3 cm.

Surveyors recorded weights for 14 brown / sea trout. The median was 2.2 oz (0.061 kg) and the largest recorded weight was 9.9 oz (0.28 kg).

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

See brown / sea trout records across England →

Most recent observation27 March 2015Swannington Bridge , Swannington · 14 fish

Largest measured brown / sea trout: 30.4 cm
Median length: 13.3 cm
Fish measured: 90
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.

Length	Survey date	Survey location	Survey ID
30.4 cm	17 Dec 2003	Alderford Common	99986
29.2 cm	18 Mar 2004	Swannington Bridge , Swannington	99988
28.1 cm	27 Mar 2015	Swannington Bridge , Swannington	144635
26.5 cm	17 Apr 2007	Alderford Common	105361
26.4 cm	4 Mar 2014	Swannington Bridge , Swannington	140527
25.8 cm	16 Dec 2003	Swannington Bridge , Swannington	99983
24.9 cm	17 Dec 2003	Alderford Common	99986
24.8 cm	18 Mar 2004	Swannington Bridge , Swannington	99988
24.7 cm	27 Mar 2015	Swannington Bridge , Swannington	144635
24.7 cm	4 Mar 2014	Swannington Bridge , Swannington	140527

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 surveyed	First recorded	Last recorded	Visits finding brown / sea trout
Swannington Bridge , Swannington	16 Dec 2003	27 Mar 2015	4
Hengrave Bridge , Swannington	19 Dec 2003	24 Mar 2015	3
Alderford Common	17 Dec 2003	17 Apr 2013	3
Felthorpe , Mill Lane Bridge	4 Feb 2009	4 Feb 2009	1

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

2003–2015

Survey records by year

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

303

104

005

006

107

008

209

010

011

012

113

114

215

Fish measured by surveyors

Measured length distribution

See how the 90 measured fish were spread across different length ranges.

Smallest: 6.2 cm
Lower quarter: 10.7 cm
Median: 13.3 cm
Upper quarter: 20.1 cm
Largest: 30.4 cm

0–99 mm

100–199 mm

200–299 mm

300–399 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 14 brown / sea trout. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0.1 oz (0.004 kg)
Lower quarter: 0.7 oz (0.021 kg)
Median: 2.2 oz (0.061 kg)
Upper quarter: 4.6 oz (0.1292 kg)
Heaviest: 9.9 oz (0.28 kg)

These are direct individual weights recorded by Environment Agency surveyors. Combined bulk weights are not included.

More fish in this river

Explore the Swannington Beck

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

3-spined stickleback Bullhead 10-spined stickleback Minnow Chub Stone loach

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 →