Brown / sea trout · Salmo trutta

Brown / sea trout in the Main River Marden

Largest measured brown / sea trout: 41 cm

The largest brown / sea trout measured in Environment Agency surveys of the Main River Marden was 41 cm, recorded at Calne STW (Te) on 19 May 2011.

Across 476 measured brown / sea trout, the median measured length was 20 cm.

Surveyors recorded weights for 232 brown / sea trout. The median was 4.9 oz (0.1395 kg) and the largest recorded weight was 1 lb 8.6 oz (0.697 kg).

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

See brown / sea trout records across England →

Most recent observation28 July 2022Calne STW (Te) · 23 fish

Largest measured brown / sea trout: 41 cm
Median length: 20 cm
Fish measured: 476
Survey locations: 6

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
41 cm	19 May 2011	Calne STW (Te)	126463
40.5 cm	23 Apr 1998	Dalgety's	77062
38.4 cm	23 Apr 1998	Dalgety's	77062
36.9 cm	21 May 1998	Calne STW (Te)	77061
36.6 cm	23 Apr 1998	Dalgety's	77062
36 cm	21 May 1998	Calne STW (Te)	77061
35 cm	1 Jul 2003	Calne STW (Te)	76355
34.7 cm	21 May 1998	Calne STW (Te)	77061
33.8 cm	25 Jul 2002	Calne STW (Te)	60341
33.7 cm	19 Jul 2006	Calne STW (Te)	100280

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
Calne STW (Te)	21 May 1998	28 Jul 2022	9
Sprays Farm (Se-02)	12 Mar 1998	11 Jul 2017	3
Stanley	19 May 2011	19 May 2011	1
Downstream Calne	13 May 1998	13 May 1998	1
Dalgety's	23 Apr 1998	23 Apr 1998	1
Scott's Mill	14 Oct 1997	14 Oct 1997	1

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

1997–2022

Survey records by year

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

197

498

099

000

001

202

103

104

105

106

007

008

009

010

211

012

013

014

015

116

117

018

019

020

021

122

Fish measured by surveyors

Measured length distribution

See how the 476 measured fish were spread across different length ranges.

Smallest: 3.5 cm
Lower quarter: 15.7 cm
Median: 20 cm
Upper quarter: 24.7 cm
Largest: 41 cm

0–99 mm

100–199 mm

221

200–299 mm

209

300–399 mm

400–499 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 232 brown / sea trout. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0.5 oz (0.014 kg)
Lower quarter: 2.6 oz (0.0738 kg)
Median: 4.9 oz (0.1395 kg)
Upper quarter: 7.5 oz (0.2132 kg)
Heaviest: 1 lb 8.6 oz (0.697 kg)

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

More fish in this river

Explore the Main River Marden

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

Bullhead Minnow Roach Gudgeon Dace 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 →