RiverFish

Brown / sea trout · Salmo trutta

Brown / sea trout in the River Dun

Largest measured brown / sea trout: 39.5 cm

The largest brown / sea trout measured in Environment Agency surveys of the River Dun was 39.5 cm, recorded at Old Vicarage on 5 August 2014.

Across 368 measured brown / sea trout, the median measured length was 17.4 cm.

Surveyors recorded weights for 19 brown / sea trout. The median was 7.5 oz (0.214 kg) and the largest recorded weight was 1 lb 8.2 oz (0.685 kg).

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

See brown / sea trout records across England →

Most recent observation15 September 2025Kimbridge Farmhouse · 64 fish
Largest measured brown / sea trout
39.5 cm
Median length
17.4 cm
Fish measured
368
Survey locations
7

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
39.5 cm5 Aug 2014Old Vicarage142116
39.4 cm9 Jul 2004Sawmill80390
37.4 cm7 Jul 2004Dunbridge80426
36 cm7 Aug 2025Old Vicarage179871
35 cm4 Apr 2012Blue Pool131018
34.7 cm7 Jul 2004Dunbridge80426
34.1 cm7 Jul 2004Dunbridge80426
33 cm5 Aug 2014Old Vicarage142116
32.8 cm5 Aug 2014Old Vicarage142116
32.6 cm7 Jul 2004Dunbridge80426

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
Kimbridge Farmhouse15 Sept 202515 Sept 20251
Old Vicarage28 Sept 20127 Aug 20254
Park Farm10 Apr 20122 Jul 20254
Dunbridge Station31 Jul 20121 Jul 20254
Blue Pool4 Apr 20124 Apr 20121
Sawmill9 Jul 20049 Jul 20041
Dunbridge7 Jul 20047 Jul 20041

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

2004–2025

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 368 measured fish were spread across different length ranges.

Smallest
4.8 cm
Lower quarter
9 cm
Median
17.4 cm
Upper quarter
21 cm
Largest
39.5 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 19 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
2.5 oz (0.0715 kg)
Median
7.5 oz (0.214 kg)
Upper quarter
15.6 oz (0.4425 kg)
Heaviest
1 lb 8.2 oz (0.685 kg)

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

More fish in this river

Explore the River Dun

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

Bullhead 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 →