RiverFish

Brown / sea trout · Salmo trutta

Brown / sea trout in the River Ems

Largest measured brown / sea trout: 50.4 cm

The largest brown / sea trout measured in Environment Agency surveys of the River Ems was 50.4 cm, recorded at Lumley Mill sq on 29 October 2001.

Across 364 measured brown / sea trout, the median measured length was 12.7 cm.

Surveyors recorded weights for 71 brown / sea trout. The median was 0.6 oz (0.017 kg) and the largest recorded weight was 3 lb 10.4 oz (1.66 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 Ems.

See brown / sea trout records across England →

Most recent observation10 June 2025Brook Meadow Footbridge · 52 fish
Largest measured brown / sea trout
50.4 cm
Median length
12.7 cm
Fish measured
364
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
50.4 cm29 Oct 2001Lumley Mill sq22683
48.4 cm29 Oct 2001Lumley Mill sq22683
46.7 cm29 Oct 2001Lumley Mill sq22683
38.5 cm29 Oct 2001Lumley Mill sq22683
37.4 cm29 Oct 2001Lumley Mill sq22683
35.1 cm29 Oct 2001Lumley Mill sq22683
32.7 cm25 Oct 2001Westbourne sq22684
31.9 cm12 Aug 2021Mill Meadows Farm160091
31.5 cm13 Aug 2007Westbourne sq106454
30.7 cm19 Oct 2010Downstream Hampshire Bridge125267

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
Westbourne sq25 Oct 200110 Jun 20255
Brook Meadow Footbridge20 May 201510 Jun 20252
Mill Meadows Farm12 Aug 202112 Aug 20211
Deep Springs12 Aug 202112 Aug 20211
Brook Meadow8 May 20138 May 20131
Downstream Hampshire Bridge19 Oct 201019 Oct 20101
Lumley Mill sq29 Oct 20017 Jun 20072

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

2001–2025

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 364 measured fish were spread across different length ranges.

Smallest
3.7 cm
Lower quarter
8.9 cm
Median
12.7 cm
Upper quarter
18.5 cm
Largest
50.4 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 71 brown / sea trout. This is a subset of the measured fish and may not represent the whole population.

Lightest
0.1 oz (0.003 kg)
Lower quarter
0.4 oz (0.01 kg)
Median
0.6 oz (0.017 kg)
Upper quarter
3.6 oz (0.102 kg)
Heaviest
3 lb 10.4 oz (1.66 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 Ems

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

European eel Bullhead Pike

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 →