RiverFish

Brown / sea trout · Salmo trutta

Brown / sea trout in the North Stream

Largest measured brown / sea trout: 44.8 cm

The largest brown / sea trout measured in Environment Agency surveys of the North Stream was 44.8 cm, recorded at 9 Hatches on 7 September 2011.

Across 480 measured brown / sea trout, the median measured length was 11.3 cm.

Surveyors recorded weights for 29 brown / sea trout. The median was 0.6 oz (0.016 kg) and the largest recorded weight was 4.4 oz (0.125 kg).

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

See brown / sea trout records across England →

Most recent observation17 September 20259 Hatches · 29 fish
Largest measured brown / sea trout
44.8 cm
Median length
11.3 cm
Fish measured
480
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
44.8 cm7 Sept 20119 Hatches127807
41.3 cm9 Jul 20159 Hatches145396
40.3 cm2 Jul 20199 Hatches154769
39.7 cm4 Sept 20069 Hatches101524
39.2 cm28 Aug 20139 Hatches138682
38.1 cm13 Sept 2005Carrier north of Tenantrees86480
34.6 cm2 Jul 20199 Hatches154769
34.6 cm13 Sept 2005Carrier north of Tenantrees86480
34.5 cm13 Sept 2005Carrier north of Tenantrees86480
34.3 cm8 Sept 2009Duddle Farm119238

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
9 Hatches29 Oct 200217 Sept 202514
Carrier north of Tenantrees13 Sept 200515 Sept 20092
Duddle Farm21 Sept 20058 Sept 20092
Middle Channel at Tenantrees13 Sept 200513 Sept 20051

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

2002–2025

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 480 measured fish were spread across different length ranges.

Smallest
7 cm
Lower quarter
9.6 cm
Median
11.3 cm
Upper quarter
20.1 cm
Largest
44.8 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 29 brown / sea trout. This is a subset of the measured fish and may not represent the whole population.

Lightest
0.2 oz (0.007 kg)
Lower quarter
0.4 oz (0.011 kg)
Median
0.6 oz (0.016 kg)
Upper quarter
0.8 oz (0.023 kg)
Heaviest
4.4 oz (0.125 kg)

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

More fish in this river

Explore the North Stream

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

Atlantic salmon Grayling Pike European eel Bullhead Minnow

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 →