RiverFish

Brown / sea trout · Salmo trutta

Brown / sea trout in the River Main St.Austell

Largest measured brown / sea trout: 36.5 cm

The largest brown / sea trout measured in Environment Agency surveys of the River Main St.Austell was 36.5 cm, recorded at Sewers Bridge on 26 June 2018.

Across 559 measured brown / sea trout, the median measured length was 15.4 cm.

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

See brown / sea trout records across England →

Most recent observation29 May 2026u/s Menagwins · 34 fish
Largest measured brown / sea trout
36.5 cm
Median length
15.4 cm
Fish measured
559
Survey locations
2

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
36.5 cm26 Jun 2018Sewers Bridge153041
35.6 cm25 Sept 2003Sewers Bridge77874
35.5 cm4 Oct 2024Sewers Bridge179494
34.3 cm26 Jun 2018Sewers Bridge153041
34 cm26 Jun 2018Sewers Bridge153041
34 cm29 May 2009Sewers Bridge117360
32.3 cm26 Jun 2018Sewers Bridge153041
31 cm25 Sept 2003Sewers Bridge77874
30.3 cm26 Jun 2018Sewers Bridge153041
30.1 cm26 Jun 2018Sewers Bridge153041

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
u/s Menagwins25 Sept 200329 May 20267
Sewers Bridge25 Sept 200321 May 20267

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

2003–2026

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 559 measured fish were spread across different length ranges.

Smallest
3.2 cm
Lower quarter
8.8 cm
Median
15.4 cm
Upper quarter
19 cm
Largest
36.5 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Main St.Austell

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

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 →