RiverFish

Brown / sea trout · Salmo trutta

Brown / sea trout in the Main River Chew

Largest measured brown / sea trout: 52 cm

The largest brown / sea trout measured in Environment Agency surveys of the Main River Chew was 52 cm, recorded at Downstream Chew Valley Lake (Te) on 8 July 2003.

Across 1,063 measured brown / sea trout, the median measured length was 20 cm.

Surveyors recorded weights for 464 brown / sea trout. The median was 3.7 oz (0.1045 kg) and the largest recorded weight was 3 lb 2.5 oz (1.43 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 Chew.

See brown / sea trout records across England →

Most recent observation18 June 2025Shrowl Bridge (Te) · 6 fish
Largest measured brown / sea trout
52 cm
Median length
20 cm
Fish measured
1,063
Survey locations
8

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
52 cm8 Jul 2003Downstream Chew Valley Lake (Te)76361
42.8 cm30 Jun 2005Shrowl Bridge (Te)84940
41.5 cm30 Jun 2005Shrowl Bridge (Te)84940
41.1 cm8 Sept 2009Stanton Drew (Te)118852
40.4 cm18 Jun 2025Shrowl Bridge (Te)176992
40.4 cm6 Jul 2016Pensford (Te)148371
39.5 cm12 Jul 2002Shrowl Bridge (Te)55190
38.7 cm16 Jul 2019Pensford (Te)154790
37.5 cm31 Jul 2008Stanton Drew (Te)112218
37.2 cm6 Jul 2016Pensford (Te)148371

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
Shrowl Bridge (Te)12 Jul 200218 Jun 20258
Stanton Drew (Te)31 Aug 200511 Jul 202311
Pensford (Te)15 May 20026 Jul 202311
Compton Dando (Te)20 Jun 200327 Jun 202310
Keynsham Park (Te)12 Jul 201618 Jul 20192
Chewton Keynsham4 Sept 200717 Jul 20193
Coley8 Oct 20138 Oct 20131
Downstream Chew Valley Lake (Te)8 Jul 200313 Jul 20042

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 1,063 measured fish were spread across different length ranges.

Smallest
3.4 cm
Lower quarter
15.7 cm
Median
20 cm
Upper quarter
24.8 cm
Largest
52 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 464 brown / sea trout. This is a subset of the measured fish and may not represent the whole population.

Lightest
0 oz (0.001 kg)
Lower quarter
1.6 oz (0.045 kg)
Median
3.7 oz (0.1045 kg)
Upper quarter
6.8 oz (0.192 kg)
Heaviest
3 lb 2.5 oz (1.43 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 Chew

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

Bullhead Roach Minnow Stone loach European eel Gudgeon

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 →