Brown / sea trout · Salmo trutta

Brown / sea trout in the Trewalder Stream

Largest measured brown / sea trout: 23.5 cm

The largest brown / sea trout measured in Environment Agency surveys of the Trewalder Stream was 23.5 cm, recorded at Trewalder on 12 September 2002.

Across 314 measured brown / sea trout, the median measured length was 7.2 cm.

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

See brown / sea trout records across England →

Most recent observation18 July 2023Trewalder · 113 fish

Largest measured brown / sea trout: 23.5 cm
Median length: 7.2 cm
Fish measured: 314
Survey locations: 1

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.

Length	Survey date	Survey location	Survey ID
23.5 cm	12 Sept 2002	Trewalder	72166
20.2 cm	18 Jul 2017	Trewalder	150984
20.1 cm	18 Jul 2011	Trewalder	127046
18.5 cm	29 Jun 2006	Trewalder	100044
18.3 cm	29 Jun 2006	Trewalder	100044
18.2 cm	18 Jul 2011	Trewalder	127046
17.9 cm	18 Jul 2023	Trewalder	162806
17.9 cm	18 Jul 2023	Trewalder	162806
17.2 cm	18 Jul 2017	Trewalder	150984
16.8 cm	18 Jul 2017	Trewalder	150984

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 surveyed	First recorded	Last recorded	Visits finding brown / sea trout
Trewalder	16 Jul 1985	18 Jul 2023	16

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

1985–2023

Survey records by year

Each bar shows how many survey visits recorded brown / sea trout that year.

185

086

087

188

089

190

191

092

093

194

095

096

197

198

199

100

101

102

103

004

005

106

007

008

009

010

111

012

013

014

015

016

117

018

019

020

021

022

123

Fish measured by surveyors

Measured length distribution

See how the 314 measured fish were spread across different length ranges.

Smallest: 4.4 cm
Lower quarter: 6.2 cm
Median: 7.2 cm
Upper quarter: 11.2 cm
Largest: 23.5 cm

0–99 mm

227

100–199 mm

200–299 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Trewalder Stream

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 →