Brown / sea trout · Salmo trutta

Brown / sea trout in the River Main Barnstaple Yeo

Largest measured brown / sea trout: 28.6 cm

The largest brown / sea trout measured in Environment Agency surveys of the River Main Barnstaple Yeo was 28.6 cm, recorded at New Mills (Sp/WFD) on 1 September 2021.

Across 460 measured brown / sea trout, the median measured length was 14.5 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 Barnstaple Yeo.

See brown / sea trout records across England →

Most recent observation19 August 2025Shirwell Mill (Sp) · 48 fish

Largest measured brown / sea trout: 28.6 cm
Median length: 14.5 cm
Fish measured: 460
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.

Length	Survey date	Survey location	Survey ID
28.6 cm	1 Sept 2021	New Mills (Sp/WFD)	160456
27 cm	19 Sept 2018	New Mills (Sp/WFD)	153605
26.5 cm	1 Sept 2021	New Mills (Sp/WFD)	160456
26.2 cm	5 Aug 2010	New Mills (Sp/WFD)	123324
25.8 cm	19 Aug 2025	New Mills (Sp/WFD)	178418
25.1 cm	19 Sept 2018	New Mills (Sp/WFD)	153605
25 cm	19 Sept 2018	New Mills (Sp/WFD)	153605
24.6 cm	19 Sept 2018	New Mills (Sp/WFD)	153605
24.4 cm	19 Sept 2018	New Mills (Sp/WFD)	153605
24 cm	5 Aug 2010	New Mills (Sp/WFD)	123324

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
Shirwell Mill (Sp)	9 Sept 1996	19 Aug 2025	5
New Mills (Sp/WFD)	17 Aug 2007	19 Aug 2025	8
East Down (Sp)*	9 Sept 1996	23 Sept 1999	2
Riversmead (Sp)*	9 Sept 1996	9 Sept 1996	1

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

1996–2025

Survey records by year

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

396

097

098

199

000

001

002

003

004

105

006

107

008

009

110

011

212

013

014

015

016

017

218

019

020

121

122

123

024

225

Fish measured by surveyors

Measured length distribution

See how the 460 measured fish were spread across different length ranges.

Smallest: 5.9 cm
Lower quarter: 9.7 cm
Median: 14.5 cm
Upper quarter: 17 cm
Largest: 28.6 cm

0–99 mm

120

100–199 mm

283

200–299 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Main Barnstaple Yeo

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

Bullhead European eel Atlantic salmon

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 →