Brown / sea trout · Salmo trutta

Brown / sea trout in the Withill Stream

Largest measured brown / sea trout: 22 cm

The largest brown / sea trout measured in Environment Agency surveys of the Withill Stream was 22 cm, recorded at Withill on 31 July 2002.

Across 252 measured brown / sea trout, the median measured length was 9.3 cm.

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

See brown / sea trout records across England →

Most recent observation23 July 2025Withill · 41 fish

Largest measured brown / sea trout: 22 cm
Median length: 9.3 cm
Fish measured: 252
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
22 cm	31 Jul 2002	Withill	72576
21.2 cm	18 Jul 2019	Withill	155148
20 cm	18 Jul 2019	Withill	155148
19.9 cm	31 Jul 2002	Withill	72576
19 cm	23 Jul 2025	Withill	178725
18.7 cm	23 Jul 2025	Withill	178725
18.5 cm	31 Jul 2002	Withill	72576
18.4 cm	31 Jul 2002	Withill	72576
18.2 cm	11 Jul 2013	Withill	137136
17.8 cm	11 Jul 2013	Withill	137136

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
Withill	28 Jun 1983	23 Jul 2025	7

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

1983–2025

Survey records by year

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

183

084

085

086

087

088

089

090

091

092

093

094

095

096

097

198

099

000

001

102

003

004

005

006

107

008

009

010

011

012

113

014

015

016

017

018

119

020

021

022

023

024

125

Fish measured by surveyors

Measured length distribution

See how the 252 measured fish were spread across different length ranges.

Smallest: 3.9 cm
Lower quarter: 5.7 cm
Median: 9.4 cm
Upper quarter: 12.2 cm
Largest: 22 cm

0–99 mm

140

100–199 mm

109

200–299 mm

Lengths are direct survey measurements rather than anglers’ catches.

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 →