Brown / sea trout · Salmo trutta

Brown / sea trout in the Keasden Beck

Largest measured brown / sea trout: 20.5 cm

The largest brown / sea trout measured in Environment Agency surveys of the Keasden Beck was 20.5 cm, recorded at Clapham Hall Wood on 29 July 2025.

Across 219 measured brown / sea trout, the median measured length was 11.4 cm.

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

See brown / sea trout records across England →

Most recent observation29 July 2025Clapham Hall Wood · 17 fish

Largest measured brown / sea trout: 20.5 cm
Median length: 11.4 cm
Fish measured: 219
Survey locations: 3

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
20.5 cm	29 Jul 2025	Clapham Hall Wood	177637
19 cm	17 Jul 1991	Clapham Woods Farm	115202
18 cm	13 Aug 2013	Clapham Hall Wood	137994
18 cm	17 Jul 1991	Clapham Woods Farm	115202
17.5 cm	2 Oct 1997	Turner Ford	113448
17.5 cm	2 Oct 1997	Clapham Hall Wood	112507
17.5 cm	11 Sept 1991	Turner Ford	115201
17.2 cm	13 Aug 2013	Clapham Hall Wood	137994
17 cm	29 Jul 2025	Clapham Hall Wood	177637
17 cm	29 Jul 2025	Clapham Hall Wood	177637

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
Clapham Hall Wood	4 Aug 1982	29 Jul 2025	10
Turner Ford	11 Sept 1991	2 Oct 1997	2
Clapham Woods Farm	17 Jul 1991	17 Jul 1991	1

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

1982–2025

Survey records by year

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

182

183

184

185

086

087

088

089

090

291

092

093

094

095

096

297

098

099

000

001

002

003

004

005

006

107

008

009

010

011

012

113

014

015

116

017

018

119

020

021

022

023

024

125

Fish measured by surveyors

Measured length distribution

See how the 219 measured fish were spread across different length ranges.

Smallest: 4.5 cm
Lower quarter: 7.2 cm
Median: 11.4 cm
Upper quarter: 14.3 cm
Largest: 20.5 cm

0–99 mm

100–199 mm

125

200–299 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Keasden Beck

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

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 →