Brown / sea trout · Salmo trutta

Brown / sea trout in the Warslow Brook

Largest measured brown / sea trout: 39 cm

The largest brown / sea trout measured in Environment Agency surveys of the Warslow Brook was 39 cm, recorded at Stoneyfold Farm on 5 October 2005.

Across 314 measured brown / sea trout, the median measured length was 10.2 cm.

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

See brown / sea trout records across England →

Most recent observation11 September 2025Stoneyfold Farm · 2 fish

Largest measured brown / sea trout: 39 cm
Median length: 10.2 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
39 cm	5 Oct 2005	Stoneyfold Farm	86731
38.8 cm	22 Mar 1991	Stoneyfold Farm	4822
31.2 cm	30 Mar 1994	Stoneyfold Farm	5019
30.9 cm	30 Mar 1994	Stoneyfold Farm	5019
30.6 cm	30 Mar 1994	Stoneyfold Farm	5019
25.8 cm	22 Apr 1997	Stoneyfold Farm	5182
25.2 cm	22 Apr 1997	Stoneyfold Farm	5182
24.9 cm	22 Apr 1997	Stoneyfold Farm	5182
24.6 cm	10 Sept 2013	Stoneyfold Farm	139092
24.5 cm	5 Oct 2005	Stoneyfold Farm	86731

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
Stoneyfold Farm	22 Mar 1991	11 Sept 2025	8

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

1991–2025

Survey records by year

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

191

092

093

194

095

096

197

098

099

000

001

002

003

004

105

006

007

008

009

110

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 314 measured fish were spread across different length ranges.

Smallest: 5 cm
Lower quarter: 7.8 cm
Median: 10.2 cm
Upper quarter: 13.9 cm
Largest: 39 cm

0–99 mm

154

100–199 mm

142

200–299 mm

300–399 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Warslow Brook

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

Bullhead Stone loach

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 →