Brown / sea trout · Salmo trutta

Brown / sea trout in the River R.Slea

Largest measured brown / sea trout: 58 cm

The largest brown / sea trout measured in Environment Agency surveys of the River R.Slea was 58 cm, recorded at Bypass Bridge on 22 September 2014.

Across 338 measured brown / sea trout, the median measured length was 19.6 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 R.Slea.

See brown / sea trout records across England →

Most recent observation20 September 2024DS Cogglesford Mill · 68 fish

Largest measured brown / sea trout: 58 cm
Median length: 19.6 cm
Fish measured: 338
Survey locations: 7

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
58 cm	22 Sept 2014	Bypass Bridge	143331
54.7 cm	14 Apr 2005	Bouncing Hills	84392
52.2 cm	22 Sept 2014	Bypass Bridge	143331
50.1 cm	22 Sept 2014	Bypass Bridge	143331
49.5 cm	22 Sept 2014	Bypass Bridge	143331
49.1 cm	22 Sept 2014	Bypass Bridge	143331
49 cm	22 Sept 2014	Bypass Bridge	143331
49 cm	12 Sept 2013	Bypass Bridge	138759
48.8 cm	22 Sept 2014	Bypass Bridge	143331
48.5 cm	20 Sept 2024	DS Cogglesford Mill	167410

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
DS Cogglesford Mill	20 Sept 2024	20 Sept 2024	1
Bypass Bridge	5 Apr 1994	19 Oct 2023	10
Upstream Cogglesford Mill	11 Oct 2018	11 Oct 2018	1
Cobblers Lock	15 Apr 2008	15 Apr 2008	1
Bouncing Hills	21 Mar 1994	14 Apr 2005	2
Ancaster	21 Mar 1994	21 Mar 1994	1
Boiling Wells Farm	18 Mar 1994	18 Mar 1994	1

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

1994–2024

Survey records by year

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

494

095

096

097

098

099

000

001

002

003

004

205

106

107

208

109

110

011

012

113

114

015

016

017

118

019

020

021

022

123

124

Fish measured by surveyors

Measured length distribution

See how the 338 measured fish were spread across different length ranges.

Smallest: 3.5 cm
Lower quarter: 16.3 cm
Median: 19.7 cm
Upper quarter: 31 cm
Largest: 58 cm

0–99 mm

100–199 mm

171

200–299 mm

300–399 mm

400–499 mm

500–599 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River R.Slea

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

European eel Roach 3-spined stickleback Gudgeon Dace 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 →