Brown / sea trout · Salmo trutta

Brown / sea trout in the Cound Brook

Largest measured brown / sea trout: 39.5 cm

The largest brown / sea trout measured in Environment Agency surveys of the Cound Brook was 39.5 cm, recorded at Boreton Bridge on 6 September 2024.

Across 116 measured brown / sea trout, the median measured length was 16.1 cm.

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

See brown / sea trout records across England →

Most recent observation6 September 2024Boreton Bridge · 11 fish

Largest measured brown / sea trout: 39.5 cm
Median length: 16.1 cm
Fish measured: 116
Survey locations: 9

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
39.5 cm	6 Sept 2024	Boreton Bridge	168312
39.5 cm	2 Aug 2022	Venus Bank	161228
32.5 cm	18 Jun 2002	Upper Cound	52058
32 cm	6 Sept 2024	Boreton Bridge	168312
32 cm	13 Jun 2012	Boreton Bridge	131555
31.2 cm	16 Sept 2003	Boreton Bridge	77237
31 cm	9 Aug 2022	Little Ryton	161268
30.9 cm	9 Aug 2022	Stapleton	161269
30.4 cm	16 Sept 2003	Boreton Bridge	77237
29 cm	9 Aug 2022	Little Ryton	161268

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
Boreton Bridge	13 May 1991	6 Sept 2024	6
Stapleton	13 May 1991	9 Aug 2022	3
Little Ryton	9 Aug 2022	9 Aug 2022	1
Leebotwood	3 Jun 1991	8 Aug 2022	3
Venus Bank	13 May 1991	2 Aug 2022	4
Russells Meadow	28 Jun 2017	6 Jun 2019	2
Coppice Leasowes LNR	28 Jun 2017	28 Jun 2017	1
Upper Cound	13 May 1991	18 Jun 2002	3
Walkmills Trib.	3 Jun 1991	22 Jul 1997	2

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

1991–2024

Survey records by year

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

691

092

093

094

095

096

697

098

099

000

001

302

103

004

005

006

007

008

009

010

011

112

013

014

015

016

217

018

119

020

021

422

023

124

Fish measured by surveyors

Measured length distribution

See how the 116 measured fish were spread across different length ranges.

Smallest: 5.1 cm
Lower quarter: 7.9 cm
Median: 16.1 cm
Upper quarter: 25.4 cm
Largest: 39.5 cm

0–99 mm

100–199 mm

200–299 mm

300–399 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Cound Brook

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

Atlantic salmon European eel Chub 3-spined stickleback

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 →