Brown / sea trout · Salmo trutta

Brown / sea trout in the Nailsworth Stream

Largest measured brown / sea trout: 36.7 cm

The largest brown / sea trout measured in Environment Agency surveys of the Nailsworth Stream was 36.7 cm, recorded at Horsley Stream, Grigg Mill on 21 July 1997.

Across 1,139 measured brown / sea trout, the median measured length was 9.4 cm.

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

See brown / sea trout records across England →

Most recent observation8 August 2023Wyevale Garden Centre · 42 fish

Largest measured brown / sea trout: 36.7 cm
Median length: 9.4 cm
Fish measured: 1,139
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
36.7 cm	21 Jul 1997	Horsley Stream, Grigg Mill	55022
35.1 cm	21 Jul 1997	Horsley Stream, Grigg Mill	55022
34.5 cm	9 Mar 1992	Cherrington	55045
33.4 cm	17 Mar 1992	Miry Brook, Nailsworth	55037
32.4 cm	9 Mar 1992	Gatcombe d/s WRW	55044
32.4 cm	9 Mar 1992	Gatcombe d/s WRW	55044
31.9 cm	23 Aug 1995	Gatcombe d/s WRW	55043
31.7 cm	12 Aug 2009	Wyevale Garden Centre	118392
30.2 cm	9 Mar 1992	Gatcombe d/s WRW	55044
29.9 cm	22 Aug 1995	Kimmins Mill, Stroud	55052

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
Wyevale Garden Centre	12 Aug 2009	8 Aug 2023	4
Gatcombe d/s WRW	9 Mar 1992	8 Aug 2023	8
Kimmins Mill, Stroud	11 Mar 1992	13 Jul 2011	4
Cherrington	9 Mar 1992	24 Jul 2002	3
Horsley Stream, Grigg Mill	11 Mar 1992	21 Jul 1997	3
Horsley Stream, Washpool	23 Jun 1997	23 Jun 1997	1
Miry Brook, Nailsworth	17 Mar 1992	16 Jun 1997	2
Eygpt Mills	17 Mar 1992	16 Jun 1997	2
Avening Stream	9 Mar 1992	16 Jun 1997	2

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

1992–2023

Survey records by year

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

792

093

094

395

096

897

098

099

000

001

202

003

004

005

006

007

008

209

010

311

012

013

014

015

016

217

018

019

020

021

022

223

Fish measured by surveyors

Measured length distribution

See how the 1,139 measured fish were spread across different length ranges.

Smallest: 3.4 cm
Lower quarter: 6.7 cm
Median: 9.4 cm
Upper quarter: 14.8 cm
Largest: 36.7 cm

0–99 mm

604

100–199 mm

429

200–299 mm

300–399 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Nailsworth Stream

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

Bullhead European eel 3-spined stickleback Rainbow trout

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 →