Brown / sea trout · Salmo trutta

Brown / sea trout in the Kirklees Brook

Largest measured brown / sea trout: 37 cm

The largest brown / sea trout measured in Environment Agency surveys of the Kirklees Brook was 37 cm, recorded at Site B on 4 September 2002.

Across 232 measured brown / sea trout, the median measured length was 15.4 cm.

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

See brown / sea trout records across England →

Most recent observation23 September 2025Iwki01 · 24 fish

Largest measured brown / sea trout: 37 cm
Median length: 15.4 cm
Fish measured: 232
Survey locations: 8

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
37 cm	4 Sept 2002	Site B	60121
35 cm	17 Jan 1997	Kb02	55751
33.8 cm	4 Sept 2002	Site B	60121
33.1 cm	4 Sept 2002	Site B	60121
33 cm	17 Jan 1997	Kb02	55751
29.4 cm	4 Sept 2002	Iwki01	60161
29.1 cm	4 Sept 2002	Iwki01	60161
27.5 cm	7 Aug 2013	Iwki04	139959
27.4 cm	4 Sept 2002	Site B	60121
26.1 cm	17 Jan 1997	Kb02	55751

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
Iwki01	4 Sept 2002	23 Sept 2025	4
Iwki04	7 Aug 2013	7 Aug 2013	1
Site C	4 Sept 2002	4 Sept 2002	1
Site B	4 Sept 2002	4 Sept 2002	1
Site A	4 Sept 2002	4 Sept 2002	1
Kb03	17 Jan 1997	17 Jan 1997	1
Kb02	17 Jan 1997	17 Jan 1997	1
Kb01	17 Jan 1997	17 Jan 1997	1

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

1997–2025

Survey records by year

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

397

098

099

000

001

402

003

004

005

006

007

008

009

010

011

012

213

014

015

016

017

018

119

020

021

022

023

024

125

Fish measured by surveyors

Measured length distribution

See how the 232 measured fish were spread across different length ranges.

Smallest: 2.3 cm
Lower quarter: 9 cm
Median: 15.4 cm
Upper quarter: 17.5 cm
Largest: 37 cm

0–99 mm

100–199 mm

120

200–299 mm

300–399 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Kirklees Brook

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

Bullhead Minnow 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 →