Brown / sea trout · Salmo trutta

Brown / sea trout in the Knathorne Brook

Largest measured brown / sea trout: 30.3 cm

The largest brown / sea trout measured in Environment Agency surveys of the Knathorne Brook was 30.3 cm, recorded at Bradiford Farm (Sp)* on 1 August 2012.

Across 13 measured brown / sea trout, the median measured length was 16.9 cm.

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

See brown / sea trout records across England →

Most recent observation15 August 2025Quarry Easton Copse(Sp) · 3 fish

Largest measured brown / sea trout: 30.3 cm
Median length: 16.9 cm
Fish measured: 13
Survey locations: 2

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
30.3 cm	1 Aug 2012	Bradiford Farm (Sp)*	132561
26 cm	15 Aug 2025	Quarry Easton Copse(Sp)	177913
22.9 cm	6 Aug 2018	Quarry Easton Copse(Sp)	153027
18.7 cm	6 Aug 2018	Quarry Easton Copse(Sp)	153027
17.5 cm	30 Aug 2016	Quarry Easton Copse(Sp)	149084
17 cm	6 Aug 2018	Quarry Easton Copse(Sp)	153027
16.9 cm	30 Aug 2016	Quarry Easton Copse(Sp)	149084
16.4 cm	15 Aug 2025	Quarry Easton Copse(Sp)	177913
16.1 cm	6 Aug 2018	Quarry Easton Copse(Sp)	153027
16.1 cm	6 Aug 2018	Quarry Easton Copse(Sp)	153027

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
Quarry Easton Copse(Sp)	30 Aug 2016	15 Aug 2025	3
Bradiford Farm (Sp)*	2 Sept 2005	1 Aug 2012	2

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

2005–2025

Survey records by year

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

105

006

007

008

009

010

011

112

013

014

015

116

017

118

019

020

021

022

023

024

125

Fish measured by surveyors

Measured length distribution

See how the 13 measured fish were spread across different length ranges.

Smallest: 7.4 cm
Lower quarter: 16.1 cm
Median: 16.9 cm
Upper quarter: 18.7 cm
Largest: 30.3 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 Knathorne Brook

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

Minnow Bullhead

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 →