RiverFish

Brown / sea trout · Salmo trutta

Brown / sea trout in the River Brock

Largest measured brown / sea trout: 45 cm

The largest brown / sea trout measured in Environment Agency surveys of the River Brock was 45 cm, recorded at Myerscough College on 25 August 2009.

Across 975 measured brown / sea trout, the median measured length was 10.5 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 Brock.

See brown / sea trout records across England →

Most recent observation22 September 2025Myerscough College · 21 fish
Largest measured brown / sea trout
45 cm
Median length
10.5 cm
Fish measured
975
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.

LengthSurvey dateSurvey locationSurvey ID
45 cm25 Aug 2009Myerscough College118530
44.6 cm25 Aug 2009Myerscough College118530
38.2 cm22 Sept 2025Myerscough College180293
37.9 cm22 Sept 2025Myerscough College180293
37.3 cm5 Aug 2005Myerscough College88464
34.4 cm8 Jul 2019Myerscough College154785
34.3 cm28 Aug 2007Myerscough College110281
33.5 cm14 Jul 2011Myerscough College126982
33 cm30 Jul 2010Myerscough College123215
32.9 cm22 Sept 2025Myerscough College180293

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 surveyedFirst recordedLast recordedVisits finding brown / sea trout
Myerscough College28 Aug 200122 Sept 202521
Brock Bottoms1 Sept 199930 Jun 20225
Nearer Light Ash24 Aug 199913 Sept 20063
Packhorse Bridge6 Oct 19996 Oct 19991
Holmhouse Farm6 Oct 19996 Oct 19991
Walmsley Bridge1 Sept 19991 Sept 19991
A6 Road Bridge24 Aug 199924 Aug 19991
Jack Anderton Bridge2 Aug 19992 Aug 19991
Bleasedale Post Office2 Aug 19992 Aug 19991

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

1999–2025

Survey records by year

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

Fish measured by surveyors

Measured length distribution

See how the 975 measured fish were spread across different length ranges.

Smallest
3 cm
Lower quarter
7 cm
Median
10.5 cm
Upper quarter
18 cm
Largest
45 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Brock

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

European eel Atlantic salmon Dace Brook lamprey Chub Flounder

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 →