RiverFish

Brown / sea trout · Salmo trutta

Brown / sea trout in the River Blyth

Largest measured brown / sea trout: 39.2 cm

The largest brown / sea trout measured in Environment Agency surveys of the River Blyth was 39.2 cm, recorded at River Blyth at Plessey Farm on 24 July 2024.

Across 813 measured brown / sea trout, the median measured length was 7.3 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 Blyth.

See brown / sea trout records across England →

Most recent observation24 July 2024River Blyth at Humford Mill · 22 fish
Largest measured brown / sea trout
39.2 cm
Median length
7.3 cm
Fish measured
813
Survey locations
12

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
39.2 cm24 Jul 2024River Blyth at Plessey Farm167550
34.6 cm2 Aug 2010River Blyth at Plessey Farm124809
31 cm27 Jun 2005River Blyth at Humsford (c)89246
30.7 cm21 Jul 2014River Blyth at Humford Mill141757
29.1 cm27 Jun 2005River Blyth at Humsford (c)89246
28.9 cm2 Aug 2010River Blyth at Plessey Farm124809
27.5 cm2 Aug 2012River Blyth at Plessey Farm132590
27.5 cm27 Jun 2005River Blyth at Humsford (c)89246
25.6 cm2 Aug 2010River Blyth at Humford Mill124927
25.5 cm24 Jul 2024River Blyth at Plessey Farm167550

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
River Blyth at Plessey Farm19 Oct 199324 Jul 202411
River Blyth at Humford Mill17 Aug 200724 Jul 202411
River Blyth at Shilvington Bridge2 Aug 201223 Jul 20242
River Blyth at Bellasis Bridge20 Oct 199323 Jul 20243
Catraw Burn1 Aug 201215 Jul 20242
How Burn at Whiteside30 Jul 201210 Jul 20242
River Blyth at Thornyford20 Oct 199327 Jun 20167
Cadgers Burn at Kirkley Hall12 Oct 20084 Jul 20142
River Blyth at Stannington Bridge1 Aug 20121 Aug 20121
River Blyth at Howburn Bridge (WFD Site)4 Jul 20114 Jul 20111
River Blyth at Humsford (c)27 Jun 200527 Jun 20051
East Trewick20 Oct 199320 Oct 19931

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

1993–2024

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 813 measured fish were spread across different length ranges.

Smallest
4.7 cm
Lower quarter
6.4 cm
Median
7.3 cm
Upper quarter
12.8 cm
Largest
39.2 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Blyth

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

Stone loach Minnow 3-spined stickleback European eel Grayling Gudgeon

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 →