RiverFish

Brown / sea trout · Salmo trutta

Brown / sea trout in the Bolham River

Largest measured brown / sea trout: 23.7 cm

The largest brown / sea trout measured in Environment Agency surveys of the Bolham River was 23.7 cm, recorded at Hartsmoor Bridge (Sp) on 29 May 2025.

Across 110 measured brown / sea trout, the median measured length was 5.2 cm.

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

See brown / sea trout records across England →

Most recent observation27 May 2026Hartsmoor Bridge (Sp) · 28 fish
Largest measured brown / sea trout
23.7 cm
Median length
5.2 cm
Fish measured
110
Survey locations
1

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
23.7 cm29 May 2025Hartsmoor Bridge (Sp)177451
23.3 cm21 Jun 2013Hartsmoor Bridge (Sp)136551
23.1 cm21 Jun 2013Hartsmoor Bridge (Sp)136551
23.1 cm20 May 2008Hartsmoor Bridge (Sp)111712
22.2 cm21 Jun 2013Hartsmoor Bridge (Sp)136551
21.4 cm20 May 2008Hartsmoor Bridge (Sp)111712
20.6 cm21 Jun 2013Hartsmoor Bridge (Sp)136551
20 cm21 Jun 2013Hartsmoor Bridge (Sp)136551
19 cm21 Jun 2013Hartsmoor Bridge (Sp)136551
18.2 cm20 May 2008Hartsmoor Bridge (Sp)111712

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
Hartsmoor Bridge (Sp)21 May 199727 May 20267

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

1997–2026

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 110 measured fish were spread across different length ranges.

Smallest
2.5 cm
Lower quarter
4.5 cm
Median
5.2 cm
Upper quarter
12.6 cm
Largest
23.7 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Bolham River

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

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 →