RiverFish

Brown / sea trout · Salmo trutta

Brown / sea trout in the River Dunsop

Largest measured brown / sea trout: 50 cm

The largest brown / sea trout measured in Environment Agency surveys of the River Dunsop was 50 cm, recorded at Upstream Closes Barn on 3 September 1998.

Across 1,165 measured brown / sea trout, the median measured length was 11.5 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 Dunsop.

See brown / sea trout records across England →

Most recent observation1 June 2026Dunsop Bridge · 54 fish
Largest measured brown / sea trout
50 cm
Median length
11.5 cm
Fish measured
1,165
Survey locations
3

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
50 cm3 Sept 1998Upstream Closes Barn113826
49 cm1 Aug 1984Dunsop Bridge115504
46 cm2 Oct 2003Below Footholme79431
45.1 cm1 Jul 2009Dunsop Bridge117592
43 cm1 Aug 1984Dunsop Bridge115504
40.5 cm2 Oct 2003Below Footholme79431
36 cm1 Jul 2009Dunsop Bridge117592
36 cm3 Sept 1998Upstream Closes Barn113826
34 cm12 Aug 2013Below Footholme137889
34 cm1 Jul 2009Dunsop Bridge117592

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
Dunsop Bridge1 Aug 19841 Jun 202614
Below Footholme1 Aug 198412 Jun 202418
Upstream Closes Barn1 Aug 19843 Sept 19982

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

1984–2026

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 1,165 measured fish were spread across different length ranges.

Smallest
2.9 cm
Lower quarter
7.1 cm
Median
11.5 cm
Upper quarter
13.8 cm
Largest
50 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Dunsop

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

Atlantic salmon European eel

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 →