RiverFish

Brown / sea trout · Salmo trutta

Brown / sea trout in the Dalby/Thornton Beck

Largest measured brown / sea trout: 32.4 cm

The largest brown / sea trout measured in Environment Agency surveys of the Dalby/Thornton Beck was 32.4 cm, recorded at Thornton Beck Ellerburn on 26 June 2006.

Across 915 measured brown / sea trout, the median measured length was 10.2 cm.

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

See brown / sea trout records across England →

Most recent observation18 September 2024Dalby Beck, Low Staindale Car Park. DERBT27. · 45 fish
Largest measured brown / sea trout
32.4 cm
Median length
10.2 cm
Fish measured
915
Survey locations
5

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
32.4 cm26 Jun 2006Thornton Beck Ellerburn102359
30.5 cm26 Jun 2006Thornton Beck Ellerburn102359
28.6 cm27 Jun 2006Thornton Beck at Top Bridge Fm102360
28.2 cm27 Jun 2006Thornton Beck at Top Bridge Fm102360
26.6 cm26 Jun 2006Thornton Beck Ellerburn102359
26 cm14 Sept 2022Thornton Beck Ellerburn161414
24.7 cm27 Jun 2006Thornton Beck at Top Bridge Fm102360
23.6 cm26 Jun 2006Thornton Beck Ellerburn102359
23.5 cm13 Oct 2021Dalby Beck, DS Dalby village160426
23 cm18 Sept 2024Dalby Beck, Low Staindale Car Park. DERBT27.167119

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
Dalby Beck, Low Staindale Car Park. DERBT27.25 Sept 200118 Sept 202418
Thornton Beck Ellerburn11 Sept 199714 Sept 20224
Dalby Beck, DS Dalby village13 Oct 202113 Oct 20211
Thornton Beck at Top Bridge Fm11 Sept 199729 Aug 20123
Dalby beck Nr Dovedale Griff15 Sept 200515 Sept 20051

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

1997–2024

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 915 measured fish were spread across different length ranges.

Smallest
4.2 cm
Lower quarter
6.7 cm
Median
10.2 cm
Upper quarter
12.5 cm
Largest
32.4 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Dalby/Thornton Beck

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

Bullhead 3-spined stickleback 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 →