RiverFish

Brown / sea trout · Salmo trutta

Brown / sea trout in the Delf Burn NT Habitat

Largest measured brown / sea trout: 28.2 cm

The largest brown / sea trout measured in Environment Agency surveys of the Delf Burn NT Habitat was 28.2 cm, recorded at Delf Burn NT Enclosure Site 3 on 6 September 2024.

Across 114 measured brown / sea trout, the median measured length was 14.2 cm.

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

See brown / sea trout records across England →

Most recent observation12 September 2025Delf Burn NT Enclosure Site 6 · 2 fish
Largest measured brown / sea trout
28.2 cm
Median length
14.2 cm
Fish measured
114
Survey locations
6

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
28.2 cm6 Sept 2024Delf Burn NT Enclosure Site 3169012
27.5 cm12 Sept 2025Delf Burn NT Enclosure Site 3179363
26.4 cm6 Sept 2024Delf Burn NT Enclosure Site 2169011
24.7 cm12 Sept 2025Delf Burn NT Enclosure Site 4179364
24.2 cm12 Sept 2025Delf Burn NT Enclosure Site 1179360
22.4 cm12 Sept 2025Delf Burn NT Enclosure Site 3179363
22.4 cm12 Sept 2025Delf Burn NT Enclosure Site 3179363
22.1 cm6 Sept 2024Delf Burn NT Enclosure Site 1169010
21.8 cm12 Sept 2025Delf Burn NT Enclosure Site 4179364
21.2 cm12 Sept 2025Delf Burn NT Enclosure Site 1179360

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
Delf Burn NT Enclosure Site 66 Sept 202412 Sept 20252
Delf Burn NT Enclosure Site 56 Sept 202412 Sept 20252
Delf Burn NT Enclosure Site 46 Sept 202412 Sept 20252
Delf Burn NT Enclosure Site 36 Sept 202412 Sept 20252
Delf Burn NT Enclosure Site 26 Sept 202412 Sept 20252
Delf Burn NT Enclosure Site 16 Sept 202412 Sept 20252

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

2024–2025

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 114 measured fish were spread across different length ranges.

Smallest
6.7 cm
Lower quarter
12 cm
Median
14.2 cm
Upper quarter
17.8 cm
Largest
28.2 cm

Lengths are direct survey measurements rather than anglers’ catches.

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 →