Brown / sea trout · Salmo trutta

Brown / sea trout in the Sea Trout Survey, Doniford Stream

Largest measured brown / sea trout: 52 cm

The largest brown / sea trout measured in Environment Agency surveys of the Sea Trout Survey, Doniford Stream was 52 cm, recorded at High Bridge, Williton on 18 October 2005.

Across 488 measured brown / sea trout, the median measured length was 19 cm.

Surveyors recorded weights for 244 brown / sea trout. The median was 3.5 oz (0.098 kg) and the largest recorded weight was 3 lb 1.1 oz (1.39 kg).

RiverFish uses Environment Agency survey measurements rather than rod-and-line angling records. These figures show fish measured during EA surveys of the Sea Trout Survey, Doniford Stream.

See brown / sea trout records across England →

Most recent observation18 September 2019Adjacent to Sewage Treatment Works · 68 fish

Largest measured brown / sea trout: 52 cm
Median length: 19 cm
Fish measured: 488
Survey locations: 4

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.

Length	Survey date	Survey location	Survey ID
52 cm	18 Oct 2005	High Bridge, Williton	87053
51.5 cm	18 Oct 2005	Spill End	87050
48.6 cm	13 Oct 2006	High Bridge, Williton	101836
48.5 cm	1 Sept 2011	Adjacent to Sewage Treatment Works	135876
47.3 cm	13 Oct 2006	High Bridge, Williton	101836
46.3 cm	18 Sept 2019	Adjacent to Sewage Treatment Works	155395
42.1 cm	18 Oct 2005	Swill Bridge	87029
42 cm	18 Oct 2005	High Bridge, Williton	87053
40.3 cm	18 Oct 2005	Spill End	87050
40 cm	18 Oct 2005	Spill End	87050

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 surveyed	First recorded	Last recorded	Visits finding brown / sea trout
Adjacent to Sewage Treatment Works	13 Oct 2006	18 Sept 2019	3
Swill Bridge	18 Oct 2005	13 Oct 2006	2
Spill End	18 Oct 2005	13 Oct 2006	2
High Bridge, Williton	18 Oct 2005	13 Oct 2006	2

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

2005–2019

Survey records by year

Each bar shows how many survey visits recorded brown / sea trout that year.

305

406

007

008

009

010

111

012

013

014

015

016

017

018

119

Fish measured by surveyors

Measured length distribution

See how the 488 measured fish were spread across different length ranges.

Smallest: 7.4 cm
Lower quarter: 17 cm
Median: 19 cm
Upper quarter: 22.8 cm
Largest: 52 cm

0–99 mm

100–199 mm

293

200–299 mm

130

300–399 mm

400–499 mm

500–599 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 244 brown / sea trout. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0.3 oz (0.008 kg)
Lower quarter: 2.4 oz (0.0678 kg)
Median: 3.5 oz (0.098 kg)
Upper quarter: 7 oz (0.1998 kg)
Heaviest: 3 lb 1.1 oz (1.39 kg)

These are direct individual weights recorded by Environment Agency surveyors. Combined bulk weights are not included.

More fish in this river

Explore the Sea Trout Survey, Doniford Stream

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

European eel Bullhead Minnow

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 →