RiverFish

Brown / sea trout · Salmo trutta

Brown / sea trout in the River Blackwater

Largest measured brown / sea trout: 37.5 cm

The largest brown / sea trout measured in Environment Agency surveys of the River Blackwater was 37.5 cm, recorded at Broadlands Fishery on 15 September 2022.

Across 531 measured brown / sea trout, the median measured length was 13.3 cm.

Surveyors recorded weights for 313 brown / sea trout. The median was 1 oz (0.029 kg) and the largest recorded weight was 9.3 oz (0.265 kg).

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

See brown / sea trout records across England →

Most recent observation18 September 2025Landford · 14 fish
Largest measured brown / sea trout
37.5 cm
Median length
13.3 cm
Fish measured
531
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
37.5 cm15 Sept 2022Broadlands Fishery161536
36.7 cm19 Sept 2024Broadlands Fishery167854
36.5 cm15 Sept 2022Broadlands Fishery161536
36.2 cm4 Sept 2002Landford55091
34.3 cm4 Sept 2002Landford55091
33.7 cm20 Sept 2001Landford56311
33.3 cm31 Jul 2012Lower Bridge Farm132550
29.4 cm28 Sept 2021Broadlands Fishery160408
29.2 cm10 Aug 2004Landford81351
29 cm4 Sept 2002Landford55091

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
Landford20 Sept 200118 Sept 202515
Broadlands Fishery20 Sept 201119 Sept 20248
Lower Bridge Farm31 Jul 201231 Jul 20121
Upper Whinwhistle20 Sept 201120 Sept 20111
Hammonds Farm6 Sept 20046 Sept 20041

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

2001–2025

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 531 measured fish were spread across different length ranges.

Smallest
2.9 cm
Lower quarter
7.5 cm
Median
13.3 cm
Upper quarter
16.3 cm
Largest
37.5 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 313 brown / sea trout. This is a subset of the measured fish and may not represent the whole population.

Lightest
0 oz (0.001 kg)
Lower quarter
0.2 oz (0.005 kg)
Median
1 oz (0.029 kg)
Upper quarter
1.8 oz (0.052 kg)
Heaviest
9.3 oz (0.265 kg)

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

More fish in this river

Explore the River Blackwater

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

Roach Bullhead European eel Dace Stone loach Gudgeon

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 →