RiverFish

Brown / sea trout · Salmo trutta

Brown / sea trout in the Gatwick Stream

Largest measured brown / sea trout: 37.6 cm

The largest brown / sea trout measured in Environment Agency surveys of the Gatwick Stream was 37.6 cm, recorded at Grattons Park by St Marys Drive on 4 May 2006.

Across 300 measured brown / sea trout, the median measured length was 12.2 cm.

Surveyors recorded weights for 23 brown / sea trout. The median was 7 oz (0.1984 kg) and the largest recorded weight was 1 lb 8 oz (0.6804 kg).

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

See brown / sea trout records across England →

Most recent observation4 May 2023Grattons Park by St Marys Drive · 11 fish
Largest measured brown / sea trout
37.6 cm
Median length
12.2 cm
Fish measured
300
Survey locations
7

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
37.6 cm4 May 2006Grattons Park by St Marys Drive116871
36.7 cm21 Nov 1989Forge Farm, Tinsley Green103210
33.3 cm16 Jul 2013Grattons Park by St Marys Drive137276
33.1 cm4 May 2006Grattons Park by St Marys Drive116871
32.6 cm4 May 2006Grattons Park by St Marys Drive116871
32.4 cm4 May 2006Grattons Park by St Marys Drive116871
32 cm18 Nov 2021Oaken Wood d/s Foot Bridge160780
31.2 cm12 Oct 2016Woodland u/s Retention Dam149742
30.9 cm12 Oct 2016Woodland u/s Retention Dam149742
30.8 cm4 May 2006Grattons Park by St Marys Drive116871

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
Grattons Park by St Marys Drive4 May 20064 May 20234
Worth Wood u/s Pylon12 Oct 201618 Nov 20212
Oaken Wood d/s Foot Bridge13 Oct 201618 Nov 20212
Balcombe Rd ds Bridge13 Oct 201612 Oct 20213
Woodland u/s Retention Dam12 Oct 201612 Oct 20161
Upstream of M2311 May 200611 May 20061
Forge Farm, Tinsley Green17 Jul 19865 May 19933

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

1986–2023

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 300 measured fish were spread across different length ranges.

Smallest
4.9 cm
Lower quarter
8 cm
Median
12.3 cm
Upper quarter
21.5 cm
Largest
37.6 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 23 brown / sea trout. This is a subset of the measured fish and may not represent the whole population.

Lightest
0.5 oz (0.0142 kg)
Lower quarter
3 oz (0.085 kg)
Median
7 oz (0.1984 kg)
Upper quarter
10.5 oz (0.2976 kg)
Heaviest
1 lb 8 oz (0.6804 kg)

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

More fish in this river

Explore the Gatwick Stream

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

Bullhead Perch Chub Dace Gudgeon Roach

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 →