RiverFish

Brown / sea trout · Salmo trutta

Brown / sea trout in the River Gade

Largest measured brown / sea trout: 52.5 cm

The largest brown / sea trout measured in Environment Agency surveys of the River Gade was 52.5 cm, recorded at Great Gaddesden on 21 May 2004.

Across 202 measured brown / sea trout, the median measured length was 8.9 cm.

Surveyors recorded weights for 5 brown / sea trout. The median was 11.6 oz (0.328 kg) and the largest recorded weight was 13.9 oz (0.393 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 Gade.

See brown / sea trout records across England →

Most recent observation29 September 2025Gadebridge Park post-enhancement · 14 fish
Largest measured brown / sea trout
52.5 cm
Median length
8.9 cm
Fish measured
202
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
52.5 cm21 May 2004Great Gaddesden81232
48.5 cm26 May 2004Gadebridge Park81221
47.4 cm21 May 2004Great Gaddesden81232
45.5 cm28 May 2021Upstream Gadebridge Lane159866
41.3 cm21 May 2004Great Gaddesden81232
35.6 cm21 May 2004Great Gaddesden81232
34.4 cm6 Jun 2022Gadebridge Park161134
33.3 cm28 Feb 2002Piccotts End79486
31.7 cm28 Feb 2002Piccotts End79486
31 cm28 Feb 2002Piccotts End79486

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
Gadebridge Park post-enhancement29 Sept 202529 Sept 20251
Cura Fisheries23 Jul 200425 Apr 20247
Gadebridge Park26 May 20046 Jun 20224
Upstream Gadebridge Lane28 May 202128 May 20211
Great Gaddesden21 May 200421 May 20041
Piccotts End28 Feb 200228 Feb 20021

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

2002–2025

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 202 measured fish were spread across different length ranges.

Smallest
4.4 cm
Lower quarter
5.2 cm
Median
8.9 cm
Upper quarter
14.7 cm
Largest
52.5 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 5 brown / sea trout. This is a subset of the measured fish and may not represent the whole population.

Lightest
10.5 oz (0.299 kg)
Lower quarter
11.4 oz (0.324 kg)
Median
11.6 oz (0.328 kg)
Upper quarter
11.8 oz (0.334 kg)
Heaviest
13.9 oz (0.393 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 Gade

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

Bullhead Minnow 3-spined stickleback Stone loach Roach Perch

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 →