Brown / sea trout · Salmo trutta

Brown / sea trout in the Tadburn Lake

Largest measured brown / sea trout: 33.4 cm

The largest brown / sea trout measured in Environment Agency surveys of the Tadburn Lake was 33.4 cm, recorded at Ashdown Way on 12 August 2005.

Across 378 measured brown / sea trout, the median measured length was 16.5 cm.

Surveyors recorded weights for 138 brown / sea trout. The median was 1.9 oz (0.053 kg) and the largest recorded weight was 16 oz (0.453 kg).

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

See brown / sea trout records across England →

Most recent observation18 September 2025Crampmoor Ford · 7 fish

Largest measured brown / sea trout: 33.4 cm
Median length: 16.5 cm
Fish measured: 378
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.

Length	Survey date	Survey location	Survey ID
33.4 cm	12 Aug 2005	Ashdown Way	86394
31.4 cm	20 Aug 2004	Ashdown Way	81547
30.2 cm	5 Apr 2012	Romsey bypass	131052
29.9 cm	3 Sept 2003	Ashdown Way	77495
29.6 cm	6 Sept 2002	Ashdown Way	55098
29.5 cm	20 Jul 2018	Ashdown Way	153071
29.4 cm	21 Sept 2021	Ashdown Way	160350
29.4 cm	5 Apr 2012	Romsey bypass	131052
29.2 cm	3 Sept 2003	Ashdown Way	77495
29 cm	5 Apr 2012	Romsey bypass	131052

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
Crampmoor Ford	3 Apr 2012	18 Sept 2025	9
Ashdown Way	6 Sept 2002	9 Sept 2025	14
u/s Straight Mile	2 Oct 2015	2 Oct 2015	1
Romsey bypass	5 Apr 2012	5 Apr 2012	1
d/s Crampmoor fish farm	20 Sept 2001	20 Sept 2001	1

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.

101

102

103

104

105

106

007

008

009

010

011

312

013

014

115

016

017

218

219

220

221

222

223

224

225

Fish measured by surveyors

Measured length distribution

See how the 378 measured fish were spread across different length ranges.

Smallest: 4.5 cm
Lower quarter: 10.2 cm
Median: 16.5 cm
Upper quarter: 21.4 cm
Largest: 33.4 cm

0–99 mm

100–199 mm

160

200–299 mm

122

300–399 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 138 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: 0.3 oz (0.008 kg)
Median: 1.9 oz (0.053 kg)
Upper quarter: 4.5 oz (0.1268 kg)
Heaviest: 16 oz (0.453 kg)

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

More fish in this river

Explore the Tadburn Lake

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

Bullhead Stone loach 3-spined stickleback European eel Topmouth gudgeon Brook lamprey

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 →