Brown / sea trout · Salmo trutta

Brown / sea trout in the River Lee

Largest measured brown / sea trout: 52.8 cm

The largest brown / sea trout measured in Environment Agency surveys of the River Lee was 52.8 cm, recorded at Waterdale on 1 August 2019.

Across 81 measured brown / sea trout, the median measured length was 26 cm.

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

See brown / sea trout records across England →

Most recent observation23 July 2026Amwell Loop · 5 fish

Largest measured brown / sea trout: 52.8 cm
Median length: 26 cm
Fish measured: 81
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.

Length	Survey date	Survey location	Survey ID
52.8 cm	1 Aug 2019	Waterdale	155085
51.8 cm	15 Jul 2025	Amwell Loop	177652
48.3 cm	27 Jul 2022	Amwell Loop	161669
47.1 cm	9 Aug 2006	Waterdale	100583
46.6 cm	5 Jul 2016	Amwell Loop	148369
46.1 cm	6 Jul 2023	Amwell Loop	162505
45.5 cm	27 Jul 2022	Amwell Loop	161669
45.5 cm	27 Jul 2022	Amwell Loop	161669
44.6 cm	5 Jul 2016	Amwell Loop	148369
44.3 cm	3 Jul 2015	Amwell Loop	145261

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
Amwell Loop	19 Sept 2003	23 Jul 2026	11
Waterdale	16 Sept 2004	31 Jul 2025	12
Hartham Leisure centre	24 Jun 2019	24 Jun 2019	1
Fishers Green	14 Nov 2003	5 Jul 2011	6
Woolmers Park	9 Aug 2008	9 Aug 2008	1
Hertford County Hall AS	28 Nov 2003	28 Nov 2003	1
Hartham Common	22 Aug 2003	22 Aug 2003	1

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

2003–2026

Survey records by year

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

403

204

105

206

207

308

209

110

111

012

113

014

115

216

117

018

319

020

021

222

123

124

225

126

Fish measured by surveyors

Measured length distribution

See how the 81 measured fish were spread across different length ranges.

Smallest: 7.5 cm
Lower quarter: 22 cm
Median: 26 cm
Upper quarter: 34.3 cm
Largest: 52.8 cm

0–99 mm

100–199 mm

200–299 mm

300–399 mm

400–499 mm

500–599 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Lee

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

Roach Perch Gudgeon Minnow Chub Pike

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 →