European eel · Anguilla anguilla

European eel in the River Uck

Largest measured european eel: 63 cm

The largest european eel measured in Environment Agency surveys of the River Uck was 63 cm, recorded at Uckfield on 1 August 2024.

Across 131 measured european eel, the median measured length was 38 cm.

Surveyors recorded weights for 81 european eel. The median was 3.4 oz (0.096 kg) and the largest recorded weight was 1 lb 1 oz (0.483 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 Uck.

See european eel records across England →

Most recent observation14 August 2025Uckfield · 3 fish

Largest measured european eel: 63 cm
Median length: 38 cm
Fish measured: 131
Survey locations: 8

Individual EA measurements

Largest measured european eel

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
63 cm	1 Aug 2024	Uckfield	166436
62.5 cm	21 Sept 2023	Uckfield	163803
62 cm	1 Aug 2024	Uckfield	166436
61 cm	21 Sept 2017	Uckfield	151699
60.1 cm	1 Aug 2024	Uckfield	166436
60 cm	21 Sept 2023	Uckfield	163803
59 cm	2 Sept 2003	Owlsbury Farm	76920
58 cm	7 Aug 2025	Stroodland Wood	177812
56.5 cm	2 Sept 2003	Owlsbury Farm	76920
56 cm	21 Sept 2023	Uckfield	163803

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where european eel were found

Each point marks a survey location with at least one european eel 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 european eel
Uckfield	20 Aug 2015	14 Aug 2025	8
Stroodland Wood	7 Aug 2025	7 Aug 2025	1
Isfield Weir	23 Aug 2002	7 Aug 2025	8
Upstream Isfield Gate	10 Oct 2019	10 Oct 2019	1
Bradfords Bridge	12 Aug 2011	12 Aug 2011	1
Owlsbury Farm	2 Sept 2003	5 Sept 2007	5
Little Horsted	17 Sept 2003	17 Sept 2003	1
Great Streele	20 Aug 2003	20 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.

2002–2025

Survey records by year

Each bar shows how many survey visits recorded european eel that year.

102

403

204

205

206

207

008

009

010

111

012

013

114

115

016

117

118

219

020

121

022

123

124

325

Fish measured by surveyors

Measured length distribution

See how the 131 measured fish were spread across different length ranges.

Smallest: 5 cm
Lower quarter: 28 cm
Median: 38 cm
Upper quarter: 47 cm
Largest: 63 cm

0–99 mm

100–199 mm

200–299 mm

300–399 mm

400–499 mm

500–599 mm

600–699 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 81 european eel. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0.1 oz (0.002 kg)
Lower quarter: 1.9 oz (0.053 kg)
Median: 3.4 oz (0.096 kg)
Upper quarter: 6 oz (0.171 kg)
Heaviest: 1 lb 1 oz (0.483 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 Uck

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

Stone loach Minnow Roach Bullhead Gudgeon Chub

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 →