European eel · Anguilla anguilla

European eel in the Greylake Stream

Largest measured european eel: 55 cm

The largest european eel measured in Environment Agency surveys of the Greylake Stream was 55 cm, recorded at Outgrounds on 21 July 2025.

Across 54 measured european eel, the median measured length was 33.6 cm.

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

See european eel records across England →

Most recent observation29 June 2026Outgrounds · 2 fish

Largest measured european eel: 55 cm
Median length: 33.6 cm
Fish measured: 54
Survey locations: 3

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
55 cm	21 Jul 2025	Outgrounds	178933
54.9 cm	26 Aug 1997	Outgrounds	103631
54.5 cm	27 Jul 2000	Outgrounds	103474
50.5 cm	27 Jul 2000	Outgrounds	103474
49.5 cm	20 Aug 2002	Outgrounds	72602
48.5 cm	27 Jul 2000	Outgrounds	103474
48 cm	3 Jul 2019	Outgrounds	155363
47.3 cm	27 Jul 2000	Outgrounds	103474
44.7 cm	27 Jul 2000	Outgrounds	103474
44.5 cm	28 Jul 2000	Longcarne	103475

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
Outgrounds	15 Jul 1980	29 Jun 2026	22
St. Leonards	18 Jul 1985	28 Jul 2011	8
Longcarne	14 Jul 1980	28 Jul 2000	7

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

1980–2026

Survey records by year

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

280

081

082

083

084

385

086

087

388

189

190

391

092

093

394

095

096

397

098

099

300

001

102

103

104

005

206

007

008

009

110

111

012

113

014

115

016

117

018

119

020

021

022

123

124

125

126

Fish measured by surveyors

Measured length distribution

See how the 54 measured fish were spread across different length ranges.

Smallest: 9.1 cm
Lower quarter: 28.3 cm
Median: 33.7 cm
Upper quarter: 41.2 cm
Largest: 55 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 Greylake Stream

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

Brown / sea trout Atlantic salmon Bullhead

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 →