European eel · Anguilla anguilla

European eel in the Wraysbury River

Largest measured european eel: 80 cm

The largest european eel measured in Environment Agency surveys of the Wraysbury River was 80 cm, recorded at Harmondsworth Moor on 5 June 2014.

Across 41 measured european eel, the median measured length was 57 cm.

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

See european eel records across England →

Most recent observation15 May 2024Harmondsworth Moor · 5 fish

Largest measured european eel: 80 cm
Median length: 57 cm
Fish measured: 41
Survey locations: 2

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
80 cm	5 Jun 2014	Harmondsworth Moor	141014
78.7 cm	18 Jun 2015	Harmondsworth Moor	144973
76 cm	24 Jun 2008	Harmondsworth Moor	111536
72 cm	24 Aug 2005	Harmondsworth Moor	86814
71 cm	22 Oct 2019	Heathrow Wraysbury River Zone H	155852
71 cm	3 Sept 2003	Harmondsworth Moor	76923
70 cm	1 Jun 2023	Harmondsworth Moor	163493
70 cm	23 Jun 2010	Harmondsworth Moor	122462
70 cm	4 Aug 2004	Harmondsworth Moor	80906
67.4 cm	4 Aug 2004	Harmondsworth Moor	80906

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
Harmondsworth Moor	3 Sept 2003	15 May 2024	14
Heathrow Wraysbury River Zone H	22 Oct 2019	22 Oct 2019	1

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

2003–2024

Survey records by year

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

103

104

105

006

107

108

109

110

011

112

113

114

115

016

017

118

119

020

021

022

123

124

Fish measured by surveyors

Measured length distribution

See how the 41 measured fish were spread across different length ranges.

Smallest: 34 cm
Lower quarter: 49.5 cm
Median: 57 cm
Upper quarter: 67 cm
Largest: 80 cm

300–399 mm

400–499 mm

500–599 mm

600–699 mm

700–799 mm

800–899 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Wraysbury River

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

Chub Dace Gudgeon Minnow Perch 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 →