European eel · Anguilla anguilla

European eel in the River Cockhaise

Largest measured european eel: 59 cm

The largest european eel measured in Environment Agency surveys of the River Cockhaise was 59 cm, recorded at Horsted Keynes STW on 26 June 2001.

Across 82 measured european eel, the median measured length was 33 cm.

Surveyors recorded weights for 51 european eel. The median was 1.4 oz (0.041 kg) and the largest recorded weight was 15.5 oz (0.44 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 Cockhaise.

See european eel records across England →

Most recent observation31 July 2024Wildboar Bridge · 4 fish

Largest measured european eel: 59 cm
Median length: 33 cm
Fish measured: 82
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
59 cm	26 Jun 2001	Horsted Keynes STW	51875
58.5 cm	4 Sept 2003	Horsted Keynes STW	76921
57 cm	6 Aug 2013	Wildboar Bridge	137713
57 cm	6 Aug 2013	Wildboar Bridge	137713
55 cm	6 Aug 2015	Wildboar Bridge	145962
55 cm	6 Aug 2015	Wildboar Bridge	145962
54 cm	4 Sept 2003	Horsted Keynes STW	76921
54 cm	26 Jun 2001	Wildboar Bridge	51877
54 cm	26 Jun 2001	Wildboar Bridge	51877
54 cm	26 Jun 2001	Wildboar Bridge	51877

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
Wildboar Bridge	26 Jun 2001	31 Jul 2024	9
Holywell Pumping Station	2 May 2013	2 May 2013	1
Horsted Keynes STW	26 Jun 2001	4 Sept 2003	2

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

2001–2024

Survey records by year

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

201

002

203

004

005

006

007

008

109

010

111

012

213

014

115

016

117

018

019

020

021

022

123

124

Fish measured by surveyors

Measured length distribution

See how the 82 measured fish were spread across different length ranges.

Smallest: 12 cm
Lower quarter: 25.5 cm
Median: 33 cm
Upper quarter: 45.5 cm
Largest: 59 cm

100–199 mm

200–299 mm

300–399 mm

400–499 mm

500–599 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 51 european eel. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0.1 oz (0.004 kg)
Lower quarter: 0.8 oz (0.022 kg)
Median: 1.4 oz (0.041 kg)
Upper quarter: 4.7 oz (0.1345 kg)
Heaviest: 15.5 oz (0.44 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 Cockhaise

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

Brown / sea trout Perch Bullhead Minnow 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 →