RiverFish

European eel · Anguilla anguilla

European eel in the River Wallers Haven

Largest measured european eel: 95 cm

The largest european eel measured in Environment Agency surveys of the River Wallers Haven was 95 cm, recorded at Downstream Boreham Bridge on 24 June 2010.

Across 63 measured european eel, the median measured length was 43.5 cm.

Surveyors recorded weights for 24 european eel. The median was 3.5 oz (0.098 kg) and the largest recorded weight was 1 lb 14.8 oz (0.872 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 Wallers Haven.

See european eel records across England →

Most recent observation14 October 2025Horse Bridge · 2 fish
Largest measured european eel
95 cm
Median length
43.5 cm
Fish measured
63
Survey locations
9

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.

LengthSurvey dateSurvey locationSurvey ID
95 cm24 Jun 2010Downstream Boreham Bridge122999
92 cm24 Jun 2010Downstream Boreham Bridge122999
76.5 cm20 May 1993Downstream Boreham Bridge88221
72.6 cm29 Aug 2003Upstream Boreham Bridge76999
65 cm24 Jun 2010Downstream Boreham Bridge122999
64 cm23 Oct 2009Horse Bridge120621
62 cm7 Jul 2011Downstream Boreham Bridge126952
61 cm7 Jul 2011Downstream Boreham Bridge126952
60 cm29 Jun 2010A259 Barnhorn Bridge123012
60 cm24 Jun 2010Downstream Boreham Bridge122999

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 surveyedFirst recordedLast recordedVisits finding european eel
Horse Bridge23 Oct 200914 Oct 20252
Pebsham Bridge17 Sept 201817 Sept 20181
Upstream Boreham Bridge29 Aug 200319 Aug 20166
Downstream Tilley Bridge29 Jun 20109 Aug 20162
Middle Bridge9 Sept 20115 Jul 20162
Ash Bourne Stream21 Jan 200018 Apr 20133
Downstream Boreham Bridge20 May 19937 Jul 20113
A259 Barnhorn Bridge29 Jun 201029 Jun 20101
Nunningham Stream21 Jan 200021 Jan 20001

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

1993–2025

Survey records by year

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

Fish measured by surveyors

Measured length distribution

See how the 63 measured fish were spread across different length ranges.

Smallest
12.5 cm
Lower quarter
30 cm
Median
43.5 cm
Upper quarter
55 cm
Largest
95 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 24 european eel. This is a subset of the measured fish and may not represent the whole population.

Lightest
0.2 oz (0.006 kg)
Lower quarter
1.2 oz (0.0352 kg)
Median
3.5 oz (0.098 kg)
Upper quarter
7.6 oz (0.2145 kg)
Heaviest
1 lb 14.8 oz (0.872 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 Wallers Haven

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

Perch Roach Pike Common bream Gudgeon 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 →