RiverFish

European eel · Anguilla anguilla

European eel in the River Blackwater

Largest measured european eel: 64 cm

The largest european eel measured in Environment Agency surveys of the River Blackwater was 64 cm, recorded at Landford on 13 September 2022.

Across 59 measured european eel, the median measured length was 35.5 cm.

Surveyors recorded weights for 3 european eel. The median was 4.3 oz (0.123 kg) and the largest recorded weight was 9 oz (0.254 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 Blackwater.

See european eel records across England →

Most recent observation16 September 2025Broadlands Fishery · 1 fish
Largest measured european eel
64 cm
Median length
35.5 cm
Fish measured
59
Survey locations
6

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
64 cm13 Sept 2022Landford161531
62 cm27 Sept 2021Landford160354
62 cm30 Apr 2013Landford135922
59.4 cm23 Sept 2019Landford155453
53.5 cm31 Jul 2012Lower Bridge Farm132550
50.6 cm20 Sept 2011Upper Whinwhistle128011
50.4 cm28 Jul 2011Lower Whinwhistle127236
50 cm20 Sept 2011Broadlands Fishery128015
50 cm20 Sept 2011Upper Whinwhistle128011
49.4 cm20 Sept 2011Upper Whinwhistle128011

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
Broadlands Fishery20 Sept 201116 Sept 20258
Landford4 Sept 200313 Sept 20228
Lower Bridge Farm31 Jul 201231 Jul 20121
Upper Whinwhistle20 Sept 201120 Sept 20111
Lower Whinwhistle28 Jul 201128 Jul 20111
Wade Bridge2 Sept 200430 Aug 20063

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

2003–2025

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 59 measured fish were spread across different length ranges.

Smallest
15.5 cm
Lower quarter
25.7 cm
Median
35.5 cm
Upper quarter
44 cm
Largest
64 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 3 european eel. This is a subset of the measured fish and may not represent the whole population.

Lightest
1.4 oz (0.041 kg)
Lower quarter
2.9 oz (0.082 kg)
Median
4.3 oz (0.123 kg)
Upper quarter
6.6 oz (0.1885 kg)
Heaviest
9 oz (0.254 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 Blackwater

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

Roach Bullhead Dace Brown / sea trout Stone loach Gudgeon

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 →