RiverFish

European eel · Anguilla anguilla

European eel in the River Calder

Largest measured european eel: 60 cm

The largest european eel measured in Environment Agency surveys of the River Calder was 60 cm, recorded at Chantry Bridge on 24 June 2024.

Across 5 measured european eel, the median measured length was 50 cm.

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

See european eel records across England →

Most recent observation23 July 2024Dewsbury (end of flood relief channel) · 2 fish
Largest measured european eel
60 cm
Median length
50 cm
Fish measured
5
Survey locations
4

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
60 cm24 Jun 2024Chantry Bridge165359
55.7 cm4 Jul 2012Chantry Bridge132269
50 cm23 Jul 2024Dewsbury (end of flood relief channel)165840
48.5 cm6 Jul 2010Brighouse Industrial Estate122858
20 cm23 Jul 2024Dewsbury (end of flood relief channel)165840

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
Dewsbury (end of flood relief channel)23 Jul 202423 Jul 20241
Chantry Bridge4 Jul 201224 Jun 20242
Brighouse Industrial Estate6 Jul 20106 Jul 20101
Methley28 Jul 200628 Jul 20061

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

2006–2024

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 5 measured fish were spread across different length ranges.

Smallest
20 cm
Lower quarter
48.5 cm
Median
50 cm
Upper quarter
55.7 cm
Largest
60 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Calder

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

Brown / sea trout Stone loach Bullhead Gudgeon Chub Roach

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 →