RiverFish

European eel · Anguilla anguilla

European eel in the River Worm Gill

Largest measured european eel: 47.5 cm

The largest european eel measured in Environment Agency surveys of the River Worm Gill was 47.5 cm, recorded at 1859.00 PTC River Calder, Worm Gill on 21 September 2009.

Across 47 measured european eel, the median measured length was 17 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 Worm Gill.

See european eel records across England →

Most recent observation20 August 20251859.00 PTC River Calder, Worm Gill · 2 fish
Largest measured european eel
47.5 cm
Median length
17 cm
Fish measured
47
Survey locations
8

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
47.5 cm21 Sept 20091859.00 PTC River Calder, Worm Gill120717
45 cm5 Sept 20241856.70 DS Ford, DS Existing site CPUE166830
33 cm6 Sept 20231856.50 DS ford, Worm Gill163445
32.5 cm21 Sept 20091859.00 PTC River Calder, Worm Gill120717
32 cm27 Jul 20211856.50 DS ford, Worm Gill160353
27.5 cm11 Oct 2007Habitat B108277
26 cm27 Jul 20211856.50 DS ford, Worm Gill160353
26 cm30 Aug 20181859.00 PTC River Calder, Worm Gill153244
25 cm17 Aug 20221856.50 DS ford, Worm Gill161540
25 cm27 Jul 20211859.00 PTC River Calder, Worm Gill160357

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
1859.00 PTC River Calder, Worm Gill11 Oct 199420 Aug 202510
1856.50 DS ford, Worm Gill18 Aug 201518 Aug 20257
1856.70 DS Ford, DS Existing site CPUE6 Sept 20235 Sept 20242
1859.10 PTC River Calder CPUE13 Aug 202413 Aug 20241
Habitat B11 Oct 200711 Oct 20071
1856.00 at NY 097 103, Worm Gill11 Oct 19944 Sept 19982
1855.00 DS NWW Intake, Worm Gill24 Sept 199724 Sept 19971
1854.00 US NWW Intake, Worm Gill11 Oct 199411 Oct 19941

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

1994–2025

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 47 measured fish were spread across different length ranges.

Smallest
10 cm
Lower quarter
15 cm
Median
17 cm
Upper quarter
24.3 cm
Largest
47.5 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Worm Gill

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

Brown / sea trout Atlantic salmon

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 →