RiverFish

European eel · Anguilla anguilla

European eel in the Cod Beck

Largest measured european eel: 56 cm

The largest european eel measured in Environment Agency surveys of the Cod Beck was 56 cm, recorded at Cod Beck at Dalton on 8 July 2016.

Across 11 measured european eel, the median measured length was 36 cm.

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

See european eel records across England →

Most recent observation15 September 2022Thirkleby Beck at Thirkleby · 1 fish
Largest measured european eel
56 cm
Median length
36 cm
Fish measured
11
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
56 cm8 Jul 2016Cod Beck at Dalton148423
45 cm24 Aug 2016Thirkleby Beck at Thirkleby149118
45 cm8 Jul 2016Cod Beck at Dalton148423
40 cm8 Jul 2016Cod Beck at Dalton148423
38.5 cm10 Jun 2010Thirkleby Beck at Thirkleby122951
36 cm8 Jul 2016Cod Beck at Dalton148423
31 cm8 Jul 2016Cod Beck at Dalton148423
30 cm8 Jul 2016Cod Beck at Dalton148423
25 cm8 Jul 2016Cod Beck at Dalton148423
24 cm15 Sept 2022Thirkleby Beck at Thirkleby161430

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
Thirkleby Beck at Thirkleby10 Jun 201015 Sept 20223
Cod Beck at Dalton25 Jul 20058 Jul 20162
Dalton Beck at Dalton10 Jun 201010 Jun 20101
Willow Beck at Dalton31 May 200531 May 20051
Isle Beck at Bruce House31 May 200531 May 20051
Cod Beck nr Sowerby (Worlds end Bridge)31 May 200531 May 20051

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

2005–2022

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 11 measured fish were spread across different length ranges.

Smallest
20 cm
Lower quarter
27.5 cm
Median
36 cm
Upper quarter
42.5 cm
Largest
56 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Cod Beck

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

Brown / sea trout Bullhead Stone loach Minnow Grayling Dace

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 →