RiverFish

European eel · Anguilla anguilla

European eel in the Rigg Mill Beck

Largest measured european eel: 40 cm

The largest european eel measured in Environment Agency surveys of the Rigg Mill Beck was 40 cm, recorded at Downstream Cock Mill Manor on 4 October 2023.

Across 50 measured european eel, the median measured length was 21 cm.

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

See european eel records across England →

Most recent observation4 October 2023Downstream Cock Mill Manor · 3 fish
Largest measured european eel
40 cm
Median length
21 cm
Fish measured
50
Survey locations
2

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
40 cm4 Oct 2023Downstream Cock Mill Manor163522
35 cm9 Oct 2017Downstream Cock Mill Manor152014
35 cm9 Oct 2017Downstream Cock Mill Manor152014
34 cm20 Sept 2012Downstream Cock Mill Manor133778
31.5 cm20 Sept 2012Downstream Cock Mill Manor133778
31.2 cm30 Aug 2011Glen Esk Cottage128650
30 cm9 Oct 2017Downstream Cock Mill Manor152014
30 cm9 Oct 2017Downstream Cock Mill Manor152014
30 cm20 Sept 2012Downstream Cock Mill Manor133778
29.4 cm30 Aug 2011Glen Esk Cottage128650

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
Downstream Cock Mill Manor20 Sept 20124 Oct 20233
Glen Esk Cottage15 Jun 200530 Aug 20112

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

2005–2023

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 50 measured fish were spread across different length ranges.

Smallest
9 cm
Lower quarter
15 cm
Median
21 cm
Upper quarter
25.8 cm
Largest
40 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Rigg Mill Beck

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

Brown / sea trout

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 →