RiverFish

European eel · Anguilla anguilla

European eel in the River Twiss

Largest measured european eel: 53 cm

The largest european eel measured in Environment Agency surveys of the River Twiss was 53 cm, recorded at Waterfalls car park on 9 August 2023.

Across 10 measured european eel, the median measured length was 40 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 Twiss.

See european eel records across England →

Most recent observation7 August 2025Waterfalls car park · 3 fish
Largest measured european eel
53 cm
Median length
40 cm
Fish measured
10
Survey locations
1

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
53 cm9 Aug 2023Waterfalls car park162916
50 cm4 Sept 2007Waterfalls car park106612
47 cm5 Jul 2019Waterfalls car park154780
44.9 cm7 Aug 2025Waterfalls car park179974
42 cm5 Jul 2019Waterfalls car park154780
38 cm5 Jul 2019Waterfalls car park154780
37 cm11 Sept 1991Waterfalls car park115136
33.5 cm7 Aug 2025Waterfalls car park179974
27 cm7 Aug 2025Waterfalls car park179974
20 cm4 Sept 2007Waterfalls car park106612

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
Waterfalls car park11 Sept 19917 Aug 20255

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

1991–2025

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 10 measured fish were spread across different length ranges.

Smallest
20 cm
Lower quarter
34.4 cm
Median
40 cm
Upper quarter
46.5 cm
Largest
53 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Twiss

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 →