RiverFish

European eel · Anguilla anguilla

European eel in the River Bollin

Largest measured european eel: 66 cm

The largest european eel measured in Environment Agency surveys of the River Bollin was 66 cm, recorded at Bobo12 on 14 September 2022.

Across 104 measured european eel, the median measured length was 27.8 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 Bollin.

See european eel records across England →

Most recent observation9 September 2025Bobo07 · 9 fish
Largest measured european eel
66 cm
Median length
27.8 cm
Fish measured
104
Survey locations
14

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
66 cm14 Sept 2022Bobo12161993
61.8 cm17 Jul 2025Bobo10179832
61.5 cm13 Aug 2025Bobo31180032
60.5 cm17 Jul 2025Bobo10179832
60.5 cm17 Jul 2025Bobo10179832
59.5 cm23 Jul 2025Bobo20179836
55.5 cm22 Jul 2025Bobo12179833
55 cm9 Sept 2025Bobo07180116
54.5 cm23 Jul 2025Bobo19179835
51.5 cm9 Sept 2025Bobo07180116

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
Bobo079 Sept 20259 Sept 20251
Bobo059 Sept 20259 Sept 20251
Bobo3117 Aug 201113 Aug 20254
Bobo2027 Jul 200623 Jul 20252
Bobo1923 Jul 202523 Jul 20251
Bobo1218 Aug 201122 Jul 20254
Bobo1019 Aug 200317 Jul 20252
Mc0520 Sept 202220 Sept 20221
Mc0420 Sept 202220 Sept 20221
Bobo133 Aug 201010 Jun 20132
Bobo257 Aug 200626 Jun 20082
Bobo3018 Aug 200323 Jun 20086
Bobo1526 Jul 20024 Aug 20053
Mc0326 Jul 200226 Jul 20021

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

2002–2025

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 104 measured fish were spread across different length ranges.

Smallest
10 cm
Lower quarter
21.8 cm
Median
27.8 cm
Upper quarter
40 cm
Largest
66 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Bollin

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

Stone loach 3-spined stickleback Bullhead Gudgeon Brown / sea trout Chub

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 →