RiverFish

European eel · Anguilla anguilla

European eel in the Main River Parrett

Largest measured european eel: 83 cm

The largest european eel measured in Environment Agency surveys of the Main River Parrett was 83 cm, recorded at Knapp Br. on 7 August 1999.

Across 939 measured european eel, the median measured length was 34 cm.

Surveyors recorded weights for 99 european eel. The median was 8.9 oz (0.252 kg) and the largest recorded weight was 4 lb 6.5 oz (2 kg).

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

See european eel records across England →

Most recent observation2 September 2025Yeo Valley Creamery · 6 fish
Largest measured european eel
83 cm
Median length
34 cm
Fish measured
939
Survey locations
12

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
83 cm7 Aug 1999Knapp Br.79937
81 cm21 Aug 2000Knapp Br.79413
77 cm16 Aug 1999Knapp Br.79952
77 cm10 Aug 1999Knapp Br.79945
76.5 cm5 Aug 2001Knapp Br.79363
76 cm14 Aug 2000Knapp Br.79403
75 cm3 Aug 2004Knapp Br.80918
75 cm10 Aug 1999Knapp Br.79945
74.5 cm18 Aug 2011Parchey127771
74.5 cm17 Aug 2011Parchey127770

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
Yeo Valley Creamery28 Jul 20092 Sept 20259
Kings Sedgemoor Drain Downstream Gerylake13 Aug 20135 Aug 202516
Oath Lock12 Aug 200931 Jul 202521
Downstream Lecher Water20 Jul 20098 Jul 20253
Bow Barn Farm30 Sept 20093 Jul 20254
Westover Bridge23 Jul 200910 Aug 202313
Gawbridge17 Sept 20091 Aug 20234
Pibsbury23 Jul 200919 Aug 202113
Haselbury Mill10 Jul 20099 Aug 20173
Midelney11 Aug 20098 Aug 20133
Knapp Br.7 Aug 19998 Aug 201355
Parchey23 Jul 200918 Aug 20115

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

1999–2025

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 939 measured fish were spread across different length ranges.

Smallest
6.5 cm
Lower quarter
22 cm
Median
34 cm
Upper quarter
48.5 cm
Largest
83 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 99 european eel. This is a subset of the measured fish and may not represent the whole population.

Lightest
0.9 oz (0.025 kg)
Lower quarter
5.3 oz (0.15 kg)
Median
8.9 oz (0.252 kg)
Upper quarter
1 lb 0.1 oz (0.4555 kg)
Heaviest
4 lb 6.5 oz (2 kg)

These are direct individual weights recorded by Environment Agency surveyors. Combined bulk weights are not included.

More fish in this river

Explore the Main River Parrett

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

Roach Perch Ruffe Gudgeon 3-spined stickleback Pike

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 →