RiverFish

European eel · Anguilla anguilla

European eel in the River Ash (Thames)

Largest measured european eel: 75.2 cm

The largest european eel measured in Environment Agency surveys of the River Ash (Thames) was 75.2 cm, recorded at Gaston Bridge on 23 August 2011.

Across 270 measured european eel, the median measured length was 42 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 Ash (Thames).

See european eel records across England →

Most recent observation5 September 2023Gaston Bridge · 8 fish
Largest measured european eel
75.2 cm
Median length
42 cm
Fish measured
270
Survey locations
7

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
75.2 cm23 Aug 2011Gaston Bridge127566
71.2 cm24 Aug 2017Gaston Bridge151512
70.9 cm24 Aug 2017Gaston Bridge151512
69.1 cm24 Aug 2017Gaston Bridge151512
66.3 cm24 Aug 2017Gaston Bridge151512
64.5 cm23 Aug 2011Gaston Bridge127566
63.1 cm24 Aug 2017Gaston Bridge151512
63 cm13 Oct 2005Gaston Bridge86943
62.1 cm24 Aug 2017Gaston Bridge151512
61 cm13 Oct 2005Gaston Bridge86943

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
Gaston Bridge13 Oct 20055 Sept 20236
US Ford Bridge Roundabout24 Aug 201724 Aug 20171
Ford Bridge Roundabout20 Aug 201024 Aug 20172
Watersplash Road, Littleton26 Aug 201126 Aug 20111
Splash Meadow, Shepperton14 Jul 201114 Jul 20111
Beasley's Ait Lane14 Jul 201114 Jul 20111
Woodthorpe Road12 Jul 201112 Jul 20111

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 270 measured fish were spread across different length ranges.

Smallest
13.2 cm
Lower quarter
33.9 cm
Median
42 cm
Upper quarter
48.7 cm
Largest
75.2 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Ash (Thames)

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

Chub Dace Gudgeon Roach Perch 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 →