RiverFish

European eel · Anguilla anguilla

European eel in the River Black Esk

Largest measured european eel: 40 cm

The largest european eel measured in Environment Agency surveys of the River Black Esk was 40 cm, recorded at 2006.00 Todshaw Hill, Black Esk on 4 September 2015.

Across 244 measured european eel, the median measured length was 17 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 Black Esk.

See european eel records across England →

Most recent observation29 July 20252002.00 DS of reservoir, Black Esk · 21 fish
Largest measured european eel
40 cm
Median length
17 cm
Fish measured
244
Survey locations
3

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 Sept 20152006.00 Todshaw Hill, Black Esk146560
39 cm16 Aug 20212009.30 Tanlawhill, Black Esk160490
38 cm4 Sept 20152009.30 Tanlawhill, Black Esk146557
37.5 cm23 Aug 20062006.00 Todshaw Hill, Black Esk103188
37 cm2 Sept 20132002.00 DS of reservoir, Black Esk138420
36 cm19 Jul 20212002.00 DS of reservoir, Black Esk160422
36 cm4 Sept 20152006.00 Todshaw Hill, Black Esk146560
35 cm4 Sept 20232002.00 DS of reservoir, Black Esk163284
34 cm31 Aug 20182002.00 DS of reservoir, Black Esk153248
34 cm4 Sept 20152009.30 Tanlawhill, Black Esk146557

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
2002.00 DS of reservoir, Black Esk20 Aug 200229 Jul 202518
2009.30 Tanlawhill, Black Esk18 Sept 200916 Aug 20213
2006.00 Todshaw Hill, Black Esk23 Aug 200616 Aug 20214

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 244 measured fish were spread across different length ranges.

Smallest
6 cm
Lower quarter
12.5 cm
Median
17 cm
Upper quarter
22 cm
Largest
40 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Black Esk

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 →