RiverFish

European eel · Anguilla anguilla

European eel in the River Gaunless

Largest measured european eel: 66.6 cm

The largest european eel measured in Environment Agency surveys of the River Gaunless was 66.6 cm, recorded at River Gaunless at Evenwood on 14 July 2017.

Across 36 measured european eel, the median measured length was 37.1 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 Gaunless.

See european eel records across England →

Most recent observation25 September 2025River Gaunless Spring Garden u/s flood defence · 2 fish
Largest measured european eel
66.6 cm
Median length
37.1 cm
Fish measured
36
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
66.6 cm14 Jul 2017River Gaunless at Evenwood150939
65 cm14 Jul 2017River Gaunless at Hummer Beck150943
64 cm5 Oct 2023River Gaunless at Hummer Beck164367
57.2 cm16 Jul 2017Hummer Beck at Hummer Beck Farm150935
53.5 cm14 Jul 2017River Gaunless at Evenwood150939
50 cm5 Oct 2023River Gaunless at Hummer Beck164367
49.5 cm14 Jul 2017River Gaunless at Spring Garden150940
49.3 cm16 Jul 2017Hummer Beck at Hummer Beck Farm150935
48.5 cm15 Jul 2014River Gaunless at South Church141703
47.5 cm24 Aug 2011River Gaunless at Evenwood129032

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
River Gaunless Spring Garden u/s flood defence25 Sept 202525 Sept 20251
River Gaunless at South Church15 Jul 20145 Oct 20233
River Gaunless at Hummer Beck14 Jul 20175 Oct 20232
River Gaunless at Spring Garden3 Aug 20092 Oct 20236
River Gaunless at Lowlands27 Sept 202327 Sept 20231
Hummer Beck at Hummer Beck Farm16 Jul 201716 Jul 20171
River Gaunless at Evenwood24 Aug 201114 Jul 20172

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

2009–2025

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 36 measured fish were spread across different length ranges.

Smallest
15 cm
Lower quarter
24.2 cm
Median
37.1 cm
Upper quarter
47.8 cm
Largest
66.6 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Gaunless

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

Brown / sea trout Bullhead Minnow Stone loach 3-spined stickleback 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 →