European eel · Anguilla anguilla

European eel in the River Middle Ouse

Largest measured european eel: 80 cm

The largest european eel measured in Environment Agency surveys of the River Middle Ouse was 80 cm, recorded at Hemingford Grey on 28 August 2003.

Across 4,924 measured european eel, the median measured length was 11.4 cm.

Surveyors recorded weights for 34 european eel. The median was 3.9 oz (0.11 kg) and the largest recorded weight was 1 lb 11.9 oz (0.79 kg).

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

See european eel records across England →

Most recent observation23 September 2024Brownshill Elver Trap · 91 fish

Largest measured european eel: 80 cm
Median length: 11.4 cm
Fish measured: 4,924
Survey locations: 28

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.

Length	Survey date	Survey location	Survey ID
80 cm	28 Aug 2003	Hemingford Grey	76969
75 cm	24 Jun 1992	Kelpie Marina	29131
71 cm	12 Aug 2008	US Dolphin Meadow	112585
68 cm	20 Jul 2004	Portholme Meadow	80782
58.2 cm	17 Aug 2015	Longholme	145988
55 cm	28 Aug 2003	Hemingford Grey	76969
53 cm	12 Aug 2008	US Dolphin Meadow	112585
48 cm	25 Apr 2007	Hermitage Lock Drain (Eel Monitoring)	108697
48 cm	24 Jun 1992	Kelpie Marina	29131
43.2 cm	9 Jul 2011	Brownshill Elver Trap	174192

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 surveyed	First recorded	Last recorded	Visits finding european eel
Brownshill Elver Trap	12 Apr 2010	23 Sept 2024	922
Longholme	24 Jul 1989	17 Aug 2015	2
Pike & Eel	8 Nov 1989	27 Sept 2013	7
US Dolphin Meadow	24 Oct 1989	12 Aug 2008	4
Hermitage Lock Drain (Eel Monitoring)	25 Apr 2007	25 Apr 2007	1
Holywell	14 Aug 1992	20 Jul 2005	4
Renhold	24 Jun 2005	24 Jun 2005	1
Portholme Meadow	20 Jul 2004	20 Jul 2004	1
Hemingford Grey	23 Oct 1989	28 Aug 2003	2
Earith	17 Aug 1999	17 Aug 1999	1
Bluntisham	10 Sept 1992	6 Aug 1999	3
St Ives	15 Aug 1995	2 Aug 1999	2
Dolphin Meadow	25 Oct 1989	29 Jul 1999	2
Hemingford Abbots	5 Oct 1989	26 Jul 1999	2
Houghton	10 Aug 1992	23 Jul 1999	2
Houghton Lock	19 Jul 1999	19 Jul 1999	1
Hartford Church	16 Jul 1999	16 Jul 1999	1
Castle Hills Huntingdon	2 Oct 1989	12 Jul 1999	3
St Neots Common	14 Aug 1989	3 Sept 1998	2
Barford Power Station	9 Aug 1989	25 Aug 1998	2
Barford Bridge	12 Aug 1998	12 Aug 1998	1
Willington	11 Aug 1998	11 Aug 1998	1
Cardington Navigation	31 Jul 1989	5 Aug 1998	2
Kelpie Marina	8 Aug 1989	24 Jun 1992	2
Buckden Marina	15 Sept 1989	15 Sept 1989	1
Offord Triangle	13 Sept 1989	13 Sept 1989	1
DS Samual Jones	17 Aug 1989	17 Aug 1989	1
Wyboston Lakes	7 Aug 1989	7 Aug 1989	1

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

1989–2024

Survey records by year

Each bar shows how many survey visits recorded european eel that year.

1589

090

091

592

093

094

395

096

097

598

1199

000

001

002

203

204

205

106

107

208

109

8310

14911

3112

11513

4114

8415

4916

6617

1918

5019

5520

1221

8122

4623

4424

Fish measured by surveyors

Measured length distribution

See how the 4,924 measured fish were spread across different length ranges.

Smallest: 1 cm
Lower quarter: 9.3 cm
Median: 11.4 cm
Upper quarter: 13.6 cm
Largest: 80 cm

0–99 mm

1630

100–199 mm

3169

200–299 mm

300–399 mm

400–499 mm

500–599 mm

600–699 mm

700–799 mm

800–899 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 34 european eel. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0.4 oz (0.01 kg)
Lower quarter: 1.8 oz (0.05 kg)
Median: 3.9 oz (0.11 kg)
Upper quarter: 11.7 oz (0.3312 kg)
Heaviest: 1 lb 11.9 oz (0.79 kg)

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

More fish in this river

Explore the River Middle Ouse

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

Perch Roach Pike Bleak Gudgeon Common bream

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 →