European eel · Anguilla anguilla

European eel in the River Stour

Largest measured european eel: 89.9 cm

The largest european eel measured in Environment Agency surveys of the River Stour was 89.9 cm, recorded at Mill Farm Clare on 2 September 2009.

Across 1,699 measured european eel, the median measured length was 36 cm.

Surveyors recorded weights for 1,528 european eel. The median was 3.4 oz (0.096 kg) and the largest recorded weight was 3 lb 7.2 oz (1.57 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 Stour.

See european eel records across England →

Most recent observation3 July 2026Higham Hall · 2 fish

Largest measured european eel: 89.9 cm
Median length: 36 cm
Fish measured: 1,699
Survey locations: 51

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
89.9 cm	2 Sept 2009	Mill Farm Clare	120347
87.2 cm	21 Aug 2009	Kedington FGS	120665
87.2 cm	10 Aug 2006	Lamarsh FGS A	100809
86.4 cm	17 Aug 2006	Brundon (River Stour Middle)	100792
83.4 cm	22 Aug 2018	Bush Boake Allen	154320
83.4 cm	16 Sept 2009	Wixoe Pumping Station	120495
82.8 cm	14 Aug 2024	Bush Boake Allen	167834
81.8 cm	19 Sept 2006	Baythorne End	101434
80.3 cm	22 Aug 2003	Liston Mill	77241
80.2 cm	18 Sept 2006	Mill Farm Clare	101440

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
Higham Hall	18 Aug 1983	3 Jul 2026	20
Pitmire A	26 Jul 1985	29 Jul 2025	17
Anchor Bridge	19 Jul 1983	24 Jul 2025	29
Fen Bridge	23 Aug 1983	15 Jul 2025	22
Stratford	28 Jul 1983	10 Jul 2025	16
Bower Hall	18 Oct 1985	3 Sept 2024	7
Mill Farm Clare	3 Oct 1985	23 Aug 2024	12
Bush Boake Allen	27 Sept 1985	14 Aug 2024	11
Boxted Mill	11 Jul 1985	13 Aug 2024	17
Wormingford Mill	19 Nov 1981	7 Aug 2024	11
Wiston Mill	16 Jul 1985	17 Jul 2024	13
Bures Bridge A	29 Sept 1988	10 Jul 2024	21
Bures Mill	23 Jul 1985	5 Jul 2024	21
Downstream Dedham Mill	19 Aug 1983	3 Jul 2024	13
Tendring Hall	20 Jul 1983	25 Jun 2024	14
Upstream Dedham Mill	10 Jun 1985	19 Jun 2024	13
Judas Gap Elver Trap	11 Apr 2007	19 Oct 2023	1184
Lamarsh FGS A	15 Oct 1981	16 Aug 2018	19
Mill Meadow	29 Sept 1981	1 Aug 2017	12
Shalford Weir	30 Sept 1981	9 Aug 2016	19
Flatford Mill	25 Aug 1983	1 Jul 2015	9
Wissington	24 Nov 1981	16 Jun 2015	13
Liston Mill	26 Sept 1985	7 Aug 2014	10
Clare Mill	21 Oct 1988	5 Oct 2012	8
Rats Castle	2 Oct 1985	6 Sept 2012	8
Langham Intake	21 Jul 1983	3 Aug 2010	12
Bakers Mill A	11 Nov 1981	29 Jul 2010	16
Stoke By Clare	22 Nov 1994	24 Sept 2009	3
Baythorne End	15 Oct 1980	17 Sept 2009	5
Wixoe Pumping Station	16 Sept 2009	16 Sept 2009	1
Mill Green Radial Gate	30 Sept 1991	15 Sept 2009	2
Glemsford Pits	21 Oct 1985	26 Aug 2009	8
Kedington FGS	9 Oct 1985	21 Aug 2009	4
Brundon (River Stour Middle)	5 Oct 1988	10 Aug 2009	4
Rodbridge Park	28 Oct 1994	6 Aug 2009	2
Shalford Meadow	30 Sept 1988	5 Aug 2009	7
Priory Meadow	16 Aug 1991	4 Aug 2009	5
Garnons Farm	26 Jul 1983	16 Jul 2009	10
Wick Farm	20 Jul 1983	3 Jul 2009	10
Brantham Lock	29 May 1991	22 Jun 2009	6
Little Wratting	2 Oct 1980	1 Oct 2003	3
Dedham (Old) River	24 Aug 1983	18 Jun 2003	7
Cattawade	30 Aug 1983	16 Jun 2003	6
Pentlow Street	30 Sept 1985	22 Aug 1997	5
Pentlow Mill	1 Oct 1985	1 Oct 1985	1
Pitmire B	26 Jul 1985	26 Jul 1985	1
Stratford St Mary Mill Pool	27 Jul 1983	27 Jul 1983	1
Stanch Farm B	18 Nov 1981	18 Nov 1981	1
Stanch Farm A	18 Nov 1981	18 Nov 1981	1
Bures Bridge B	12 Nov 1981	12 Nov 1981	1
Lamarsh FGS B	15 Oct 1981	15 Oct 1981	1

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

1980–2026

Survey records by year

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

280

1081

082

1383

084

3385

086

087

3288

089

090

3391

092

093

3594

095

096

3397

098

099

2900

401

402

3103

404

305

3306

11007

11108

16209

1310

8411

7812

4813

6414

9015

8716

7517

9218

5019

6320

6921

8222

6423

1524

525

126

Fish measured by surveyors

Measured length distribution

See how the 1,699 measured fish were spread across different length ranges.

Smallest: 6.4 cm
Lower quarter: 25.9 cm
Median: 36 cm
Upper quarter: 50.5 cm
Largest: 89.9 cm

0–99 mm

100–199 mm

203

200–299 mm

362

300–399 mm

412

400–499 mm

276

500–599 mm

236

600–699 mm

127

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 1,528 european eel. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0 oz (0.0006 kg)
Lower quarter: 1.3 oz (0.038 kg)
Median: 3.4 oz (0.096 kg)
Upper quarter: 8.8 oz (0.25 kg)
Heaviest: 3 lb 7.2 oz (1.57 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 Stour

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

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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 →