Rudd · Scardinius erythrophthalmus

Rudd in the River Chelmer

Largest measured rudd: 35 cm

The largest rudd measured in Environment Agency surveys of the River Chelmer was 35 cm, recorded at Upstream Croxtons on 16 August 1989.

Across 116 measured rudd, the median measured length was 11.6 cm.

Surveyors recorded weights for 2 rudd. The median was 5.9 oz (0.1685 kg) and the largest recorded weight was 7.1 oz (0.2 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 Chelmer.

See rudd records across England →

Most recent observation26 June 2025Downstream Paper Mills · 1 fish

Largest measured rudd: 35 cm
Median length: 11.6 cm
Fish measured: 116
Survey locations: 30

Individual EA measurements

Largest measured rudd

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
35 cm	16 Aug 1989	Upstream Croxtons	14327
28.1 cm	10 Oct 1989	Hoe Mill	14306
27 cm	10 Oct 1989	Hoe Mill	14306
27 cm	15 Oct 1986	Upstream Beeleigh Lock	14260
26.5 cm	10 Oct 1989	Hoe Mill	14306
26 cm	10 Oct 1989	Hoe Mill	14306
25.9 cm	5 Oct 1998	Hoe Mill	14426
22.2 cm	18 Aug 1998	Felstead A	14454
21.1 cm	3 Oct 1983	Langley Waltham	60520
21 cm	29 Jun 2001	Boreham Bridge (C&B Canal)	15608

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where rudd were found

Each point marks a survey location with at least one rudd 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 rudd
Downstream Paper Mills	26 Jun 1986	26 Jun 2025	4
Sugar Mills	21 Jun 2001	6 Jun 2025	4
Downstream Ricketts Lock	5 Jun 2025	5 Jun 2025	1
Brookend	11 Jul 1989	12 Jul 2022	3
Camsix Farm A	3 Sept 1986	22 Aug 2019	4
Boreham Bridge (C&B Canal)	29 Jun 2001	11 Jul 2019	5
Barnes Mill	18 Jun 2019	18 Jun 2019	1
Upstream Ricketts Lock	17 Oct 1986	19 Oct 2007	4
Upstream Croxtons	16 Aug 1989	13 Aug 2007	4
Hoffmans Mill	15 Aug 1989	2 Aug 2007	3
Kings Mill	7 Jul 2004	20 Jun 2007	2
Hoe Mill	10 Oct 1989	14 Oct 2004	4
Churchend FGS	26 Aug 1998	29 Sept 2004	3
Langleys Dunmow	28 Sept 2004	28 Sept 2004	1
Felstead A	18 Oct 1995	17 Aug 2001	3
Absol Bridge	17 Oct 1995	15 Aug 2001	2
Warners Farm	12 Oct 1995	8 Aug 2001	2
Little Waltham	6 Aug 2001	6 Aug 2001	1
Springfield	3 Aug 2001	3 Aug 2001	1
Sandford Cut	12 Aug 1992	10 Jul 2001	2
Upstream Sandford Lock	21 Oct 1998	21 Oct 1998	1
Upstream Paper Mills	14 Oct 1998	14 Oct 1998	1
Littley Park	13 Oct 1995	12 Aug 1998	2
Langley Waltham	3 Oct 1983	31 Jul 1998	2
Chelmsford Viaduct	16 Jul 1998	16 Jul 1998	1
Gasworks Reach	15 Nov 1995	15 Nov 1995	1
Downstream Stonhams Lock	1 Nov 1995	1 Nov 1995	1
Upstream Beeleigh Lock	15 Oct 1986	15 Oct 1986	1
Downstream Croxtons	7 Oct 1983	7 Oct 1983	1
Camsix Farm B	28 Sept 1983	28 Sept 1983	1

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

1983–2025

Survey records by year

Each bar shows how many survey visits recorded rudd that year.

383

084

085

486

087

088

489

090

091

292

093

094

795

096

097

1198

099

000

1201

002

003

404

005

106

607

008

109

010

011

012

313

014

015

016

017

018

419

020

021

122

023

024

325

Fish measured by surveyors

Measured length distribution

See how the 116 measured fish were spread across different length ranges.

Smallest: 4 cm
Lower quarter: 9.4 cm
Median: 11.6 cm
Upper quarter: 14.6 cm
Largest: 35 cm

0–99 mm

100–199 mm

200–299 mm

300–399 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 2 rudd. This is a subset of the measured fish and may not represent the whole population.

Lightest: 4.8 oz (0.137 kg)
Lower quarter: 5.4 oz (0.1528 kg)
Median: 5.9 oz (0.1685 kg)
Upper quarter: 6.5 oz (0.1842 kg)
Heaviest: 7.1 oz (0.2 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 Chelmer

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

Chub Roach Pike Dace Gudgeon European eel

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 →