Roach · Rutilus rutilus

Roach in the River Wallers Haven

Largest measured roach: 25.2 cm

The largest roach measured in Environment Agency surveys of the River Wallers Haven was 25.2 cm, recorded at Upstream Boreham Bridge on 29 August 2003.

Across 2,665 measured roach, the median measured length was 6.7 cm.

Surveyors recorded weights for 561 roach. The median was 0.4 oz (0.01 kg) and the largest recorded weight was 10.4 oz (0.295 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 Wallers Haven.

See roach records across England →

Most recent observation14 October 2025Horse Bridge · 167 fish

Largest measured roach: 25.2 cm
Median length: 6.7 cm
Fish measured: 2,665
Survey locations: 8

Individual EA measurements

Largest measured roach

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
25.2 cm	29 Aug 2003	Upstream Boreham Bridge	76999
25.1 cm	29 Aug 2003	Upstream Boreham Bridge	76999
24.8 cm	29 Aug 2003	Upstream Boreham Bridge	76999
24.5 cm	29 Aug 2003	Upstream Boreham Bridge	76999
24.2 cm	12 Sept 2006	Upstream Boreham Bridge	102722
23.6 cm	14 Oct 2025	Horse Bridge	179400
22.5 cm	29 Aug 2003	Upstream Boreham Bridge	76999
22.4 cm	9 Aug 2016	Downstream Tilley Bridge	148936
22.1 cm	19 Aug 2016	Upstream Boreham Bridge	149219
21.5 cm	5 Jul 2016	Middle Bridge	148542

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

Explore the river

Where roach were found

Each point marks a survey location with at least one roach 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 roach
Horse Bridge	18 Sept 2008	14 Oct 2025	6
Upstream Boreham Bridge	9 Nov 1999	9 Sept 2025	13
Pebsham Bridge	17 Sept 2018	17 Sept 2018	1
Downstream Tilley Bridge	29 Jun 2010	9 Aug 2016	2
Middle Bridge	1 Oct 2003	5 Jul 2016	3
A259 Barnhorn Bridge	29 Jun 2010	29 Jun 2010	1
Nunningham Stream	21 Jan 2000	21 Jan 2000	1
Downstream Boreham Bridge	20 May 1993	20 May 1993	1

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

1993–2025

Survey records by year

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

193

094

095

096

097

098

199

100

001

102

203

104

105

106

107

208

209

210

111

112

113

014

015

416

017

118

219

020

021

022

023

024

225

Fish measured by surveyors

Measured length distribution

See how the 2,665 measured fish were spread across different length ranges.

Smallest: 2.8 cm
Lower quarter: 6 cm
Median: 6.7 cm
Upper quarter: 9.3 cm
Largest: 25.2 cm

0–99 mm

2176

100–199 mm

469

200–299 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 561 roach. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0 oz (0.001 kg)
Lower quarter: 0.2 oz (0.005 kg)
Median: 0.4 oz (0.01 kg)
Upper quarter: 0.6 oz (0.017 kg)
Heaviest: 10.4 oz (0.295 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 Wallers Haven

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

Perch European eel Pike Common bream Gudgeon Bullhead

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 →