Roach · Rutilus rutilus

Roach in the River Wey South

Largest measured roach: 22.8 cm

The largest roach measured in Environment Agency surveys of the River Wey South was 22.8 cm, recorded at Lower Headley Wood Farm on 6 April 2004.

Across 169 measured roach, the median measured length was 10.2 cm.

Surveyors recorded weights for 5 roach. The median was 3.5 oz (0.099 kg) and the largest recorded weight was 7 oz (0.199 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 Wey South.

See roach records across England →

Most recent observation28 June 2023Dockenfield · 31 fish

Largest measured roach: 22.8 cm
Median length: 10.2 cm
Fish measured: 169
Survey locations: 4

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
22.8 cm	6 Apr 2004	Lower Headley Wood Farm	79968
22.8 cm	6 Apr 2004	Lower Headley Wood Farm	79968
22.7 cm	6 Apr 2004	Lower Headley Wood Farm	79968
22.2 cm	10 Dec 2002	Lower Headley Wood Farm	73217
21.5 cm	6 Apr 2004	Lower Headley Wood Farm	79968
21 cm	10 Dec 2002	Lower Headley Wood Farm	73217
18.8 cm	20 Sept 2005	Headley Wood Farm	86300
18.6 cm	18 Nov 2003	Headley Wood Farm	78554
18.1 cm	2 Jul 2008	Dockenfield	111983
18.1 cm	20 Sept 2005	Headley Wood Farm	86300

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
Dockenfield	22 May 2003	28 Jun 2023	9
Mellow Farm	17 Jun 2014	17 Jun 2014	1
Headley Wood Farm	18 Nov 2003	20 Sept 2005	2
Lower Headley Wood Farm	10 Dec 2002	6 Apr 2004	2

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

2002–2023

Survey records by year

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

102

203

204

105

006

107

108

109

110

111

012

013

114

015

016

117

018

019

020

021

022

123

Fish measured by surveyors

Measured length distribution

See how the 169 measured fish were spread across different length ranges.

Smallest: 3.8 cm
Lower quarter: 7 cm
Median: 10.2 cm
Upper quarter: 12.6 cm
Largest: 22.8 cm

0–99 mm

100–199 mm

200–299 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 5 roach. This is a subset of the measured fish and may not represent the whole population.

Lightest: 0.2 oz (0.005 kg)
Lower quarter: 0.8 oz (0.024 kg)
Median: 3.5 oz (0.099 kg)
Upper quarter: 6.9 oz (0.195 kg)
Heaviest: 7 oz (0.199 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 Wey South

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

Brown / sea trout Bullhead Stone loach European eel Rainbow trout Dace

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 →