Roach · Rutilus rutilus

Roach in the Broxbourne Mill Stream

Largest measured roach: 22.8 cm

The largest roach measured in Environment Agency surveys of the Broxbourne Mill Stream was 22.8 cm, recorded at Broxbourne Mill Stream on 8 October 1992.

Across 634 measured roach, the median measured length was 12.9 cm.

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

See roach records across England →

Most recent observation17 July 2017Carthagena Fisheries · 35 fish

Largest measured roach: 22.8 cm
Median length: 12.9 cm
Fish measured: 634
Survey locations: 2

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	8 Oct 1992	Broxbourne Mill Stream	116049
21.8 cm	29 Jul 2010	Carthagena Fisheries	123141
21.7 cm	8 Oct 1992	Broxbourne Mill Stream	116049
21.2 cm	8 Oct 1992	Broxbourne Mill Stream	116049
20.7 cm	22 Sept 2006	Carthagena Fisheries	101464
20.5 cm	9 Oct 2008	Carthagena Fisheries	115418
19.9 cm	8 Oct 1992	Broxbourne Mill Stream	116049
19.9 cm	8 Oct 1992	Broxbourne Mill Stream	116049
19.9 cm	8 Oct 1992	Broxbourne Mill Stream	116049
19.8 cm	8 Oct 1992	Broxbourne Mill Stream	116049

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
Carthagena Fisheries	15 Oct 1992	17 Jul 2017	12
Broxbourne Mill Stream	8 Oct 1992	8 Oct 1992	1

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

1992–2017

Survey records by year

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

292

093

094

095

096

097

098

099

000

001

102

103

004

205

106

107

108

109

110

011

012

113

014

015

016

117

Fish measured by surveyors

Measured length distribution

See how the 634 measured fish were spread across different length ranges.

Smallest: 3.1 cm
Lower quarter: 10.3 cm
Median: 12.9 cm
Upper quarter: 15.2 cm
Largest: 22.8 cm

0–99 mm

141

100–199 mm

487

200–299 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Broxbourne Mill Stream

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

Perch Pike Tench Bleak

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 →