Roach · Rutilus rutilus

Roach in the Cuffley Brook

Largest measured roach: 20 cm

The largest roach measured in Environment Agency surveys of the Cuffley Brook was 20 cm, recorded at Upstream Wildwoods on 28 November 2016.

Across 852 measured roach, the median measured length was 11.1 cm.

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

See roach records across England →

Most recent observation10 October 2019Upstream Wildwoods · 5 fish

Largest measured roach: 20 cm
Median length: 11.1 cm
Fish measured: 852
Survey locations: 5

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
20 cm	28 Nov 2016	Upstream Wildwoods	150205
18.6 cm	6 Dec 2013	Glasgow Stud	140284
18.5 cm	28 Nov 2016	Upstream Wildwoods	150205
18.5 cm	19 Aug 2014	Glasgow Stud 2	142376
18.4 cm	31 May 2013	Upstream Wildwoods	136259
18.3 cm	25 Mar 2014	Glasgow Stud 2	140549
18.2 cm	27 Nov 2013	Rotenone treatment zone	140267
18.2 cm	27 Nov 2013	Rotenone treatment zone	140267
18 cm	25 Mar 2014	Glasgow Stud 2	140549
17.9 cm	13 Dec 2013	Glasgow Stud 2	140381

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
Upstream Wildwoods	31 May 2013	10 Oct 2019	4
Glasgow Stud 2	13 Dec 2013	14 Nov 2016	4
Flash Lane	20 Aug 2014	16 Oct 2015	3
Glasgow Stud	6 Dec 2013	6 Dec 2013	1
Rotenone treatment zone	27 Nov 2013	27 Nov 2013	1

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

2013–2019

Survey records by year

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

413

314

315

216

017

018

119

Fish measured by surveyors

Measured length distribution

See how the 852 measured fish were spread across different length ranges.

Smallest: 2.4 cm
Lower quarter: 9.9 cm
Median: 11.1 cm
Upper quarter: 12.6 cm
Largest: 20 cm

0–99 mm

217

100–199 mm

634

200–299 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Cuffley Brook

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

3-spined stickleback Minnow Stone loach Gudgeon Topmouth gudgeon

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 →