Roach · Rutilus rutilus

Roach in the Willow Brook

Largest measured roach: 39.5 cm

The largest roach measured in Environment Agency surveys of the Willow Brook was 39.5 cm, recorded at Apethorpe on 14 February 1989.

Across 3,942 measured roach, the median measured length was 15 cm.

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

See roach records across England →

Most recent observation25 October 2018Walcot Lodge DS Site · 4 fish

Largest measured roach: 39.5 cm
Median length: 15 cm
Fish measured: 3,942
Survey locations: 10

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
39.5 cm	14 Feb 1989	Apethorpe	54445
34.5 cm	15 Aug 2001	Woodnewton	72898
33 cm	4 Mar 1992	Apethorpe	54454
31.5 cm	2 May 1995	Apethorpe	54463
31.5 cm	2 May 1995	Apethorpe	54463
31.5 cm	4 Mar 1992	Apethorpe	54454
31.5 cm	27 Feb 1992	Bulwick	54451
31 cm	4 Mar 1992	King's Cliffe	54453
31 cm	26 Feb 1992	Alder Farm	54452
31 cm	26 Feb 1992	Alder Farm	54452

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
Walcot Lodge DS Site	27 May 2018	25 Oct 2018	2
Bulwick	21 Feb 1989	23 Oct 2018	11
Walcot Lodge US Site	26 May 2018	26 May 2018	1
Alder Farm	26 Feb 1992	15 Jun 2015	4
Woodnewton	15 Feb 1989	29 May 2015	9
Apethorpe	14 Feb 1989	8 May 2015	5
Downstream Deene Lake	22 Feb 1989	1 May 2015	5
Weldon	30 Mar 2015	30 Mar 2015	1
King's Cliffe	21 Feb 1989	10 Aug 1998	4
Lodge Farm	27 Feb 1992	4 Aug 1998	3

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

1989–2018

Survey records by year

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

589

090

091

792

093

094

695

096

097

798

099

000

201

002

003

004

005

106

007

008

109

010

211

212

213

014

615

016

017

418

Fish measured by surveyors

Measured length distribution

See how the 3,942 measured fish were spread across different length ranges.

Smallest: 1.5 cm
Lower quarter: 13.5 cm
Median: 15 cm
Upper quarter: 18 cm
Largest: 39.5 cm

0–99 mm

100–199 mm

3142

200–299 mm

677

300–399 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Willow Brook

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

Chub Gudgeon Perch Bullhead European eel 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 →