Roach · Rutilus rutilus

Roach in the River US Cam

Largest measured roach: 33.8 cm

The largest roach measured in Environment Agency surveys of the River US Cam was 33.8 cm, recorded at Gt Chesterford on 12 December 1996.

Across 3,775 measured roach, the median measured length was 12.3 cm.

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

See roach records across England →

Most recent observation2 June 2026Pampisford Mill · 25 fish

Largest measured roach: 33.8 cm
Median length: 12.3 cm
Fish measured: 3,775
Survey locations: 13

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
33.8 cm	12 Dec 1996	Gt Chesterford	29472
33.3 cm	7 May 1991	P.B.I (Trumpington Meadows)	29461
32.5 cm	7 May 1991	P.B.I (Trumpington Meadows)	29461
32.5 cm	7 May 1991	P.B.I (Trumpington Meadows)	29461
32.3 cm	7 May 1991	P.B.I (Trumpington Meadows)	29461
31.8 cm	12 Dec 1996	Gt Chesterford	29472
31.8 cm	27 Sept 1993	Gt Chesterford	29464
31.8 cm	7 May 1991	P.B.I (Trumpington Meadows)	29461
31.3 cm	12 Dec 1996	Gt Chesterford	29472
31.3 cm	7 May 1991	P.B.I (Trumpington Meadows)	29461

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
Pampisford Mill	1 May 1991	2 Jun 2026	8
Littlebury	26 Apr 1991	12 Mar 2025	7
P.B.I (Trumpington Meadows)	7 May 1991	11 Jul 2019	5
Hinxton	24 Sept 1993	3 Jul 2013	5
Byron's Pool Bypass Channel	4 Apr 2011	4 Jul 2012	2
Hauxton Junction	11 Nov 2010	11 Nov 2010	1
Hauxton Mill Bridge	17 Sept 2008	17 Sept 2008	1
Dernford Weir	19 Oct 2002	19 Oct 2002	1
Shelford Mill	18 Oct 2002	18 Oct 2002	1
Rectory Farm	3 May 1991	17 Dec 1996	3
Sawston Paper Mill	2 May 1991	16 Dec 1996	3
Gt Chesterford	27 Sept 1993	12 Dec 1996	2
Wendens Ambo	23 Apr 1991	8 Oct 1993	2

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

1991–2026

Survey records by year

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

691

092

893

094

095

696

097

198

099

000

001

202

003

004

205

006

007

208

009

210

111

112

413

014

015

016

017

018

319

020

021

022

023

024

225

126

Fish measured by surveyors

Measured length distribution

See how the 3,775 measured fish were spread across different length ranges.

Smallest: 3.8 cm
Lower quarter: 8.8 cm
Median: 12.3 cm
Upper quarter: 16.8 cm
Largest: 33.8 cm

0–99 mm

1365

100–199 mm

1924

200–299 mm

468

300–399 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River US Cam

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

Chub Perch Gudgeon Dace Brown / sea trout 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 →