RiverFish

Roach · Rutilus rutilus

Roach in the River Ivel

Largest measured roach: 34.3 cm

The largest roach measured in Environment Agency surveys of the River Ivel was 34.3 cm, recorded at DS Iron Bridge on 7 January 1992.

Across 4,645 measured roach, the median measured length was 10.8 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 Ivel.

See roach records across England →

Most recent observation8 October 2025Henlow · 167 fish
Largest measured roach
34.3 cm
Median length
10.8 cm
Fish measured
4,645
Survey locations
15

Individual EA measurements

Largest measured roach

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

LengthSurvey dateSurvey locationSurvey ID
34.3 cm7 Jan 1992DS Iron Bridge29258
34.3 cm3 Jan 1992Henlow29255
33 cm2 May 1995Langford Nursery103259
32.8 cm8 Jan 1992Biggleswade Common29259
32.8 cm8 Jan 1992Biggleswade Common29259
32.3 cm29 May 1998Henlow29265
32 cm5 May 1995Henlow103258
31.8 cm8 Jan 1992Biggleswade Common29259
31.8 cm7 Jan 1992DS Iron Bridge29258
31.8 cm3 Jan 1992Henlow29255

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 surveyedFirst recordedLast recordedVisits finding roach
Henlow13 Mar 19898 Oct 202517
Girtford Weir7 Jul 198930 Apr 20259
Biggleswade Common9 Jun 198929 Apr 202515
DS Iron Bridge8 Jun 19899 Apr 202515
Gt Ouse Confluence12 Jun 198919 May 201615
Langford Mill26 Nov 200926 Nov 20091
Sandy27 Jan 199225 May 20054
Broom Mill11 Jul 198917 May 20055
Langford Nursery14 Mar 198929 Apr 20055
Saw Mills Tempsford22 Aug 200322 Aug 20031
Henlow Control Site3 May 20003 May 20001
Beeston5 Jul 198930 Jul 19984
High Romper Bridge23 Jun 19899 Jun 19984
Astwick2 Jan 199227 May 19982
Girtford Bridge11 May 199511 May 19951

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

1989–2025

Survey records by year

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

Fish measured by surveyors

Measured length distribution

See how the 4,645 measured fish were spread across different length ranges.

Smallest
3.3 cm
Lower quarter
8.3 cm
Median
10.8 cm
Upper quarter
13.3 cm
Largest
34.3 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Ivel

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

Chub Pike Gudgeon Dace Bullhead Perch

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 →