RiverFish

Roach · Rutilus rutilus

Roach in the River Old Windsor - Bell

Largest measured roach: 27.2 cm

The largest roach measured in Environment Agency surveys of the River Old Windsor - Bell was 27.2 cm, recorded at Ham Loop on 5 September 2003.

Across 3,146 measured roach, the median measured length was 9.9 cm.

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

See roach records across England →

Most recent observation29 August 2025Ham Loop · 113 fish
Largest measured roach
27.2 cm
Median length
9.9 cm
Fish measured
3,146
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.

LengthSurvey dateSurvey locationSurvey ID
27.2 cm5 Sept 2003Ham Loop77010
26.7 cm8 Sept 2011Ham Loop128325
26.2 cm8 Sept 2011Ham Loop128325
25.7 cm8 Sept 2011Ham Loop128325
25.7 cm7 Sept 2005Ham Loop86738
25.5 cm8 Sept 2011Ham Loop128325
24.6 cm3 Sept 2014Ham Loop142614
24.4 cm7 Sept 2005Ham Loop86738
23.4 cm30 Jul 2023Ham Loop164013
23 cm5 Sept 2003Ham Loop77010

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
Ham Loop1 Sept 199529 Aug 202524
Old Windsor Main Channel1 Sept 19955 Sept 20138
Old Windsor, Weir Pool1 Sept 19957 Sept 20077
Upper Old Windsor Main Channel7 Sept 20057 Sept 20051
Lower Old Windsor Main Channel7 Sept 20057 Sept 20051

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

1995–2025

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 3,146 measured fish were spread across different length ranges.

Smallest
1.5 cm
Lower quarter
8 cm
Median
9.9 cm
Upper quarter
13.2 cm
Largest
27.2 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Old Windsor - Bell

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

Perch Pike Bleak European eel Chub 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 →