RiverFish

Roach · Rutilus rutilus

Roach in the River Romney - Old Windsor

Largest measured roach: 29.4 cm

The largest roach measured in Environment Agency surveys of the River Romney - Old Windsor was 29.4 cm, recorded at Blackpotts on 4 September 2003.

Across 2,916 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 Romney - Old Windsor.

See roach records across England →

Most recent observation29 July 2025Romney Weir Stream · 42 fish
Largest measured roach
29.4 cm
Median length
9.9 cm
Fish measured
2,916
Survey locations
8

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
29.4 cm4 Sept 2003Blackpotts79186
28.5 cm12 Sept 2002Romney Main72044
28.2 cm12 Sept 2002Romney Main72044
27.5 cm6 Sept 2016Romney Weir Stream149250
27.5 cm12 Sept 2002Romney Main72044
27.4 cm12 Sept 2002Romney Main72044
27.2 cm2 Aug 2022Romney Weir Stream161312
27.1 cm12 Sept 2002Romney Main72044
27 cm6 Sept 2005Blackpotts86330
26.9 cm12 Sept 2002Romney Main72044

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
Romney Weir Stream1 Sept 200029 Jul 202521
Upstream Datchet Intake4 Sept 200313 Sept 201911
Downstream Datchet Intake6 Sept 200513 Sept 20199
Romney Weir Pool1 Sept 19954 Sept 201314
Blackpotts4 Sept 20034 Sept 201311
Old Windsor Lock Cut5 Sept 20085 Sept 20081
Romney to Jubilee9 Sept 20049 Sept 20041
Romney Main1 Sept 199512 Sept 20025

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 2,916 measured fish were spread across different length ranges.

Smallest
2.9 cm
Lower quarter
8.2 cm
Median
9.9 cm
Upper quarter
12.5 cm
Largest
29.4 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Romney - Old Windsor

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

Pike Dace Bleak European eel Perch Chub

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 →