RiverFish

Roach · Rutilus rutilus

Roach in the River Scout Dike

Largest measured roach: 20.2 cm

The largest roach measured in Environment Agency surveys of the River Scout Dike was 20.2 cm, recorded at Downstream B6462 on 22 September 1997.

Across 124 measured roach, the median measured length was 12.4 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 Scout Dike.

See roach records across England →

Most recent observation29 September 2023Nether Mill Fishery · 23 fish
Largest measured roach
20.2 cm
Median length
12.4 cm
Fish measured
124
Survey locations
4

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
20.2 cm22 Sept 1997Downstream B646225173
19.7 cm29 Sept 2000Downstream B6462109184
19.1 cm29 Sept 2000Downstream B6462109184
18.6 cm29 Sept 2000Downstream B6462109184
18.3 cm28 Sept 2004Downstream B646284125
17.8 cm21 Sept 2001Downstream B6462109192
17.5 cm29 Sept 2000Downstream B6462109184
17.4 cm28 Sept 2004Downstream B646284125
16.5 cm21 Aug 2002Downstream B6462109191
15.1 cm15 Aug 2003Downstream Compensation Release78736

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
Nether Mill Fishery29 Sept 202329 Sept 20231
Downstream B646222 Sept 19977 Sept 20176
Scout Dike Downstream Ingbirchworth Res6 Oct 20086 Oct 20081
Downstream Compensation Release15 Aug 200315 Aug 20031

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

1997–2023

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 124 measured fish were spread across different length ranges.

Smallest
3.1 cm
Lower quarter
11.2 cm
Median
12.5 cm
Upper quarter
13.7 cm
Largest
20.2 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Scout Dike

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

3-spined stickleback Brown / sea trout Bullhead Perch Stone loach Minnow

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 →