RiverFish

Rainbow trout · Oncorhynchus mykiss

Rainbow trout in the Nailsworth Stream

Largest measured rainbow trout: 17 cm

The largest rainbow trout measured in Environment Agency surveys of the Nailsworth Stream was 17 cm, recorded at Horsley Stream, Grigg Mill on 11 March 1992.

Across 43 measured rainbow trout, the median measured length was 14.2 cm.

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

See rainbow trout records across England →

Most recent observation23 August 1995Gatcombe d/s WRW · 3 fish
Largest measured rainbow trout
17 cm
Median length
14.2 cm
Fish measured
43
Survey locations
3

Individual EA measurements

Largest measured rainbow trout

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

LengthSurvey dateSurvey locationSurvey ID
17 cm11 Mar 1992Horsley Stream, Grigg Mill55028
16.5 cm11 Mar 1992Horsley Stream, Grigg Mill55028
16.4 cm11 Mar 1992Horsley Stream, Grigg Mill55028
16.2 cm11 Mar 1992Horsley Stream, Grigg Mill55028
15.8 cm11 Mar 1992Horsley Stream, Grigg Mill55028
15.8 cm11 Mar 1992Horsley Stream, Grigg Mill55028
15.4 cm11 Mar 1992Horsley Stream, Grigg Mill55028
15.3 cm11 Mar 1992Horsley Stream, Grigg Mill55028
15.1 cm23 Aug 1995Horsley Stream, Grigg Mill55025
15 cm11 Mar 1992Horsley Stream, Grigg Mill55028

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where rainbow trout were found

Each point marks a survey location with at least one rainbow trout 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 rainbow trout
Horsley Stream, Grigg Mill11 Mar 199223 Aug 19952
Gatcombe d/s WRW23 Aug 199523 Aug 19951
Avening Stream9 Mar 19929 Mar 19921

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

1992–1995

Survey records by year

Each bar shows how many survey visits recorded rainbow trout that year.

Fish measured by surveyors

Measured length distribution

See how the 43 measured fish were spread across different length ranges.

Smallest
11.2 cm
Lower quarter
13.1 cm
Median
14.2 cm
Upper quarter
14.8 cm
Largest
17 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Nailsworth Stream

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

Brown / sea trout Bullhead European eel 3-spined stickleback

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 →