RiverFish

Rainbow trout · Oncorhynchus mykiss

Rainbow trout in the Bristol Avon main river

Largest measured rainbow trout: 46 cm

The largest rainbow trout measured in Environment Agency surveys of the Bristol Avon main river was 46 cm, recorded at Great Somerford (Te) on 29 September 2004.

Across 38 measured rainbow trout, the median measured length was 34.5 cm.

Surveyors recorded weights for 9 rainbow trout. The median was 1 lb 4.8 oz (0.591 kg) and the largest recorded weight was 3 lb 1.9 oz (1.41 kg).

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

See rainbow trout records across England →

Most recent observation23 August 2017Great Somerford (Te) · 12 fish
Largest measured rainbow trout
46 cm
Median length
34.5 cm
Fish measured
38
Survey locations
2

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
46 cm29 Sept 2004Great Somerford (Te)82701
43 cm24 Aug 2016Great Somerford (Te)149047
42.5 cm23 Aug 2017Great Somerford (Te)151351
41.7 cm28 Aug 2002Great Somerford (Te)60182
41.3 cm23 Aug 2017Great Somerford (Te)151351
40.5 cm29 Sept 2004Great Somerford (Te)82701
39.5 cm28 Aug 2002Great Somerford (Te)60182
39.4 cm23 Aug 2017Great Somerford (Te)151351
39 cm24 Aug 2016Great Somerford (Te)149047
37.2 cm5 Sept 2007Great Somerford (Te)106923

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
Great Somerford (Te)28 Aug 200223 Aug 20179
u/s Kingsmead Mill26 May 199926 May 19991

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

1999–2017

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 38 measured fish were spread across different length ranges.

Smallest
24.9 cm
Lower quarter
32.5 cm
Median
34.6 cm
Upper quarter
37.2 cm
Largest
46 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 9 rainbow trout. This is a subset of the measured fish and may not represent the whole population.

Lightest
11.7 oz (0.333 kg)
Lower quarter
1 lb 0.6 oz (0.472 kg)
Median
1 lb 4.8 oz (0.591 kg)
Upper quarter
1 lb 14.2 oz (0.857 kg)
Heaviest
3 lb 1.9 oz (1.41 kg)

These are direct individual weights recorded by Environment Agency surveyors. Combined bulk weights are not included.

More fish in this river

Explore the Bristol Avon main river

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

Roach Minnow Perch Chub Dace Pike

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 →