RiverFish

Rainbow trout · Oncorhynchus mykiss

Rainbow trout in the River Washburn

Largest measured rainbow trout: 46.2 cm

The largest rainbow trout measured in Environment Agency surveys of the River Washburn was 46.2 cm, recorded at D/s of Swinsty Reservoir on 25 July 2002.

Across 43 measured rainbow trout, the median measured length was 30 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 Washburn.

See rainbow trout records across England →

Most recent observation18 September 2008Upstream Leathley Bridge (YW HMWB site 8) · 2 fish
Largest measured rainbow trout
46.2 cm
Median length
30 cm
Fish measured
43
Survey locations
4

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
46.2 cm25 Jul 2002D/s of Swinsty Reservoir73479
44.2 cm23 Aug 1999D/s of Swinsty Reservoir110476
39.7 cm23 Aug 1999D/s of Swinsty Reservoir110476
39.3 cm23 Aug 1999D/s of Swinsty Reservoir110476
38.2 cm23 Aug 1999D/s of Swinsty Reservoir110476
38.1 cm1 Aug 2000Upstream of Fewston Reservoir110722
37.7 cm25 Jul 2002D/s of Swinsty Reservoir73479
37.7 cm25 Jul 2001Upstream of Fewston Reservoir25670
36.8 cm23 Jul 1998D/s of Swinsty Reservoir110336
36.7 cm23 Jul 1998D/s of Swinsty Reservoir110336

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
Upstream Leathley Bridge (YW HMWB site 8)18 Sept 200818 Sept 20081
Leathley Bridge9 Mar 199714 Aug 20034
Upstream of Fewston Reservoir1 Aug 200025 Jul 20023
D/s of Swinsty Reservoir27 Sept 199625 Jul 20025

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

1996–2008

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
6.2 cm
Lower quarter
24.7 cm
Median
30 cm
Upper quarter
36.4 cm
Largest
46.2 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Washburn

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

Brown / sea trout Stone loach Minnow Bullhead Perch Gudgeon

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 →