Rainbow trout · Oncorhynchus mykiss

Rainbow trout in the River Wharfe

Largest measured rainbow trout: 33.7 cm

The largest rainbow trout measured in Environment Agency surveys of the River Wharfe was 33.7 cm, recorded at Tadcaster pre 2006 on 26 July 1998.

Across 43 measured rainbow trout, the median measured length was 9.8 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 Wharfe.

See rainbow trout records across England →

Most recent observation4 August 2014Linton Stepping Stones · 2 fish

Largest measured rainbow trout: 33.7 cm
Median length: 9.8 cm
Fish measured: 43
Survey locations: 10

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.

Length	Survey date	Survey location	Survey ID
33.7 cm	26 Jul 1998	Tadcaster pre 2006	110272
33.4 cm	11 Aug 1998	Burley Bypass	110181
32.2 cm	30 Jul 1997	Burley Bypass	110039
32.2 cm	31 Jul 1996	Burley Bypass	110384
32.1 cm	30 Jul 1997	Burley Bypass	110039
31.2 cm	29 Jul 2003	Knotford	78297
26.6 cm	7 Aug 1998	Nunnery	110158
26 cm	13 Aug 2002	Appletreewick B (lower site)	73493
22.7 cm	13 Aug 2002	Appletreewick A	73491
22.5 cm	13 Aug 2002	Appletreewick B (lower site)	73493

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 surveyed	First recorded	Last recorded	Visits finding rainbow trout
Linton Stepping Stones	3 Aug 1996	4 Aug 2014	8
Pool Mill	28 Jul 1997	28 Jun 2005	3
Strid d/s (Bolton Abbey)	7 Aug 2003	7 Aug 2003	1
Knotford	29 Jul 2003	29 Jul 2003	1
Appletreewick B (lower site)	13 Aug 2002	13 Aug 2002	1
Appletreewick A	13 Aug 2002	13 Aug 2002	1
Burley Bypass	31 Jul 1996	11 Aug 1998	3
Nunnery	7 Aug 1998	7 Aug 1998	1
Conistone d/s	27 Jul 1998	27 Jul 1998	1
Tadcaster pre 2006	26 Jul 1998	26 Jul 1998	1

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

1996–2014

Survey records by year

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

296

397

698

199

100

001

302

203

004

105

006

007

008

009

010

111

012

013

114

Fish measured by surveyors

Measured length distribution

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

Smallest: 4.6 cm
Lower quarter: 7.8 cm
Median: 9.8 cm
Upper quarter: 19.8 cm
Largest: 33.7 cm

0–99 mm

100–199 mm

200–299 mm

300–399 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Wharfe

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

Minnow Bullhead Stone loach Brown / sea trout European eel 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 →