RiverFish

Grayling · Thymallus thymallus

Grayling in the River Wharfe salmon riffles

Largest measured grayling: 37.2 cm

The largest grayling measured in Environment Agency surveys of the River Wharfe salmon riffles was 37.2 cm, recorded at Ilkley stepping stones riffle on 2 September 2014.

Across 33 measured grayling, the median measured length was 21.1 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 salmon riffles.

See grayling records across England →

Most recent observation13 August 2024Downstream Burley weir · 3 fish
Largest measured grayling
37.2 cm
Median length
21.1 cm
Fish measured
33
Survey locations
4

Individual EA measurements

Largest measured grayling

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

LengthSurvey dateSurvey locationSurvey ID
37.2 cm2 Sept 2014Ilkley stepping stones riffle142537
28.3 cm1 Sept 2014Downstream Otley weir142545
27.3 cm2 Sept 2014Ilkley stepping stones riffle142537
26.8 cm2 Sept 2014Ilkley stepping stones riffle142537
24.8 cm2 Sept 2014Ilkley stepping stones riffle142537
24.5 cm8 Aug 2024Downstream Otley weir168272
23.8 cm7 Aug 2024Ilkley stepping stones riffle168271
23.3 cm2 Sept 2014Ilkley stepping stones riffle142537
23.2 cm13 Aug 2024Downstream Burley weir166382
23.2 cm13 Aug 2024Downstream Burley weir166382

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

Explore the river

Where grayling were found

Each point marks a survey location with at least one grayling 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 grayling
Downstream Burley weir3 Sept 201413 Aug 20242
Downstream Otley weir1 Sept 20148 Aug 20242
Ilkley stepping stones riffle2 Sept 20147 Aug 20242
Newton Kyme3 Sept 20143 Sept 20141

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

2014–2024

Survey records by year

Each bar shows how many survey visits recorded grayling that year.

Fish measured by surveyors

Measured length distribution

See how the 33 measured fish were spread across different length ranges.

Smallest
3.8 cm
Lower quarter
12.4 cm
Median
21.1 cm
Upper quarter
23.2 cm
Largest
37.2 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Wharfe salmon riffles

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

Brown / sea trout

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 →