RiverFish

Grayling · Thymallus thymallus

Grayling in the River Wharfe

Largest measured grayling: 44.8 cm

The largest grayling measured in Environment Agency surveys of the River Wharfe was 44.8 cm, recorded at Pool Mill on 30 July 2003.

Across 4,165 measured grayling, the median measured length was 10.8 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 grayling records across England →

Most recent observation22 August 2024Pool Mill · 29 fish
Largest measured grayling
44.8 cm
Median length
10.8 cm
Fish measured
4,165
Survey locations
18

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
44.8 cm30 Jul 2003Pool Mill78300
41.8 cm8 Aug 1997Linton Stepping Stones110013
41.4 cm3 Aug 1996Linton Stepping Stones110362
41.3 cm3 Aug 1996Linton Stepping Stones110362
41.1 cm3 Aug 1996Linton Stepping Stones110362
40.2 cm1 Sept 2011Pool Mill128741
39.9 cm7 Aug 1996Nunnery110408
39.9 cm3 Aug 1996Linton Stepping Stones110362
39.6 cm4 Aug 1997Strid d/s (Bolton Abbey)110022
39.4 cm25 Jul 2011Appletreewick B (lower site)128891

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
Pool Mill27 Jun 199622 Aug 202418
Tadcaster post 20069 Aug 200620 Aug 20245
Harewood14 Aug 202414 Aug 20241
Netherby (discretionary only)26 Jul 201626 Jul 20161
Ilkley1 Aug 19961 Sept 20149
Linton Stepping Stones3 Aug 19964 Aug 20147
Ulleskelf16 Jul 201416 Jul 20141
Castley18 Jul 199624 Jun 201414
Appletreewick B (lower site)9 Aug 199625 Jul 20119
Tadcaster pre 200624 Jul 199630 Jun 20058
Burley Bypass31 Jul 199614 Jul 20044
Appletreewick A9 Aug 199613 Aug 20032
Addingham8 Aug 199611 Aug 20038
Strid d/s (Bolton Abbey)6 Aug 19967 Aug 20036
Nunnery7 Aug 199628 Jul 20037
Boston Spa19 Jul 199626 Jul 20037
Collingham25 Jul 199713 Aug 19982
U/s of Lobwood Weir2 Aug 19966 Aug 19983

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

1996–2024

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 4,165 measured fish were spread across different length ranges.

Smallest
1.7 cm
Lower quarter
8.9 cm
Median
10.8 cm
Upper quarter
22.8 cm
Largest
44.8 cm

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 →