RiverFish

Grayling · Thymallus thymallus

Grayling in the Cod Beck

Largest measured grayling: 30.8 cm

The largest grayling measured in Environment Agency surveys of the Cod Beck was 30.8 cm, recorded at Cod Beck at Dalton on 8 July 2016.

Across 51 measured grayling, the median measured length was 21.7 cm.

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

See grayling records across England →

Most recent observation28 September 2022Cod Beck nr Sowerby (Worlds end Bridge) · 3 fish
Largest measured grayling
30.8 cm
Median length
21.7 cm
Fish measured
51
Survey locations
7

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
30.8 cm8 Jul 2016Cod Beck at Dalton148423
30.2 cm10 Jun 2010Willow Beck at Dalton122928
30.1 cm31 May 2005Isle Beck at Bruce House85425
29.7 cm25 Jul 2005Cod Beck at Dalton86940
28.7 cm8 Jul 2016Cod Beck at Dalton148423
28.5 cm25 Jul 2005Cod Beck at Dalton86940
28.1 cm8 Jul 2016Cod Beck at Dalton148423
26.3 cm10 Jun 2010Broad Beck nr Borrowby122908
25.7 cm31 May 2005Isle Beck at Bruce House85425
25.2 cm31 May 2005Thirkleby at A1985422

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
Cod Beck nr Sowerby (Worlds end Bridge)31 May 200528 Sept 20224
Thirkleby at A1931 May 200524 Aug 20162
Cod Beck at Dalton25 Jul 20058 Jul 20162
Willow Beck at Dalton10 Jun 201010 Jun 20101
Broad Beck nr Borrowby9 Oct 200710 Jun 20102
Isle Beck at Bruce House31 May 200531 May 20051
Cod Beck near Kirby Sigston15 Feb 199515 Feb 19951

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

1995–2022

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 51 measured fish were spread across different length ranges.

Smallest
6.2 cm
Lower quarter
15.4 cm
Median
21.7 cm
Upper quarter
24.7 cm
Largest
30.8 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Cod Beck

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

Brown / sea trout Bullhead Stone loach Minnow Dace European eel

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 →