Grayling · Thymallus thymallus

Grayling in the River Esk

Largest measured grayling: 25.8 cm

The largest grayling measured in Environment Agency surveys of the River Esk was 25.8 cm, recorded at 6.0 Toll Road, Grosmont ESK/SA/Q/003 on 21 September 2004.

Across 18 measured grayling, the median measured length was 9.9 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 Esk.

See grayling records across England →

Most recent observation24 September 20116.2 Grosmont Farm LHS · 2 fish

Largest measured grayling: 25.8 cm
Median length: 9.9 cm
Fish measured: 18
Survey locations: 2

Individual EA measurements

Largest measured grayling

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
25.8 cm	21 Sept 2004	6.0 Toll Road, Grosmont ESK/SA/Q/003	84320
23.7 cm	24 Aug 2011	6.0 Toll Road, Grosmont ESK/SA/Q/003	128629
21.3 cm	24 Aug 2011	6.0 Toll Road, Grosmont ESK/SA/Q/003	128629
11.8 cm	22 Oct 2008	6.0 Toll Road, Grosmont ESK/SA/Q/003	116545
11.1 cm	24 Sept 2011	6.2 Grosmont Farm LHS	128499
10.4 cm	16 Sept 2010	6.0 Toll Road, Grosmont ESK/SA/Q/003	124451
10.4 cm	6 Oct 2009	6.0 Toll Road, Grosmont ESK/SA/Q/003	119856
10.1 cm	1 Oct 2003	6.0 Toll Road, Grosmont ESK/SA/Q/003	78533
10.1 cm	16 Oct 2001	6.0 Toll Road, Grosmont ESK/SA/Q/003	20441
9.8 cm	24 Sept 2011	6.2 Grosmont Farm LHS	128499

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 surveyed	First recorded	Last recorded	Visits finding grayling
6.2 Grosmont Farm LHS	24 Sept 2011	24 Sept 2011	1
6.0 Toll Road, Grosmont ESK/SA/Q/003	16 Oct 2001	24 Aug 2011	8

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

2001–2011

Survey records by year

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

101

102

103

104

005

006

007

108

109

110

211

Fish measured by surveyors

Measured length distribution

See how the 18 measured fish were spread across different length ranges.

Smallest: 7.2 cm
Lower quarter: 9.1 cm
Median: 10 cm
Upper quarter: 10.9 cm
Largest: 25.8 cm

0–99 mm

100–199 mm

200–299 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Esk

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

Brown / sea trout Atlantic salmon Stone loach European eel Minnow 3-spined stickleback

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 →