Grayling · Thymallus thymallus

Grayling in the River Henmore Book

Largest measured grayling: 31.5 cm

The largest grayling measured in Environment Agency surveys of the River Henmore Book was 31.5 cm, recorded at Sturston Mill on 13 March 1998.

Across 76 measured grayling, the median measured length was 14.6 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 Henmore Book.

See grayling records across England →

Most recent observation6 May 1998Ashbourne · 2 fish

Largest measured grayling: 31.5 cm
Median length: 14.6 cm
Fish measured: 76
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.

Length	Survey date	Survey location	Survey ID
31.5 cm	13 Mar 1998	Sturston Mill	5229
30.1 cm	26 Jan 1993	Agnes Meadow	4893
29.8 cm	26 Jan 1993	Agnes Meadow	4893
29.7 cm	13 Mar 1998	Sturston Mill	5229
29.5 cm	26 Jan 1993	Agnes Meadow	4893
29.4 cm	26 Jan 1993	Agnes Meadow	4893
28.1 cm	2 Mar 1993	Sturston Mill	4891
27.5 cm	26 Jan 1993	Agnes Meadow	4893
27.4 cm	13 Mar 1998	Sturston Mill	5229
26.6 cm	13 Mar 1998	Sturston Mill	5229

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
Ashbourne	2 Mar 1993	6 May 1998	2
Sturston Mill	2 Mar 1993	13 Mar 1998	2
Dole'S Farm Clifton	20 Apr 1993	20 Apr 1993	1
Agnes Meadow	26 Jan 1993	26 Jan 1993	1

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

1993–1998

Survey records by year

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

493

094

095

096

097

298

Fish measured by surveyors

Measured length distribution

See how the 76 measured fish were spread across different length ranges.

Smallest: 8.3 cm
Lower quarter: 11 cm
Median: 14.6 cm
Upper quarter: 20.6 cm
Largest: 31.5 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 Henmore Book

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 →