RiverFish

Grayling · Thymallus thymallus

Grayling in the River Kennet

Largest measured grayling: 60 cm

The largest grayling measured in Environment Agency surveys of the River Kennet was 60 cm, recorded at Harbrook,Ramsbury on 17 November 2005.

Across 1,036 measured grayling, the median measured length was 21.2 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 Kennet.

See grayling records across England →

Most recent observation9 October 2025Gunter Stream - Barton Court · 1 fish
Largest measured grayling
60 cm
Median length
21.2 cm
Fish measured
1,036
Survey locations
21

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
60 cm17 Nov 2005Harbrook,Ramsbury87829
43.2 cm4 Oct 2000Werg Mill, Mildenhall75966
42 cm30 Sept 1999Sheepdrove Bend75977
40.8 cm15 Sept 2015Upstream of Gauging weir Marlborough146434
40.6 cm30 Sept 1999Sheepdrove Bend75977
40.6 cm30 Sept 1999Sheepdrove Bend75977
40.4 cm16 Nov 2005Hoppers Lane,Axford87819
39.5 cm15 Sept 2015Upstream of Gauging weir Marlborough146434
39.5 cm28 Sept 2000Howe Mill75789
38.7 cm15 Sept 2015Upstream of Gauging weir Marlborough146434

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
Gunter Stream - Barton Court9 Oct 20259 Oct 20251
Priors Moor Ditch - Eel6 Oct 202325 Sept 20252
Howe Mill - Eel18 Oct 202311 Oct 20242
North Ditch - Eel8 Oct 20248 Oct 20241
Half Water - Eel17 Oct 20238 Oct 20242
Northcroft - Eel27 Sept 202427 Sept 20241
Hambridge11 Nov 200430 Oct 20197
Willow Stream - Barton Court16 Mar 200429 Oct 201913
Bulls lock- Widmead lock1 Nov 201013 Oct 20152
Upstream of Gauging weir Marlborough15 Sept 201515 Sept 20151
Pipe Stream - Wilderness31 Oct 200130 Mar 20105
Howe Mill28 Sept 200016 Nov 20094
Middle Cut d/s Duffers Pool - Wilderness26 Feb 200826 Feb 20081
Harbrook,Ramsbury28 Sept 200017 Nov 20054
Hoppers Lane,Axford16 Nov 200516 Nov 20051
Elcot15 Nov 200515 Nov 20051
Aldershot Stream4 Nov 20044 Nov 20041
Waterside Farm2 Apr 200325 Oct 20042
White Bridge - Axford1 Oct 200031 Oct 20022
Werg Mill, Mildenhall28 Sept 19994 Oct 20002
Sheepdrove Bend30 Sept 199930 Sept 19991

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

1999–2025

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 1,036 measured fish were spread across different length ranges.

Smallest
9.5 cm
Lower quarter
13.4 cm
Median
21.2 cm
Upper quarter
25.5 cm
Largest
60 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Kennet

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

Pike Brown / sea trout Chub Dace Perch Roach

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 →