RiverFish

Grayling · Thymallus thymallus

Grayling in the Main Avon Sites

Largest measured grayling: 41 cm

The largest grayling measured in Environment Agency surveys of the Main Avon Sites was 41 cm, recorded at Amesbury tank crossing on 10 September 2014.

Across 1,158 measured grayling, the median measured length was 21 cm.

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

See grayling records across England →

Most recent observation29 September 2025Netheravon · 1 fish
Largest measured grayling
41 cm
Median length
21 cm
Fish measured
1,158
Survey locations
30

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
41 cm10 Sept 2014Amesbury tank crossing142804
40 cm10 Sept 2014Amesbury tank crossing142804
39.8 cm10 Sept 2014Downstream Figheldean Bridge142849
39.4 cm4 Oct 2012Amesbury tank crossing134084
38.4 cm10 Sept 2014Amesbury tank crossing142804
36.5 cm4 Oct 2012Amesbury tank crossing134084
36.4 cm10 Sept 2014Amesbury tank crossing142804
36.3 cm3 Jun 2004A1R Salisbury to Kitts Island80010
36.2 cm3 Sept 2014Amesbury d/s Queensbury Bridge142882
35.9 cm4 Oct 2012Amesbury tank crossing134084

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
Netheravon16 Aug 202129 Sept 20252
Amesbury Abbey Weir18 Sept 200829 Sept 20256
Woodgreen- The Shallows25 Sept 202525 Sept 20251
Avon Bridge5 Sept 200129 Aug 202418
Stratford -Sub-Castle7 Aug 201913 Aug 20243
Fifield Downstream Tank Crossing9 Sept 202213 Aug 20242
Ham Carrier5 Sept 200130 Aug 202314
Downstream Figheldean Bridge4 Oct 201225 Aug 20235
Amesbury tank crossing4 Oct 201225 Aug 20234
Salisbury Wetherspoons CPUE17 Aug 202115 Aug 20233
Bugmoor Hatches14 Oct 20046 Sept 20224
Heale House at Netton16 Oct 20125 Sept 20222
Downstream Figheldean Bridge CPUE7 Aug 20195 Sept 20222
River Avon at Maltings Car Park14 Oct 202114 Oct 20211
Upavon Downstream Road Bridge16 Aug 202116 Aug 20211
Middle Woodford Mill16 Aug 202116 Aug 20211
Lake Pump House Spawning Channel16 Aug 202116 Aug 20211
Navigation24 Oct 20118 Aug 20192
Amesbury d/s Queensbury Bridge5 Oct 20123 Sept 20142
Salisbury Wetherspoons12 Sept 201219 Aug 20142
Cuttenham Farm28 Aug 200819 Sept 20132
Great Durnford16 Oct 201216 Oct 20121
A7R Royalty Gt.Weir to Clay Pool18 May 200511 May 20112
A4R Ibsley to Ringwood25 May 20049 May 20114
A1RA Bemerton Farm - EA Boom site4 May 20114 May 20111
A1R Salisbury to Kitts Island3 Jun 20048 May 20084
A5R Ringwood to Bickerley Stream Confluence27 May 200429 Apr 20083
A6R Avon Turn - Winkton20 May 200417 May 20052
A2R Downton-Breamore14 Jun 200413 Apr 20052
Amesbury Abbey22 Apr 200422 Apr 20041

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

2001–2025

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 1,158 measured fish were spread across different length ranges.

Smallest
7.1 cm
Lower quarter
17.5 cm
Median
21 cm
Upper quarter
24.8 cm
Largest
41 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Main Avon Sites

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

Bullhead Minnow Stone loach Brown / sea trout Atlantic salmon 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 →