Grayling · Thymallus thymallus

Grayling in the River Bourne

Largest measured grayling: 41 cm

The largest grayling measured in Environment Agency surveys of the River Bourne was 41 cm, recorded at Winterbourne Gunner on 27 October 2004.

Across 492 measured grayling, the median measured length was 12.1 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 Bourne.

See grayling records across England →

Most recent observation15 October 2024Bourne at Laverstock · 2 fish

Largest measured grayling: 41 cm
Median length: 12.1 cm
Fish measured: 492
Survey locations: 5

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
41 cm	27 Oct 2004	Winterbourne Gunner	83638
38.1 cm	1 Sept 2004	Hurdcott	82310
37.7 cm	10 Aug 2008	Winterbourne Gunner	116248
37.5 cm	10 Aug 2008	Winterbourne Gunner	116248
37.4 cm	13 Oct 2004	Bourne at St Thomas Bridge	83636
36.9 cm	23 Sept 2003	Bourne at St Thomas Bridge	82627
34.8 cm	2 Sept 2014	Hurdcott	142774
34 cm	15 Oct 2024	Bourne at Laverstock	167595
33.9 cm	12 Sept 2013	Hurdcott	138789
32 cm	26 Sept 2005	Hurdcott	87358

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
Bourne at Laverstock	4 Sept 2001	15 Oct 2024	13
Bourne at St Thomas Bridge	4 Sept 2001	7 Oct 2014	11
Winterbourne Gunner	27 Oct 2004	2 Sept 2014	4
Hurdcott	1 Sept 2004	2 Sept 2014	5
R.Bourne at Millford	21 Apr 2004	21 Apr 2004	1

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

2001–2024

Survey records by year

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

201

102

103

504

405

006

207

308

209

210

111

112

213

414

015

116

017

118

019

020

021

122

023

124

Fish measured by surveyors

Measured length distribution

See how the 492 measured fish were spread across different length ranges.

Smallest: 6.8 cm
Lower quarter: 10.2 cm
Median: 12.1 cm
Upper quarter: 21.2 cm
Largest: 41 cm

0–99 mm

105

100–199 mm

233

200–299 mm

131

300–399 mm

400–499 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Bourne

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

European eel Brown / sea trout Bullhead Minnow Pike Brook lamprey

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 →