RiverFish

Grayling · Thymallus thymallus

Grayling in the River Lambourn

Largest measured grayling: 45.2 cm

The largest grayling measured in Environment Agency surveys of the River Lambourn was 45.2 cm, recorded at Easton Lodge on 20 October 2000.

Across 1,407 measured grayling, the median measured length was 19.8 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 Lambourn.

See grayling records across England →

Most recent observation21 October 2025Easton Lodge · 3 fish
Largest measured grayling
45.2 cm
Median length
19.8 cm
Fish measured
1,407
Survey locations
10

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
45.2 cm20 Oct 2000Easton Lodge105311
45 cm8 Nov 2012Westbrook Farm135098
44.5 cm10 Nov 2011Westbrook Farm129717
44.3 cm10 Nov 2011Westbrook Farm129717
44.2 cm9 Nov 2010Westbrook Farm125491
43.9 cm14 Nov 2007Easton Lodge108415
43.4 cm9 Nov 2010Westbrook Farm125491
43.2 cm11 Nov 2002Easton Lodge72978
43.1 cm31 Oct 2002Westbrook Farm73260
42.4 cm14 Nov 2007Easton Lodge108415

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
Easton Lodge20 Oct 200021 Oct 202520
Moorbridge Farm1 Nov 20017 Nov 20239
Upstream Shaw Gauging Station22 May 201225 Jun 20143
Woodspeen16 Mar 200630 Apr 20142
Upstream Shaw Footbridge24 Nov 200819 Nov 20136
Upstream Old Railway Bridge24 Nov 200819 Nov 20136
Upstream Old A3424 Nov 200819 Nov 20136
Westbrook Farm20 Oct 20007 Nov 201313
East Shefford24 Mar 200624 Mar 20061
Upstream of confluence16 Mar 200616 Mar 20061

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

2000–2025

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 1,407 measured fish were spread across different length ranges.

Smallest
6.7 cm
Lower quarter
14.7 cm
Median
19.8 cm
Upper quarter
25.5 cm
Largest
45.2 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Lambourn

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

Brown / sea trout Bullhead Pike Minnow Atlantic salmon 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 →