RiverFish

Atlantic salmon · Salmo salar

Atlantic salmon in the River Main Barnstaple Yeo

Largest measured atlantic salmon: 18.3 cm

The largest atlantic salmon measured in Environment Agency surveys of the River Main Barnstaple Yeo was 18.3 cm, recorded at New Mills (Sp/WFD) on 6 September 2022.

Across 119 measured atlantic salmon, the median measured length was 11.2 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 Main Barnstaple Yeo.

See atlantic salmon records across England →

Most recent observation19 August 2025Shirwell Mill (Sp) · 3 fish
Largest measured atlantic salmon
18.3 cm
Median length
11.2 cm
Fish measured
119
Survey locations
2

Individual EA measurements

Largest measured atlantic salmon

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

LengthSurvey dateSurvey locationSurvey ID
18.3 cm6 Sept 2022New Mills (Sp/WFD)161606
17.8 cm6 Sept 2022New Mills (Sp/WFD)161606
17.5 cm31 Jul 2012New Mills (Sp/WFD)132545
16.9 cm19 Aug 2025New Mills (Sp/WFD)178418
16.9 cm1 Sept 2021New Mills (Sp/WFD)160456
16.8 cm1 Sept 2021New Mills (Sp/WFD)160456
16.3 cm5 Aug 2010New Mills (Sp/WFD)123324
16.3 cm5 Aug 2010New Mills (Sp/WFD)123324
16.2 cm31 Jul 2012New Mills (Sp/WFD)132545
16 cm31 Jul 2012New Mills (Sp/WFD)132545

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where atlantic salmon were found

Each point marks a survey location with at least one atlantic salmon 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 atlantic salmon
Shirwell Mill (Sp)9 Sept 199619 Aug 20254
New Mills (Sp/WFD)17 Aug 200719 Aug 20257

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

1996–2025

Survey records by year

Each bar shows how many survey visits recorded atlantic salmon that year.

Fish measured by surveyors

Measured length distribution

See how the 119 measured fish were spread across different length ranges.

Smallest
4.2 cm
Lower quarter
8.2 cm
Median
11.2 cm
Upper quarter
13.5 cm
Largest
18.3 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Main Barnstaple Yeo

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

Brown / sea trout Bullhead 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 →