RiverFish

Atlantic salmon · Salmo salar

Atlantic salmon in the River Allen (East & West)

Largest measured atlantic salmon: 16.6 cm

The largest atlantic salmon measured in Environment Agency surveys of the River Allen (East & West) was 16.6 cm, recorded at River Allen at Ridley Hall on 24 July 2014.

Across 2,014 measured atlantic salmon, the median measured length was 7 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 Allen (East & West).

See atlantic salmon records across England →

Most recent observation3 July 2025River east Allen at Catton Bridge · 452 fish
Largest measured atlantic salmon
16.6 cm
Median length
7 cm
Fish measured
2,014
Survey locations
5

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
16.6 cm24 Jul 2014River Allen at Ridley Hall141880
16.1 cm30 Aug 2023River east Allen at Catton Bridge164382
16 cm9 Aug 2022River east Allen at Catton Bridge161711
15.6 cm3 Jul 2025River east Allen at Catton Bridge177197
15.5 cm30 Aug 2005River east Allen at Wide Eals87199
15.4 cm3 Aug 2017River Allen at Ridley Hall151197
15.3 cm5 Sept 2019River east Allen at Catton Bridge155531
15.1 cm3 Jul 2025River east Allen at Catton Bridge177197
15 cm5 Sept 2019River east Allen at Catton Bridge155531
14.8 cm24 Jul 2014River east Allen at Catton Bridge141879

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
River east Allen at Catton Bridge4 Sept 19953 Jul 202514
River Allen at Ridley Hall31 Aug 200525 Jul 202411
West Allen at ninebanks16 Jul 200816 Jul 20081
River east Allen at Wide Eals30 Aug 200530 Aug 20051
River Allen at Plankey Mill27 Jul 199527 Jul 19951

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

1995–2025

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 2,014 measured fish were spread across different length ranges.

Smallest
3.4 cm
Lower quarter
5.7 cm
Median
7 cm
Upper quarter
10.9 cm
Largest
16.6 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Allen (East & West)

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

Brown / sea trout Stone loach European eel Minnow

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 →