RiverFish

Atlantic salmon · Salmo salar

Atlantic salmon in the Mosedale Beck

Largest measured atlantic salmon: 13.5 cm

The largest atlantic salmon measured in Environment Agency surveys of the Mosedale Beck was 13.5 cm, recorded at 1554.00 Wallthwaite, Mosedale Beck on 7 August 2025.

Across 127 measured atlantic salmon, the median measured length was 7.6 cm.

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

See atlantic salmon records across England →

Most recent observation7 August 20251554.00 Wallthwaite, Mosedale Beck · 33 fish
Largest measured atlantic salmon
13.5 cm
Median length
7.6 cm
Fish measured
127
Survey locations
1

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
13.5 cm7 Aug 20251554.00 Wallthwaite, Mosedale Beck177733
13.5 cm7 Aug 20251554.00 Wallthwaite, Mosedale Beck177733
13.5 cm6 Sept 20211554.00 Wallthwaite, Mosedale Beck160346
13.4 cm6 Sept 20211554.00 Wallthwaite, Mosedale Beck160346
13.3 cm6 Sept 20211554.00 Wallthwaite, Mosedale Beck160346
13.2 cm6 Sept 20211554.00 Wallthwaite, Mosedale Beck160346
13 cm7 Aug 20251554.00 Wallthwaite, Mosedale Beck177733
13 cm7 Aug 20251554.00 Wallthwaite, Mosedale Beck177733
13 cm6 Sept 20211554.00 Wallthwaite, Mosedale Beck160346
13 cm6 Sept 20211554.00 Wallthwaite, Mosedale Beck160346

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
1554.00 Wallthwaite, Mosedale Beck26 Jul 20027 Aug 202510

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

2002–2025

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 127 measured fish were spread across different length ranges.

Smallest
5.5 cm
Lower quarter
6.9 cm
Median
7.6 cm
Upper quarter
10 cm
Largest
13.5 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Mosedale Beck

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

Brown / sea trout

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 →