RiverFish

Atlantic salmon · Salmo salar

Atlantic salmon in the River Marron

Largest measured atlantic salmon: 14.6 cm

The largest atlantic salmon measured in Environment Agency surveys of the River Marron was 14.6 cm, recorded at 1704.00 Calva Hall, River Marron on 3 September 2024.

Across 568 measured atlantic salmon, the median measured length was 7.2 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 Marron.

See atlantic salmon records across England →

Most recent observation11 August 20251704.00 Calva Hall, River Marron · 139 fish
Largest measured atlantic salmon
14.6 cm
Median length
7.2 cm
Fish measured
568
Survey locations
8

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
14.6 cm3 Sept 20241704.00 Calva Hall, River Marron167094
14.3 cm3 Sept 20241704.00 Calva Hall, River Marron167094
14.2 cm11 Aug 20251704.00 Calva Hall, River Marron178430
14 cm20 Jul 20231702.00 Ullock, River Marron162708
13.5 cm8 Jul 20211704.00 Calva Hall, River Marron160018
13.4 cm11 Aug 20251704.00 Calva Hall, River Marron178430
13.4 cm11 Aug 20251704.00 Calva Hall, River Marron178430
13.4 cm18 Jul 20191704.00 Calva Hall, River Marron155042
13.3 cm21 Jul 20231704.00 Calva Hall, River Marron162705
13.3 cm18 Jul 20191704.00 Calva Hall, River Marron155042

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
1704.00 Calva Hall, River Marron24 Jul 200211 Aug 202517
1715.00 Snary Beck, River Marron4 Aug 20033 Sept 20248
1728.00 Lostrigg Beck, River Marron4 Aug 200321 Jul 20236
1700.00 Asby, River Marron4 Aug 200321 Jul 20237
1702.00 Ullock, River Marron8 Aug 200320 Jul 20236
1701.00 nr Wright Green, River Marron4 Aug 200320 Jul 20237
1718.00 Black Beck, River Marron8 Aug 20031 Sept 20165
1713.95 Wisenholme Beck near Mill House4 Aug 200328 Aug 20082

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 568 measured fish were spread across different length ranges.

Smallest
4.1 cm
Lower quarter
6.5 cm
Median
7.2 cm
Upper quarter
8.1 cm
Largest
14.6 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Marron

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

Brown / sea trout 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 →