RiverFish

Atlantic salmon · Salmo salar

Atlantic salmon in the River Twiss

Largest measured atlantic salmon: 16 cm

The largest atlantic salmon measured in Environment Agency surveys of the River Twiss was 16 cm, recorded at Waterfalls car park on 11 September 1991.

Across 280 measured atlantic salmon, the median measured length was 10 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 Twiss.

See atlantic salmon records across England →

Most recent observation5 July 2019Waterfalls car park · 31 fish
Largest measured atlantic salmon
16 cm
Median length
10 cm
Fish measured
280
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
16 cm11 Sept 1991Waterfalls car park115136
14.8 cm5 Jul 2019Waterfalls car park154780
14 cm11 Sept 1991Waterfalls car park115136
14 cm11 Sept 1991Waterfalls car park115136
13.5 cm26 Sept 1997Waterfalls car park112556
13.5 cm11 Sept 1991Waterfalls car park115136
13.5 cm11 Sept 1991Waterfalls car park115136
13.5 cm11 Sept 1991Waterfalls car park115136
13.5 cm11 Sept 1991Waterfalls car park115136
13.2 cm4 Sept 2007Waterfalls car park106612

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
Waterfalls car park11 Sept 19915 Jul 20197

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

1991–2019

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 280 measured fish were spread across different length ranges.

Smallest
5 cm
Lower quarter
7 cm
Median
10 cm
Upper quarter
11.2 cm
Largest
16 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Twiss

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 →