RiverFish

Brown / sea trout · Salmo trutta

Brown / sea trout in the River Twiss

Largest measured brown / sea trout: 24.6 cm

The largest brown / sea trout measured in Environment Agency surveys of the River Twiss was 24.6 cm, recorded at Waterfalls car park on 4 September 2007.

Across 471 measured brown / sea trout, the median measured length was 9.2 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 Twiss.

See brown / sea trout records across England →

Most recent observation7 August 2025Waterfalls car park · 65 fish
Largest measured brown / sea trout
24.6 cm
Median length
9.2 cm
Fish measured
471
Survey locations
1

Individual EA measurements

Largest measured brown / sea trout

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

LengthSurvey dateSurvey locationSurvey ID
24.6 cm4 Sept 2007Waterfalls car park106612
21 cm15 Jul 2002Waterfalls car park73717
20.5 cm26 Sept 1997Waterfalls car park112556
20 cm5 Jul 2019Waterfalls car park154780
20 cm11 Sept 1991Waterfalls car park115136
19.2 cm5 Jul 2019Waterfalls car park154780
19 cm9 Aug 2023Waterfalls car park162916
19 cm26 Sept 1997Waterfalls car park112556
19 cm11 Sept 1991Waterfalls car park115136
18.1 cm7 Aug 2025Waterfalls car park179974

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

Explore the river

Where brown / sea trout were found

Each point marks a survey location with at least one brown / sea trout 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 brown / sea trout
Waterfalls car park11 Sept 19917 Aug 202510

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

1991–2025

Survey records by year

Each bar shows how many survey visits recorded brown / sea trout that year.

Fish measured by surveyors

Measured length distribution

See how the 471 measured fish were spread across different length ranges.

Smallest
3.5 cm
Lower quarter
7 cm
Median
9.2 cm
Upper quarter
12.5 cm
Largest
24.6 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.

Atlantic salmon 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 →