RiverFish

Brown / sea trout · Salmo trutta

Brown / sea trout in the River Rothay

Largest measured brown / sea trout: 17.8 cm

The largest brown / sea trout measured in Environment Agency surveys of the River Rothay was 17.8 cm, recorded at 333.01 PTC Tongue Gill CPUE on 12 July 2024.

Across 241 measured brown / sea trout, the median measured length was 7.4 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 Rothay.

See brown / sea trout records across England →

Most recent observation31 July 2025327.00 PTC Scandale Beck · 1 fish
Largest measured brown / sea trout
17.8 cm
Median length
7.4 cm
Fish measured
241
Survey locations
13

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
17.8 cm12 Jul 2024333.01 PTC Tongue Gill CPUE166874
17.2 cm17 Sept 2019327.00 PTC Scandale Beck155484
16.8 cm6 Sept 2021327.00 PTC Scandale Beck160216
16.5 cm11 Aug 2023327.95 Rothay ds Pelter Bridge CPUE163006
15.8 cm9 Jul 2025332.00 Upstream Grasmere178121
15.5 cm14 Sept 2023333.01 PTC Tongue Gill CPUE163275
15.1 cm11 Aug 2023332.01 Rothay us Grasmere CPUE163005
14.9 cm14 Sept 2023333.01 PTC Tongue Gill CPUE163275
14.6 cm14 Sept 2023333.01 PTC Tongue Gill CPUE163275
14.6 cm12 Sept 2023327.01 PTC Scandale Beck CPUE163272

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
327.00 PTC Scandale Beck16 Jul 199231 Jul 202516
332.00 Upstream Grasmere24 Aug 19929 Jul 20257
327.95 Rothay ds Pelter Bridge CPUE11 Aug 202312 Aug 20242
327.01 PTC Scandale Beck CPUE12 Sept 202312 Aug 20242
326.10 Opposite STW CPUE29 Aug 20231 Aug 20242
330.01 Rothay us White Moss CPUE17 Jul 202417 Jul 20241
333.01 PTC Tongue Gill CPUE14 Sept 202312 Jul 20242
332.01 Rothay us Grasmere CPUE11 Aug 202312 Jul 20242
330.00 White Moss2 Sept 199623 Aug 20022
Ghyll Foot17 Aug 19899 Sept 19963
Rothay Bridge26 Aug 19926 Sept 19962
Fox Ghyll5 Oct 19924 Sept 19962
US Rydal Bridge15 Jul 19922 Sept 19962

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

1989–2025

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 241 measured fish were spread across different length ranges.

Smallest
4.5 cm
Lower quarter
6.7 cm
Median
7.4 cm
Upper quarter
8.5 cm
Largest
17.8 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Rothay

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 →