RiverFish

Brown / sea trout · Salmo trutta

Brown / sea trout in the River Thursgill

Largest measured brown / sea trout: 25 cm

The largest brown / sea trout measured in Environment Agency surveys of the River Thursgill was 25 cm, recorded at 683.00 Thursgill #3 on 11 July 2025.

Across 82 measured brown / sea trout, the median measured length was 8.1 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 Thursgill.

See brown / sea trout records across England →

Most recent observation11 July 2025683.00 Thursgill #3 · 27 fish
Largest measured brown / sea trout
25 cm
Median length
8.1 cm
Fish measured
82
Survey locations
3

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
25 cm11 Jul 2025683.00 Thursgill #3178134
23.4 cm14 Jul 2023683.00 Thursgill #3162603
17.6 cm14 Jul 2023683.00 Thursgill #3162603
16.7 cm11 Jul 2025683.00 Thursgill #3178134
14.7 cm14 Jul 2023683.00 Thursgill #3162603
14.4 cm14 Jul 2023683.00 Thursgill #3162603
13.4 cm14 Jul 2023683.00 Thursgill #3162603
13.3 cm14 Jul 2023683.00 Thursgill #3162603
13.1 cm14 Jul 2023683.00 Thursgill #3162603
12.9 cm14 Jul 2023683.00 Thursgill #3162603

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
683.00 Thursgill #32 Aug 199311 Jul 20259
Thursgill #22 Aug 19931 Sept 19993
Grayrigg Hall Farm20 Jul 19934 Aug 19992

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

1993–2025

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 82 measured fish were spread across different length ranges.

Smallest
5.4 cm
Lower quarter
7.3 cm
Median
8.1 cm
Upper quarter
9 cm
Largest
25 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Thursgill

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

Atlantic salmon

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 →