RiverFish

Brown / sea trout · Salmo trutta

Brown / sea trout in the River Swale tributaries

Largest measured brown / sea trout: 55.2 cm

The largest brown / sea trout measured in Environment Agency surveys of the River Swale tributaries was 55.2 cm, recorded at Gunnerside Gill at Gunnerside on 23 August 2004.

Across 1,879 measured brown / sea trout, the median measured length was 11 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 Swale tributaries.

See brown / sea trout records across England →

Most recent observation4 September 2024Gunnerside Gill at Gunnerside · 36 fish
Largest measured brown / sea trout
55.2 cm
Median length
11 cm
Fish measured
1,879
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
55.2 cm23 Aug 2004Gunnerside Gill at Gunnerside81708
30.9 cm29 Aug 2006Gunnerside Gill at Gunnerside101249
30.7 cm25 Aug 2016Birdforth / Green's Beck149110
27.4 cm2 Sept 2013Gunnerside Gill at Gunnerside138476
27.3 cm14 Jun 2010Colburn Beck at Hipswell122911
27.2 cm3 Sept 2002Gunnerside Gill at Gunnerside72721
27.2 cm29 Aug 2002Oxnop Beck u/s A68472727
26.5 cm29 Aug 2006Gunnerside Gill at Gunnerside101249
26.3 cm24 Aug 2004Oxnop Beck u/s A68481815
25.9 cm7 Sept 2005Gunnerside Gill at Gunnerside86630

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
Oxnop Beck u/s A68429 Aug 20024 Sept 202417
Gunnerside Gill at Gunnerside3 Sept 20024 Sept 202418
Colburn Beck at Hipswell2 Jun 200528 Sept 20224
Clapgate Gill nr Park Top2 Jun 200528 Sept 20224
Whitsundale Beck at Ravenseat6 Jun 200514 Sept 20224
Cundall Beck25 Aug 201625 Aug 20161
Birdforth / Green's Beck25 Aug 201625 Aug 20161
Brough / Scotton Beck9 Aug 20169 Aug 20161
Grinton Gill at Grinton1 Jun 20054 Aug 20163
Stonesdale Beck nr Low Frith6 Jun 20051 Aug 20163
Great Sledale Beck at Stone House1 Aug 20161 Aug 20161
East Gill nr Shot Lathe6 Jun 20056 Jun 20051
Rountin Gill at B62703 Jun 20053 Jun 20051

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

2002–2024

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 1,879 measured fish were spread across different length ranges.

Smallest
2.5 cm
Lower quarter
7.3 cm
Median
11 cm
Upper quarter
13.7 cm
Largest
55.2 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Swale tributaries

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

Bullhead Minnow Stone loach 3-spined stickleback Chub

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 →