Brown / sea trout · Salmo trutta

Brown / sea trout in the Swanside Beck

Largest measured brown / sea trout: 55 cm

The largest brown / sea trout measured in Environment Agency surveys of the Swanside Beck was 55 cm, recorded at Smithies Bridge (A59) on 20 June 2002.

Across 1,544 measured brown / sea trout, the median measured length was 11.9 cm.

RiverFish uses Environment Agency survey measurements rather than rod-and-line angling records. These figures show fish measured during EA surveys of the Swanside Beck.

See brown / sea trout records across England →

Most recent observation2 June 2026Smithies Bridge (A59) · 32 fish

Largest measured brown / sea trout: 55 cm
Median length: 11.9 cm
Fish measured: 1,544
Survey locations: 5

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.

Length	Survey date	Survey location	Survey ID
55 cm	20 Jun 2002	Smithies Bridge (A59)	68481
46 cm	26 Oct 2012	Smithies Bridge (A59)	134453
45 cm	26 Oct 2012	Smithies Bridge (A59)	134453
45 cm	18 Oct 2006	Smithies Bridge (A59)	101973
41.1 cm	26 Oct 2012	Smithies Bridge (A59)	134453
41 cm	18 Oct 2006	Smithies Bridge (A59)	101973
38.9 cm	16 Sept 2009	Smithies Bridge (A59)	118963
37.5 cm	7 Oct 1992	ptc Ings Beck	112433
36.3 cm	26 Oct 2012	Smithies Bridge (A59)	134453
35 cm	16 Sept 2009	Smithies Bridge (A59)	118963

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 surveyed	First recorded	Last recorded	Visits finding brown / sea trout
Smithies Bridge (A59)	4 Aug 1986	2 Jun 2026	27
Nr Cowgill Farm	5 Aug 1986	12 Sept 2008	8
Nr Stopper Lane	6 Oct 1992	31 Jul 2008	5
ptc Ings Beck	29 Aug 1991	23 Sept 2003	4
Upstream Railway Bridge	28 Sept 1987	11 Sept 1995	2

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

1986–2026

Survey records by year

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

286

387

088

089

090

391

392

093

094

495

096

097

498

099

000

001

102

403

104

105

106

107

308

109

110

111

112

113

114

115

116

117

118

119

020

021

122

123

124

025

126

Fish measured by surveyors

Measured length distribution

See how the 1,544 measured fish were spread across different length ranges.

Smallest: 3.2 cm
Lower quarter: 8 cm
Median: 11.9 cm
Upper quarter: 14.5 cm
Largest: 55 cm

0–99 mm

621

100–199 mm

861

200–299 mm

300–399 mm

400–499 mm

500–599 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Swanside Beck

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

Atlantic salmon European eel Brook lamprey

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 →