Brown / sea trout · Salmo trutta

Brown / sea trout in the Darley Beck

Largest measured brown / sea trout: 30.3 cm

The largest brown / sea trout measured in Environment Agency surveys of the Darley Beck was 30.3 cm, recorded at Darley Beck Upstream disused Railway line on 8 September 2004.

Across 395 measured brown / sea trout, the median measured length was 14 cm.

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

See brown / sea trout records across England →

Most recent observation21 August 2025Darley Beck Upstream disused Railway line · 19 fish

Largest measured brown / sea trout: 30.3 cm
Median length: 14 cm
Fish measured: 395
Survey locations: 2

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
30.3 cm	8 Sept 2004	Darley Beck Upstream disused Railway line	82207
30.2 cm	4 Sept 2008	Darley Beck Upstream disused Railway line	116549
29.7 cm	21 Aug 2019	Darley Beck Upstream disused Railway line	155523
29.7 cm	27 Sept 2009	Darley Beck Upstream disused Railway line	120119
29.6 cm	5 Sept 2003	Darley Beck Upstream disused Railway line	78501
27.9 cm	18 Aug 2010	Darley Beck Upstream disused Railway line	124156
27.3 cm	18 Aug 2010	Darley Beck Upstream disused Railway line	124156
26.7 cm	29 Aug 2002	Darley Beck Upstream disused Railway line	68300
26.6 cm	18 Aug 2010	Darley Beck Upstream disused Railway line	124156
26.4 cm	5 Sept 2003	Darley Beck Upstream disused Railway line	78501

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
Darley Beck Upstream disused Railway line	29 Aug 2002	21 Aug 2025	15
Darley Beck at Folly Gill Bridge	6 Jun 2005	6 Jun 2005	1

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

2002–2025

Survey records by year

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

102

103

104

205

006

107

108

109

110

111

012

113

014

115

016

117

118

119

020

021

022

023

024

125

Fish measured by surveyors

Measured length distribution

See how the 395 measured fish were spread across different length ranges.

Smallest: 4.2 cm
Lower quarter: 8 cm
Median: 14 cm
Upper quarter: 17 cm
Largest: 30.3 cm

0–99 mm

155

100–199 mm

186

200–299 mm

300–399 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Darley Beck

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

Bullhead Stone loach Minnow

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 →