Flounder · Platichthys flesus

Flounder in the River Brock

Largest measured flounder: 23.5 cm

The largest flounder measured in Environment Agency surveys of the River Brock was 23.5 cm, recorded at Myerscough College on 30 July 2010.

Across 21 measured flounder, the median measured length was 12.1 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 Brock.

See flounder records across England →

Most recent observation12 July 2017Myerscough College · 2 fish

Largest measured flounder: 23.5 cm
Median length: 12.1 cm
Fish measured: 21
Survey locations: 2

Individual EA measurements

Largest measured flounder

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
23.5 cm	30 Jul 2010	Myerscough College	123215
21.9 cm	30 Jul 2010	Myerscough College	123215
21.5 cm	13 Sept 2006	Nearer Light Ash	101330
20.3 cm	30 Jul 2010	Myerscough College	123215
20 cm	13 Sept 2006	Nearer Light Ash	101330
16.5 cm	18 Oct 2004	Myerscough College	82897
15.8 cm	30 Jul 2010	Myerscough College	123215
14 cm	25 Aug 2009	Myerscough College	118530
13 cm	14 Jul 2011	Myerscough College	126982
12.8 cm	12 Jul 2017	Myerscough College	151110

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where flounder were found

Each point marks a survey location with at least one flounder 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 flounder
Myerscough College	18 Oct 2004	12 Jul 2017	8
Nearer Light Ash	24 Aug 1999	13 Sept 2006	3

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

1999–2017

Survey records by year

Each bar shows how many survey visits recorded flounder that year.

199

000

001

002

003

104

105

106

107

008

109

110

111

012

113

014

015

116

117

Fish measured by surveyors

Measured length distribution

See how the 21 measured fish were spread across different length ranges.

Smallest: 6.2 cm
Lower quarter: 9 cm
Median: 12.1 cm
Upper quarter: 16.5 cm
Largest: 23.5 cm

0–99 mm

100–199 mm

200–299 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Brock

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

Brown / sea trout European eel Atlantic salmon Dace Brook lamprey 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 →