Flounder · Platichthys flesus

Flounder in the River Gowy

Largest measured flounder: 21.5 cm

The largest flounder measured in Environment Agency surveys of the River Gowy was 21.5 cm, recorded at Gwgo20 on 23 April 2002.

Across 99 measured flounder, the median measured length was 8.7 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 Gowy.

See flounder records across England →

Most recent observation25 April 2014Gwgo25 · 2 fish

Largest measured flounder: 21.5 cm
Median length: 8.7 cm
Fish measured: 99
Survey locations: 5

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
21.5 cm	23 Apr 2002	Gwgo20	53528
20.5 cm	23 Apr 2002	Gwgo20	53528
18.1 cm	16 Apr 2003	Gwgo25	75848
17.6 cm	22 Jul 1999	Gwgo23	60280
16.7 cm	30 Apr 2009	Gwgo20	117307
16.7 cm	25 Apr 2002	Gwgo25	53534
16.6 cm	22 Apr 2004	Gwgo25	79680
16.5 cm	27 Apr 2005	Gwgo25	84477
15 cm	25 Apr 2002	Gwgo25	53534
15 cm	22 Jul 1999	Gwgo23	60280

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
Gwgo25	25 Apr 2002	25 Apr 2014	8
Gwgo20	23 Apr 2002	30 Apr 2009	2
Gwgo23	22 Jul 1999	22 Jul 1999	1
Go15	22 Jul 1999	22 Jul 1999	1
Go14	8 Jul 1999	8 Jul 1999	1

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

1999–2014

Survey records by year

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

399

000

001

202

103

104

105

106

107

108

109

010

011

012

013

114

Fish measured by surveyors

Measured length distribution

See how the 99 measured fish were spread across different length ranges.

Smallest: 1.5 cm
Lower quarter: 7.1 cm
Median: 8.7 cm
Upper quarter: 10.9 cm
Largest: 21.5 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 Gowy

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

European eel Stone loach 3-spined stickleback Gudgeon Roach Bullhead

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 →