Flounder · Platichthys flesus

Flounder in the Old West River

Largest measured flounder: 28.3 cm

The largest flounder measured in Environment Agency surveys of the Old West River was 28.3 cm, recorded at Weathersome Common on 25 October 1991.

Across 36 measured flounder, the median measured length was 10.9 cm.

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

See flounder records across England →

Most recent observation30 September 2003Hermitage Marina · 1 fish

Largest measured flounder: 28.3 cm
Median length: 10.9 cm
Fish measured: 36
Survey locations: 3

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
28.3 cm	25 Oct 1991	Weathersome Common	29975
27.3 cm	26 Jul 1988	Weathersome Common	29967
27.3 cm	5 Jul 1988	Flat Bridge Farm	29968
25.8 cm	5 Jul 1988	Flat Bridge Farm	29968
23.8 cm	28 Jul 1993	Weathersome Common	29983
23.3 cm	5 Jul 1988	Flat Bridge Farm	29968
15.8 cm	4 Jul 1988	Hermitage Marina	29966
15.3 cm	26 Jul 1988	Weathersome Common	29967
14.3 cm	9 Sept 1997	Weathersome Common	29999
13.3 cm	28 Jul 1993	Weathersome Common	29983

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
Hermitage Marina	4 Jul 1988	30 Sept 2003	4
Weathersome Common	26 Jul 1988	9 Sept 1997	4
Flat Bridge Farm	5 Jul 1988	5 Jul 1988	1

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

1988–2003

Survey records by year

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

388

089

090

291

092

293

094

095

096

197

098

099

000

001

002

103

Fish measured by surveyors

Measured length distribution

See how the 36 measured fish were spread across different length ranges.

Smallest: 5.8 cm
Lower quarter: 7.2 cm
Median: 10.9 cm
Upper quarter: 13.6 cm
Largest: 28.3 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 Old West River

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

Perch Roach Pike Bitterling Tench Bleak

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 →