RiverFish

Flounder · Platichthys flesus

Flounder in the River Witham

Largest measured flounder: 27.3 cm

The largest flounder measured in Environment Agency surveys of the River Witham was 27.3 cm, recorded at Tattershall Bridge (Witham) on 23 July 2002.

Across 18 measured flounder, the median measured length was 15.9 cm.

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

See flounder records across England →

Most recent observation25 July 2005Kirks Farm R/B (Witham) · 1 fish
Largest measured flounder
27.3 cm
Median length
15.9 cm
Fish measured
18
Survey locations
7

Individual EA measurements

Largest measured flounder

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

LengthSurvey dateSurvey locationSurvey ID
27.3 cm23 Jul 2002Tattershall Bridge (Witham)72124
27.1 cm15 Jul 2003Kirkstead Bridge (Witham)76906
24.5 cm23 Jul 2002Tattershall Bridge (Witham)72124
23.1 cm3 Aug 1988Chapel Hill (Witham)53133
21.8 cm25 Jul 2005Kirks Farm R/B (Witham)87560
21.3 cm23 Jul 2002Tattershall Bridge (Witham)72124
21.1 cm3 Aug 1988Chapel Hill (Witham)53133
19.5 cm25 Jul 2002Pelhams Land R/B (Witham)72178
16.1 cm13 Jun 2000Stixwould (Witham)59017
15.8 cm23 Jul 2002Tattershall Bridge (Witham)72124

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 surveyedFirst recordedLast recordedVisits finding flounder
Kirks Farm R/B (Witham)5 Jul 199425 Jul 20052
Kirkstead Bridge (Witham)15 Jul 200315 Jul 20031
Pelhams Land R/B (Witham)30 Jun 199425 Jul 20022
Tattershall Bridge (Witham)28 Jun 199423 Jul 20023
Stixwould (Witham)13 Jun 200013 Jun 20001
Tunnard Farm (Witham)2 Jul 19982 Jul 19981
Chapel Hill (Witham)3 Aug 198824 Jun 19982

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

1988–2005

Survey records by year

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

Fish measured by surveyors

Measured length distribution

See how the 18 measured fish were spread across different length ranges.

Smallest
11.3 cm
Lower quarter
13.1 cm
Median
16 cm
Upper quarter
21.7 cm
Largest
27.3 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Witham

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

Dace Roach Gudgeon European eel Perch Pike

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 →