RiverFish

Bleak · Alburnus alburnus

Bleak in the River Witham

Largest measured bleak: 18.3 cm

The largest bleak measured in Environment Agency surveys of the River Witham was 18.3 cm, recorded at Tattershall Bridge (Witham) on 13 July 2005.

Across 1,957 measured bleak, the median measured length was 10.3 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 bleak records across England →

Most recent observation23 August 2023Haddington Bridge · 2 fish
Largest measured bleak
18.3 cm
Median length
10.3 cm
Fish measured
1,957
Survey locations
17

Individual EA measurements

Largest measured bleak

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

LengthSurvey dateSurvey locationSurvey ID
18.3 cm13 Jul 2005Tattershall Bridge (Witham)87003
17.9 cm7 Jun 1988North Hykeham Bridge53108
17.5 cm11 Jul 1985Thorpe Tilney Road (Witham)53032
16.2 cm27 Jul 2002Kirkstead Bridge (Witham)72051
16 cm23 Jun 1994Kirkstead Bridge (Witham)53288
15.8 cm21 Jun 1994Southrey (Witham)53286
15.6 cm16 Jul 2003Tattershall Bridge (Witham)76961
15.6 cm16 Aug 1985Haddington Bridge53006
15.5 cm18 Sept 2007Upstream Bracebridge Bridge107886
15.5 cm9 Jun 1998Upstream R/B Bardney Bridge (Witham)53397

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

Explore the river

Where bleak were found

Each point marks a survey location with at least one bleak 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 bleak
Haddington Bridge16 Aug 198523 Aug 202310
Upstream Bracebridge Bridge16 Jun 198810 May 201714
Ex Power Station (Witham)1 Jul 198519 Jun 20148
Tattershall Bridge (Witham)15 Jul 19853 Sept 20095
Five Mile House Bridge (Witham)3 Jul 198518 Jul 20062
Kirkstead Bridge (Witham)10 Jul 198515 Jul 20035
Short Ferry (Witham)4 Jul 198530 Jul 20023
Stixwould (Witham)9 Jul 198513 Jun 20003
Upstream R/B Bardney Bridge (Witham)9 Jun 19989 Jun 19981
Dixon Street16 Jun 198824 Sept 19973
North Hykeham Bridge23 Oct 198511 Aug 19944
Southrey (Witham)8 Jul 198521 Jun 19944
Downstream R/B Beet Factory (Witham)25 Jul 198520 Jun 19943
Greetwell Hall (Witham)17 Sept 199117 Sept 19911
Tunnard Farm (Witham)8 Aug 19888 Aug 19881
Kirks Farm R/B (Witham)22 Jul 198522 Jul 19851
Thorpe Tilney Road (Witham)11 Jul 198511 Jul 19851

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

1985–2023

Survey records by year

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

Fish measured by surveyors

Measured length distribution

See how the 1,957 measured fish were spread across different length ranges.

Smallest
1.8 cm
Lower quarter
9.4 cm
Median
10.3 cm
Upper quarter
11.6 cm
Largest
18.3 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 →