RiverFish

Brown / sea trout · Salmo trutta

Brown / sea trout in the River Witham

Largest measured brown / sea trout: 55 cm

The largest brown / sea trout measured in Environment Agency surveys of the River Witham was 55 cm, recorded at Sleeper Bridge (Witham) on 21 May 2002.

Across 3,760 measured brown / sea trout, the median measured length was 24.2 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 brown / sea trout records across England →

Most recent observation13 November 2025Queen Elizabeth Park · 139 fish
Largest measured brown / sea trout
55 cm
Median length
24.2 cm
Fish measured
3,760
Survey locations
29

Individual EA measurements

Largest measured brown / sea trout

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

LengthSurvey dateSurvey locationSurvey ID
55 cm21 May 2002Sleeper Bridge (Witham)59061
53.5 cm21 May 2002Sleeper Bridge (Witham)59061
53.1 cm21 Aug 2023Marston Bridge163364
52.7 cm19 Sept 2011Upstream Elinors Weir128810
51.6 cm18 Jun 1991North Witham53196
50.1 cm22 Apr 2010Upstream Foston Ford121526
49.8 cm27 May 1997A607 Road Bridge53343
49.5 cm21 Aug 2023Marston Bridge163364
49.3 cm4 May 1988Paper Mill53093
49.2 cm7 Jun 2024Marston Bridge166219

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

Explore the river

Where brown / sea trout were found

Each point marks a survey location with at least one brown / sea trout 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 brown / sea trout
Wyndom Park13 Nov 202513 Nov 20251
Queen Elizabeth Park12 Sept 198513 Nov 20255
Belton Park - DS Habitat Site12 Nov 202512 Nov 20251
Marston Bridge16 Sept 19855 Nov 202512
Easton Park30 Sept 19854 Nov 202517
Paper Mill30 Sept 198530 Aug 202314
Great Ponton1 Oct 198525 Aug 202314
Upstream Syston Weir26 Sept 198524 Aug 20239
Sleeper Bridge (Witham)6 Sept 198522 Aug 202318
Cringle Brook8 Oct 20077 Sept 20176
Claypole Bridge17 May 20052 May 20179
Upstream Foston Ford24 Apr 200625 Apr 20176
Belton Park9 Sept 20169 Sept 20161
Maiden Bower Wood - Grange Farm2 Sept 20162 Sept 20161
Easton Lane Road Bridge d/s13 Oct 20152 Sept 20162
Upstream Paper Mill Farm15 Oct 201515 Oct 20151
Long Acre Wood Upstream Cringle Brook Confluence29 Aug 201429 Aug 20141
North Witham18 Jun 199124 Apr 20123
Upstream Elinors Weir23 Sept 198519 Sept 20113
Hougham Mill29 Aug 19852 Sept 20113
Upstream Beckingham Bridge11 Apr 198827 Apr 20062
A607 Road Bridge28 Aug 198523 Apr 20046
Bassingham Upstream Bridge10 Sept 199710 Sept 19971
Claypole B22 Apr 199422 Apr 19941
Marston Mill21 May 199121 May 19911
Kirks Farm R/B (Witham)5 Aug 19885 Aug 19881
Chapel Hill (Witham)24 Jul 19853 Aug 19882
Barkston Bridge25 Sept 19857 Mar 19882
Hougham Mill - Marston Mill4 Sept 19854 Sept 19851

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

1985–2025

Survey records by year

Each bar shows how many survey visits recorded brown / sea trout that year.

Fish measured by surveyors

Measured length distribution

See how the 3,760 measured fish were spread across different length ranges.

Smallest
4.2 cm
Lower quarter
18 cm
Median
24.2 cm
Upper quarter
30.2 cm
Largest
55 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 →