RiverFish

Brown / sea trout · Salmo trutta

Brown / sea trout in the River Ivel

Largest measured brown / sea trout: 43 cm

The largest brown / sea trout measured in Environment Agency surveys of the River Ivel was 43 cm, recorded at Henlow on 8 October 2025.

Across 25 measured brown / sea trout, the median measured length was 18.3 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 Ivel.

See brown / sea trout records across England →

Most recent observation8 October 2025Henlow · 20 fish
Largest measured brown / sea trout
43 cm
Median length
18.3 cm
Fish measured
25
Survey locations
3

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
43 cm8 Oct 2025Henlow179271
38.8 cm8 Oct 2025Henlow179271
33.4 cm8 Oct 2025Henlow179271
31.7 cm9 Apr 2025DS Iron Bridge176251
31.5 cm8 Oct 2025Henlow179271
28 cm8 Oct 2025Henlow179271
24 cm8 Oct 2025Henlow179271
24 cm8 Oct 2025Henlow179271
22.5 cm8 Oct 2025Henlow179271
22.3 cm29 May 1998Henlow29265

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
Henlow29 May 19988 Oct 20252
DS Iron Bridge9 Apr 20259 Apr 20251
Girtford Weir14 May 201014 May 20101

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

1998–2025

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 25 measured fish were spread across different length ranges.

Smallest
10.2 cm
Lower quarter
11.7 cm
Median
18.3 cm
Upper quarter
24 cm
Largest
43 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Ivel

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

Chub Pike Roach Gudgeon Dace 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 →