RiverFish

Brown / sea trout · Salmo trutta

Brown / sea trout in the River Allen

Largest measured brown / sea trout: 49.2 cm

The largest brown / sea trout measured in Environment Agency surveys of the River Allen was 49.2 cm, recorded at Downstream Fitches Bridge on 3 October 2007.

Across 3,556 measured brown / sea trout, the median measured length was 15 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 Allen.

See brown / sea trout records across England →

Most recent observation29 July 2025Downstream Fitches Bridge · 62 fish
Largest measured brown / sea trout
49.2 cm
Median length
15 cm
Fish measured
3,556
Survey locations
18

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
49.2 cm3 Oct 2007Downstream Fitches Bridge107919
48 cm14 Aug 2018Downstream Fitches Bridge153045
47.7 cm3 Oct 2007Downstream Fitches Bridge107919
47 cm29 Jul 2025Downstream Fitches Bridge177882
45.5 cm18 May 2006Downstream Wimborne90806
44.7 cm17 Aug 2004Witchampton Mill81483
44.5 cm8 Oct 2014Witchampton Mill143413
44.1 cm11 Aug 2005Witchampton Mill85618
43.3 cm6 Sept 2016Downstream Fitches Bridge149367
42.3 cm11 Jul 2024Witchampton Mill165694

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
Downstream Fitches Bridge26 Jul 200129 Jul 202516
Witchampton Mill28 Oct 20029 Jul 202519
Witchampton Mill Gardens23 Jul 202423 Jul 20241
Downstream Walford Mill Road Bridge30 Jun 202323 Jul 20242
Deans Court30 Jun 202323 Jul 20242
Witchampton New Town28 Aug 201928 Aug 20191
Witchampton Lane Bridge28 Aug 201928 Aug 20191
Victoria Cottages28 Aug 201928 Aug 20191
Upstream Witchampton Lane Bridge28 Aug 201928 Aug 20191
Upstream Hinton Parva28 Aug 201928 Aug 20191
Old Lawn Coppice28 Aug 201928 Aug 20191
Honeybrook Farm28 Aug 201928 Aug 20191
Hinton Parva28 Aug 201928 Aug 20191
Barnsley Farm28 Aug 201928 Aug 20191
Downstream Wimborne27 Jul 20012 Aug 20185
Crichel Mill26 Sept 200322 Aug 20122
US Walford Mill25 Jul 200113 Oct 20062
Wimborne (Somerfield Carpark)13 Oct 200513 Oct 20051

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

2001–2025

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 3,556 measured fish were spread across different length ranges.

Smallest
4 cm
Lower quarter
9.1 cm
Median
15 cm
Upper quarter
19.7 cm
Largest
49.2 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Allen

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

European eel Atlantic salmon Grayling Dace Pike Gudgeon

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 →