RiverFish

Brown / sea trout · Salmo trutta

Brown / sea trout in the Walsden Water

Largest measured brown / sea trout: 25.7 cm

The largest brown / sea trout measured in Environment Agency surveys of the Walsden Water was 25.7 cm, recorded at Walsden Water Warland on 25 September 2023.

Across 611 measured brown / sea trout, the median measured length was 8.8 cm.

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

See brown / sea trout records across England →

Most recent observation19 September 2025Walsden Water downstream Owler Clough · 52 fish
Largest measured brown / sea trout
25.7 cm
Median length
8.8 cm
Fish measured
611
Survey locations
5

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
25.7 cm25 Sept 2023Walsden Water Warland163470
23.4 cm19 Sept 2003Shade Swineshead Rd78697
22.8 cm19 Sept 2003Shade Swineshead Rd78697
22.5 cm25 Sept 2023Walsden Water Warland163470
22.1 cm19 Sept 2003Shade Swineshead Rd78697
21.9 cm19 Sept 2003Shade Swineshead Rd78697
21.4 cm3 Aug 2015Shade Swineshead Rd145785
21.3 cm3 Aug 2015Shade Swineshead Rd145785
20.5 cm19 Sept 2003Shade Swineshead Rd78697
20.4 cm19 Sept 2003Shade Swineshead Rd78697

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
Walsden Water downstream Owler Clough7 Sept 202319 Sept 20252
Walsden Water Warland25 Sept 202319 Sept 20252
Walsden Water downstream Top Sluice7 Sept 20232 Sept 20252
Shade Swineshead Rd19 Sept 200330 Oct 20244
Walsden Estate6 Oct 20103 Aug 20152

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

2003–2025

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 611 measured fish were spread across different length ranges.

Smallest
4.1 cm
Lower quarter
7.2 cm
Median
8.8 cm
Upper quarter
13.1 cm
Largest
25.7 cm

Lengths are direct survey measurements rather than anglers’ catches.

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 →