Atlantic salmon · Salmo salar

Atlantic salmon in the Testwood & Nursling Fishery

Largest measured atlantic salmon: 16.4 cm

The largest atlantic salmon measured in Environment Agency surveys of the Testwood & Nursling Fishery was 16.4 cm, recorded at Wirehouse stream - North Arm on 23 August 2023.

Across 70 measured atlantic salmon, 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 Testwood & Nursling Fishery.

See atlantic salmon records across England →

Most recent observation13 August 2025Wirehouse stream - North Arm · 16 fish

Largest measured atlantic salmon: 16.4 cm
Median length: 8.8 cm
Fish measured: 70
Survey locations: 4

Individual EA measurements

Largest measured atlantic salmon

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

Length	Survey date	Survey location	Survey ID
16.4 cm	23 Aug 2023	Wirehouse stream - North Arm	163558
15.9 cm	7 Oct 2019	Wirehouse stream - North Arm	155678
13.2 cm	21 Aug 2024	Wirehouse stream - North Arm	166396
12 cm	4 Oct 2019	Nursling Mill	155685
11.1 cm	4 Oct 2019	Ghillies Run, Testwood	155679
11 cm	22 Aug 2023	Nursling Mill	163554
10.9 cm	4 Oct 2019	Ghillies Run, Testwood	155679
10.6 cm	15 Oct 2018	Wirehouse stream - South Arm	153863
10.5 cm	4 Oct 2019	Nursling Mill	155685
10.5 cm	15 Oct 2018	Wirehouse stream - South Arm	153863

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

Explore the river

Where atlantic salmon were found

Each point marks a survey location with at least one atlantic salmon 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 surveyed	First recorded	Last recorded	Visits finding atlantic salmon
Wirehouse stream - North Arm	15 Oct 2018	13 Aug 2025	5
Ghillies Run, Testwood	4 Oct 2019	12 Aug 2025	3
Nursling Mill	4 Oct 2019	20 Aug 2024	3
Wirehouse stream - South Arm	15 Oct 2018	15 Oct 2018	1

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

2018–2025

Survey records by year

Each bar shows how many survey visits recorded atlantic salmon that year.

218

319

020

021

022

223

324

225

Fish measured by surveyors

Measured length distribution

See how the 70 measured fish were spread across different length ranges.

Smallest: 6 cm
Lower quarter: 7.8 cm
Median: 8.8 cm
Upper quarter: 9.7 cm
Largest: 16.4 cm

0–99 mm

100–199 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Testwood & Nursling Fishery

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

European eel Brook lamprey Bullhead Flounder Chub Brown / sea trout

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 →