RiverFish

Atlantic salmon · Salmo salar

Atlantic salmon in the River Onny

Largest measured atlantic salmon: 20.9 cm

The largest atlantic salmon measured in Environment Agency surveys of the River Onny was 20.9 cm, recorded at Craven Arms (DS Halford Weir) on 17 September 2024.

Across 2,077 measured atlantic salmon, the median measured length was 7.8 cm.

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

See atlantic salmon records across England →

Most recent observation29 August 2025Bromfield · 11 fish
Largest measured atlantic salmon
20.9 cm
Median length
7.8 cm
Fish measured
2,077
Survey locations
14

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.

LengthSurvey dateSurvey locationSurvey ID
20.9 cm17 Sept 2024Craven Arms (DS Halford Weir)168174
19.8 cm29 Aug 2025Bromfield178211
19.7 cm5 Aug 2021Park Farm160072
19.7 cm19 Jun 2014Bromfield141467
19.4 cm29 Aug 2025Bromfield178211
19.1 cm4 Aug 2021Craven Arms (DS Halford Weir)160048
19 cm10 Aug 2023Horderley162918
18.5 cm4 Aug 2021Craven Arms (DS Halford Weir)160048
18.4 cm14 Aug 2023Craven Arms (DS Halford Weir)162920
18.3 cm17 Sept 2024Craven Arms (DS Halford Weir)168174

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 surveyedFirst recordedLast recordedVisits finding atlantic salmon
Bromfield25 Sept 199129 Aug 20257
Park Farm23 Jun 200028 Aug 202515
Upstream Plowden Mill11 Aug 202120 Aug 20255
Horderley17 Jun 201420 Aug 20256
Craven Arms (DS Halford Weir)4 Aug 202117 Sept 20244
Wooton Farm - Riffle28 Sept 202328 Sept 20231
Bromfield - Riffle28 Sept 202328 Sept 20231
Park Farm - Riffle27 Sept 202327 Sept 20231
Myndmill Bridge - Riffle27 Sept 202327 Sept 20231
Horderley - Riffle27 Sept 202327 Sept 20231
High House - Riffle27 Sept 202327 Sept 20231
Craven Arms (ds Halford Weir) - Riffle27 Sept 202327 Sept 20231
Nind20 Jun 200020 Jun 20001
Linley20 Jun 200020 Jun 20001

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

1991–2025

Survey records by year

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

Fish measured by surveyors

Measured length distribution

See how the 2,077 measured fish were spread across different length ranges.

Smallest
3.3 cm
Lower quarter
6.7 cm
Median
7.8 cm
Upper quarter
9.5 cm
Largest
20.9 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Onny

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

Bullhead Stone loach Minnow Brown / sea trout European eel Grayling

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 →