RiverFish

Atlantic salmon · Salmo salar

Atlantic salmon in the River Main Yealm

Largest measured atlantic salmon: 53.3 cm

The largest atlantic salmon measured in Environment Agency surveys of the River Main Yealm was 53.3 cm, recorded at Treby Ham on 3 August 2004.

Across 1,650 measured atlantic salmon, the median measured length was 7.4 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 Main Yealm.

See atlantic salmon records across England →

Most recent observation28 August 2025Treby Ham · 6 fish
Largest measured atlantic salmon
53.3 cm
Median length
7.4 cm
Fish measured
1,650
Survey locations
29

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
53.3 cm3 Aug 2004Treby Ham81318
46 cm19 Aug 2002Yealmpton Mill72331
45.7 cm19 Aug 2002Yealmpton Mill72331
41.7 cm19 Aug 2002Yealmpton Mill72331
39.9 cm19 Aug 2002Yealmpton Mill72331
32.9 cm19 Aug 2002Yealmpton Mill72331
29.4 cm19 Aug 2002Yealmpton Mill72331
28.8 cm19 Aug 2002Yealmpton Mill72331
16.6 cm17 Sept 2014Challonsleigh143286
16.6 cm17 Sept 2014Upstream Lee Mill STW Pumping Station143284

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
Treby Ham7 Aug 200228 Aug 202517
Putta Pool3 Aug 200215 Aug 202518
Woodburn Farm28 Sept 202324 Sept 20242
Challonsleigh17 Sept 201424 Sept 20243
Yealmbridge28 Sept 202328 Aug 20242
Puslinch Bridge5 Aug 200214 Aug 202412
Downstream Puslinch Br31 Aug 202314 Aug 20242
Potsons Wood6 Aug 20025 Aug 202415
Downstream Potsons Wood18 Aug 20235 Aug 20242
Upstream Treby Ham18 Jul 202418 Jul 20241
Downstream Putta Pool9 Aug 202318 Jul 20242
Downstream South Hele10 Oct 202310 Oct 20231
South Hele2 Sept 20038 Aug 20225
Upstream Mackarell Parks Wood Stream17 Sept 201417 Sept 20141
Upstream Lee Mill STW Pumping Station17 Sept 201417 Sept 20141
Upstream Hitchcombe Tributary17 Sept 201417 Sept 20141
Downstream Strashleigh Hams Landfill Site17 Sept 201417 Sept 20141
Downstream Hitchcombe Unidentified Outfall17 Sept 201417 Sept 20141
Yealmpton Mill19 Aug 20022 Sept 20144
Southwood Wood19 Aug 20025 Aug 20143
U/s Worston Mill Footbridge6 Aug 20126 Aug 20121
70m d/s Yealmpton Mill EF site6 Aug 20126 Aug 20121
50m u/s Yealmpton Mill EF site6 Aug 20126 Aug 20121
50m d/s Lotherton Bridge6 Aug 20126 Aug 20121
20m d/s Yealm Bridge6 Aug 20126 Aug 20121
200m u/s Long Brook confluence6 Aug 20126 Aug 20121
u/s Blachford Lake14 Oct 201014 Oct 20101
d/s Blachford Lake3 Aug 20063 Aug 20061
Woodburn3 Aug 20063 Aug 20061

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

2002–2025

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 1,650 measured fish were spread across different length ranges.

Smallest
4.4 cm
Lower quarter
6.2 cm
Median
7.4 cm
Upper quarter
10.9 cm
Largest
53.3 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Main Yealm

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

Brown / sea trout European eel Bullhead Minnow Brook lamprey Flounder

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 →