RiverFish

Atlantic salmon · Salmo salar

Atlantic salmon in the Colly Brook

Largest measured atlantic salmon: 15.9 cm

The largest atlantic salmon measured in Environment Agency surveys of the Colly Brook was 15.9 cm, recorded at Colly Brook on 1 July 1998.

Across 508 measured atlantic salmon, the median measured length was 9.8 cm.

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

See atlantic salmon records across England →

Most recent observation4 June 2024Colly Brook · 1 fish
Largest measured atlantic salmon
15.9 cm
Median length
9.8 cm
Fish measured
508
Survey locations
1

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
15.9 cm1 Jul 1998Colly Brook104767
15.8 cm1 Jun 2016Colly Brook148152
14.8 cm12 Jun 2014Colly Brook141124
14.6 cm17 Jul 2003Colly Brook78207
14.2 cm4 Jun 2024Colly Brook165214
14.2 cm19 Jun 2006Colly Brook100627
14.1 cm1 Jul 1998Colly Brook104767
14 cm6 Jul 1999Colly Brook104747
13.9 cm29 Jun 2010Colly Brook122851
13.9 cm16 Jul 2002Colly Brook72512

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
Colly Brook21 Jul 19834 Jun 202420

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

1983–2024

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 508 measured fish were spread across different length ranges.

Smallest
3 cm
Lower quarter
5.7 cm
Median
9.8 cm
Upper quarter
11.1 cm
Largest
15.9 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Colly Brook

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

Brown / sea trout European eel

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 →