RiverFish

Brown / sea trout · Salmo trutta

Brown / sea trout in the River Irwell

Largest measured brown / sea trout: 45 cm

The largest brown / sea trout measured in Environment Agency surveys of the River Irwell was 45 cm, recorded at Iwir10 on 7 June 2006.

Across 257 measured brown / sea trout, the median measured length was 16.8 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 Irwell.

See brown / sea trout records across England →

Most recent observation9 June 2022Iwir04 · 18 fish
Largest measured brown / sea trout
45 cm
Median length
16.8 cm
Fish measured
257
Survey locations
17

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
45 cm7 Jun 2006Iwir10100157
44.2 cm8 Jul 2003Iwir1076336
43 cm1 Jan 1997Iwir05.555610
42.1 cm12 Jul 2002Iwir0560601
40.4 cm1 Jan 1997Iwir05.555610
40 cm1 Jan 1997Iwir05.555610
39.9 cm8 Jun 2005Iwir1084864
39 cm29 Jun 2004Iwir0381752
38.8 cm10 Jul 2014u/s Holme Bridge141725
37.2 cm10 Jul 2014u/s Holme Bridge141725

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
Iwir0413 Jul 20119 Jun 20222
Iwir083 Aug 20153 Aug 20151
Iwir0729 Jun 20043 Aug 20152
u/s Holme Bridge10 Jul 201410 Jul 20141
d/s Holme Bridge10 Jul 201410 Jul 20141
Iwir05.51 Jan 199713 Jul 20112
Iwir108 Jul 20037 Jun 20064
Iwir158 Jun 20055 Jun 20062
Iwir257 Jun 20057 Jun 20051
Iwir0329 Jun 200429 Jun 20041
Iwir2028 Jun 200428 Jun 20041
Iwir066 Jan 19979 Jul 20032
Iwir0522 Nov 199612 Jul 20022
Ir148 Jan 19978 Jan 19971
Ir106 Jan 19976 Jan 19971
Ir076 Jan 19976 Jan 19971
Ir0522 Nov 199622 Nov 19961

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

1996–2022

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 257 measured fish were spread across different length ranges.

Smallest
2 cm
Lower quarter
12.8 cm
Median
16.8 cm
Upper quarter
20.1 cm
Largest
45 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Irwell

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

Bullhead Minnow Stone loach 3-spined stickleback Gudgeon Chub

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 →