RiverFish

Brown / sea trout · Salmo trutta

Brown / sea trout in the River Chess

Largest measured brown / sea trout: 52.6 cm

The largest brown / sea trout measured in Environment Agency surveys of the River Chess was 52.6 cm, recorded at Mountwood Ford on 4 October 2007.

Across 2,693 measured brown / sea trout, the median measured length was 12.4 cm.

Surveyors recorded weights for 108 brown / sea trout. The median was 9.8 oz (0.2785 kg) and the largest recorded weight was 3 lb 2.2 oz (1.42 kg).

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

See brown / sea trout records across England →

Most recent observation7 October 2025Mountwood Ford · 134 fish
Largest measured brown / sea trout
52.6 cm
Median length
12.4 cm
Fish measured
2,693
Survey locations
19

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
52.6 cm4 Oct 2007Mountwood Ford107906
51.2 cm7 Jul 2006Sarratt Bottom100024
51 cm7 Jul 2006Sarratt Bottom100024
50.6 cm5 Oct 2023Mountwood Ford163536
50.6 cm15 May 2007Mountwood Ford105334
50.5 cm7 Jul 2006Sarratt Bottom100024
50.3 cm7 Jul 2006Sarratt Bottom100024
50.2 cm7 Jul 2006Sarratt Bottom100024
50 cm4 Jul 2006Latimer99927
50 cm4 Jul 2006Latimer99927

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
Mountwood Ford1 Dec 19877 Oct 202517
Little Chess Restore Hope26 Apr 20226 Oct 20252
Large Chess Restore Hope6 Mar 20196 Oct 20253
Solesbridge nursery14 Jul 200423 Sept 202517
Scotsbridge Mill9 Jul 200310 May 20236
Latimer Water Meadows7 Mar 20197 Mar 20191
Sarratt Mill Bypass Channel16 May 201316 May 20131
Chenies Bottom Bypass Channel16 May 201316 May 20131
Bois Mill23 Oct 201223 Oct 20121
Loudwater Lane11 Jul 200611 Jul 20061
Sarratt Bottom7 Jul 20067 Jul 20061
Water Cress beds/Chenies6 Jul 20066 Jul 20061
Latimer4 Jul 20064 Jul 20061
Solesbridge mill19 Jun 200619 Jun 20061
Scotts Bridge15 Dec 198715 Dec 19871
British Fresian Society4 Dec 19874 Dec 19871
Sarratt Mill3 Dec 19873 Dec 19871
Latimer Island25 Nov 198725 Nov 19871
Loudwater Lane (Masonic Lodge)24 Nov 198724 Nov 19871

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

1987–2025

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 2,693 measured fish were spread across different length ranges.

Smallest
3.3 cm
Lower quarter
7.8 cm
Median
12.4 cm
Upper quarter
23 cm
Largest
52.6 cm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 108 brown / sea trout. This is a subset of the measured fish and may not represent the whole population.

Lightest
0 oz (0.001 kg)
Lower quarter
1.2 oz (0.0328 kg)
Median
9.8 oz (0.2785 kg)
Upper quarter
1 lb 0.7 oz (0.473 kg)
Heaviest
3 lb 2.2 oz (1.42 kg)

These are direct individual weights recorded by Environment Agency surveyors. Combined bulk weights are not included.

More fish in this river

Explore the River Chess

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

Bullhead Stone loach Minnow 3-spined stickleback Grayling Atlantic salmon

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 →