RiverFish

Roach · Rutilus rutilus

Roach in the River Gwash

Largest measured roach: 32.5 cm

The largest roach measured in Environment Agency surveys of the River Gwash was 32.5 cm, recorded at Newstead Mill on 19 March 1990.

Across 204 measured roach, the median measured length was 17 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 Gwash.

See roach records across England →

Most recent observation17 August 2023Foundry Road · 3 fish
Largest measured roach
32.5 cm
Median length
17 cm
Fish measured
204
Survey locations
10

Individual EA measurements

Largest measured roach

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

LengthSurvey dateSurvey locationSurvey ID
32.5 cm19 Mar 1990Newstead Mill54509
32 cm19 Mar 1990Newstead Mill54509
31 cm19 Mar 1990Newstead Mill54509
31 cm19 Mar 1990Newstead Mill54509
28.5 cm20 Mar 1996Downstream Ingthorpe Road Bridge54526
28 cm12 Mar 1990Upstream White Post Bridge54508
27.5 cm14 Jun 2013Foundry Road137454
27.5 cm3 Mar 1993Shacklewell Lodge Ingthorpe54514
26.8 cm5 Jun 2014Foundry Road141008
26.5 cm17 Aug 2023Foundry Road163361

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where roach were found

Each point marks a survey location with at least one roach 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 roach
Foundry Road12 Jul 201117 Aug 20236
Upstream White Post Bridge12 Mar 199015 Aug 20233
Upstream Ryhall STW - Flow project Site14 May 201514 May 20151
Church bridge - u/s Empingham16 Mar 199017 May 20124
Belmesthorpe Meadow12 Mar 199010 May 20123
Little Casterton10 Mar 19935 Jul 20113
Friths Farm13 Mar 199027 Mar 19962
Downstream Ingthorpe Road Bridge20 Mar 199620 Mar 19961
Shacklewell Lodge Ingthorpe3 Mar 19933 Mar 19931
Newstead Mill19 Mar 199019 Mar 19901

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

1990–2023

Survey records by year

Each bar shows how many survey visits recorded roach that year.

Fish measured by surveyors

Measured length distribution

See how the 204 measured fish were spread across different length ranges.

Smallest
5.5 cm
Lower quarter
14 cm
Median
17 cm
Upper quarter
19 cm
Largest
32.5 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Gwash

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

Brown / sea trout European eel Bullhead Grayling Dace Perch

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 →