RiverFish

Roach · Rutilus rutilus

Roach in the River Ouse

Largest measured roach: 99.9 cm

The largest roach measured in Environment Agency surveys of the River Ouse was 99.9 cm, recorded at Naburn Weir (boom boat site) on 27 July 1998.

Across 19,217 measured roach, the median measured length was 6.7 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 Ouse.

See roach records across England →

Most recent observation22 June 2026Naburn Weir (single anode) · 45 fish
Largest measured roach
99.9 cm
Median length
6.7 cm
Fish measured
19,217
Survey locations
23

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
99.9 cm27 Jul 1998Naburn Weir (boom boat site)108331
37.2 cm8 Aug 1997Naburn Weir (single anode)110349
33.4 cm28 Jul 2008Naburn Weir (single anode)113010
31.4 cm1 Aug 1997Linton-on-Ouse u/s weir (gill net)110165
27.5 cm8 Aug 1997Naburn Weir (gill net)110353
27.4 cm22 Jul 1996Naburn Weir (boom boat site)109504
27.2 cm11 Jul 2002Linton-on-Ouse, below weir (single anode)72749
26.9 cm12 Jul 2004Naburn Weir (gill net)80955
26.5 cm22 Jul 1996Naburn Weir (boom boat site)109504
25.6 cm12 Jul 2004Naburn Weir (gill net)80955

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
Naburn Weir (single anode)22 Jul 199622 Jun 202624
Naburn - Fry Survey25 Sept 20037 Aug 202513
Acaster - Fry Survey20 Sept 19847 Aug 202531
Linton-on-Ouse, below weir (single anode)25 Jul 19963 Jul 202524
Beningbrough Village (single anode)24 Jul 19962 Jul 202525
Linton-on-Ouse u/s weir (single anode)1 Aug 199730 Jun 202518
Acaster Malbis (single anode)26 Jul 199626 Jun 202521
Linton weir - u/s - Fry Survey29 Sept 199830 Aug 20122
Beningborough - Fry Survey20 Sept 19841 Sept 200924
Nether Poppleton (single anode)6 Aug 19975 Jul 20059
Linton-on-Ouse u/s weir (gill net)23 Jul 199620 Jul 20047
Beningbrough Village (gill net site)24 Jul 199619 Jul 20049
Acaster Malbis (gill net)7 Aug 199715 Jul 20046
Nether Poppleton (gill net site)18 Sept 199614 Jul 20048
Naburn Weir (gill net)22 Jul 199612 Jul 20049
Linton-on-Ouse u/s weir (boom boat)23 Jul 199614 Jul 20036
Linton-on-Ouse u/s (seine netting site)23 Jul 199614 Jul 20038
Beningbrough Village (seine net site)24 Jul 199610 Jul 20037
Beningbrough Village (boom boat site)24 Jul 199610 Jul 20039
Nether Poppleton (boom boat)18 Jul 19969 Jul 20037
Acaster Malbis (boom boat site)7 Aug 19978 Jul 20034
Naburn Weir (boom boat site)22 Jul 19967 Jul 20038
Naburn Weir (seine net)22 Jul 199627 Jul 19983

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

1984–2026

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 19,217 measured fish were spread across different length ranges.

Smallest
0.8 cm
Lower quarter
3.8 cm
Median
6.7 cm
Upper quarter
9.8 cm
Largest
99.9 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Ouse

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

Perch Gudgeon Ruffe Bleak Pike Common bream

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 →