Individual EA measurements
Largest measured roach
The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.
| Length | Survey date | Survey location | Survey ID |
|---|---|---|---|
| 31.6 cm | 15 Jul 1993 | Newton Surmaville | 79823 |
| 28.7 cm | 24 Aug 2004 | Downstream Sherborne Lake (Te) | 81594 |
| 27.4 cm | 9 Jun 2005 | Gas Works d/s Ilchester (Te) | 84754 |
| 26.9 cm | 20 Jul 1993 | Downstream Pen Mill Gauging Station | 79838 |
| 26.1 cm | 20 Jul 1993 | Downstream Pen Mill Gauging Station | 79838 |
| 25.7 cm | 25 May 2004 | Yeovil Bridge (Te) | 80053 |
| 25.5 cm | 20 Jul 1993 | Downstream Pen Mill Gauging Station | 79838 |
| 25.5 cm | 10 Jun 1993 | Downstream Load Bridge | 79895 |
| 24.7 cm | 23 Jun 1993 | Downstream Hainbury Mill | 79863 |
| 23.8 cm | 18 Jul 2006 | Yeovil Bridge (Te) | 100282 |
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 surveyed | First recorded | Last recorded | Visits finding roach |
|---|---|---|---|
| Mudford | 20 Jun 2007 | 21 Aug 2024 | 3 |
| Yeovil Bridge (Te) | 5 Aug 2003 | 17 Jul 2014 | 11 |
| Bradford Abbas (Te) | 23 Jul 1993 | 25 Sept 2013 | 2 |
| Pibsbury Pumping Station (Te) | 3 Oct 2003 | 9 Jul 2013 | 8 |
| Goathill Higher | 16 Aug 2010 | 16 Aug 2010 | 1 |
| Sherborne STW | 21 Jul 2010 | 21 Jul 2010 | 1 |
| Gas Works d/s Ilchester (Te) | 28 Oct 2003 | 29 Jul 2008 | 5 |
| Downstream Sherborne Lake (Te) | 4 Jun 2003 | 12 Jul 2007 | 4 |
| Up Mudford Investigation Site | 16 Aug 2005 | 16 Aug 2005 | 1 |
| Downstream Pen Mill Gauging Station | 20 Jul 1993 | 20 Jul 1993 | 1 |
| Newton Surmaville | 15 Jul 1993 | 15 Jul 1993 | 1 |
| Over Compton | 13 Jul 1993 | 13 Jul 1993 | 1 |
| Up Mudford | 8 Jul 1993 | 8 Jul 1993 | 1 |
| Downstream Yeovilton Weir | 6 Jul 1993 | 6 Jul 1993 | 1 |
| Witcomb Drove | 30 Jun 1993 | 30 Jun 1993 | 1 |
| Upstream Ashington Bridge | 29 Jun 1993 | 29 Jun 1993 | 1 |
| Manor Farm, Ashington | 24 Jun 1993 | 24 Jun 1993 | 1 |
| Downstream Hainbury Mill | 23 Jun 1993 | 23 Jun 1993 | 1 |
| Great Yard, Ilchester | 22 Jun 1993 | 22 Jun 1993 | 1 |
| Downstream Load Bridge | 10 Jun 1993 | 10 Jun 1993 | 1 |
| Downstream Ablake | 8 Jun 1993 | 8 Jun 1993 | 1 |
| Upstream Ablake | 12 May 1993 | 12 May 1993 | 1 |
| Upstream Pill Bridge | 5 May 1993 | 5 May 1993 | 1 |
Choose a point or table row to see the location. More survey visits can mean more records, but not necessarily more fish.
1993–2024
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 1,610 measured fish were spread across different length ranges.
- Smallest
- 2.3 cm
- Lower quarter
- 6.7 cm
- Median
- 10.3 cm
- Upper quarter
- 14 cm
- Largest
- 31.6 cm
Lengths are direct survey measurements rather than anglers’ catches.
Fish weighed by surveyors
Measured weight summary
Recorded weights were available for 977 roach. This is a subset of the measured fish and may not represent the whole population.
- Lightest
- 0 oz (0.001 kg)
- Lower quarter
- 0.2 oz (0.005 kg)
- Median
- 0.7 oz (0.019 kg)
- Upper quarter
- 1.9 oz (0.054 kg)
- Heaviest
- 1 lb 3.7 oz (0.559 kg)
These are direct individual weights recorded by Environment Agency surveyors. Combined bulk weights are not included.
More fish in this river
Explore the Main River Yeo
Compare other species with enough survey and measurement data for a detailed page.
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 →