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 |
|---|---|---|---|
| 27.5 cm | 24 Oct 1990 | Hakerley Bridge | 58257 |
| 26 cm | 9 May 2008 | Frithville | 110944 |
| 25.2 cm | 24 Oct 1990 | Hakerley Bridge | 58257 |
| 24.3 cm | 11 Aug 2011 | Hakerley Bridge | 128401 |
| 23.8 cm | 9 May 2008 | Frithville | 110944 |
| 23.5 cm | 16 May 2006 | Frithville | 90863 |
| 23.5 cm | 16 May 2006 | Frithville | 90863 |
| 23.4 cm | 22 May 2006 | Skirbeck Farm | 90851 |
| 23 cm | 17 Jul 2001 | Frithville | 59050 |
| 23 cm | 17 Jul 2001 | Frithville | 59050 |
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 |
|---|---|---|---|
| Skirbeck Farm | 14 Nov 1990 | 4 Jul 2016 | 7 |
| Medlam Bridge | 30 Oct 1990 | 17 Jun 2016 | 7 |
| Hakerley Bridge | 24 Oct 1990 | 11 Aug 2011 | 6 |
| Frithville | 18 May 1993 | 9 Aug 2011 | 6 |
Choose a point or table row to see the location. More survey visits can mean more records, but not necessarily more fish.
1990–2016
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 11,929 measured fish were spread across different length ranges.
- Smallest
- 3.2 cm
- Lower quarter
- 6.7 cm
- Median
- 8.7 cm
- Upper quarter
- 11.4 cm
- Largest
- 27.5 cm
Lengths are direct survey measurements rather than anglers’ catches.
More fish in this river
Explore the Medlam Drain
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 →