Individual EA measurements
Largest measured chub
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 |
|---|---|---|---|
| 57.5 cm | 12 Jul 2007 | Hartham Common | 106033 |
| 55.4 cm | 2 Jun 2015 | Kings Weir | 144824 |
| 55.4 cm | 26 Jul 2013 | Waterdale | 137541 |
| 55.3 cm | 2 Jun 2015 | Kings Weir | 144824 |
| 55.3 cm | 2 Jun 2015 | Kings Weir | 144824 |
| 55 cm | 23 Jun 2011 | Hartham Common | 126756 |
| 54.6 cm | 2 Jun 2015 | Kings Weir | 144824 |
| 54.5 cm | 12 Jul 2007 | Hartham Common | 106033 |
| 54.2 cm | 1 Aug 2019 | Waterdale | 155085 |
| 54 cm | 29 May 2014 | Kings Weir Back Loop | 140926 |
Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.
Explore the river
Where chub were found
Each point marks a survey location with at least one chub 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 chub |
|---|---|---|---|
| Amwell Loop | 12 Apr 1978 | 23 Jul 2026 | 22 |
| Fishers Green | 6 Sept 1978 | 7 Jul 2026 | 20 |
| Wheathampstead | 18 Oct 2002 | 9 Jun 2026 | 21 |
| Hackney Marshes | 11 Nov 2003 | 11 Sept 2025 | 13 |
| Waterdale | 22 Oct 2002 | 31 Jul 2025 | 14 |
| Red Spinners Bayford | 4 Aug 2017 | 17 Jul 2025 | 5 |
| Stanborough Park | 10 Sept 2003 | 24 Jun 2025 | 13 |
| Hyde Mill | 9 Oct 2002 | 17 Jun 2025 | 14 |
| Woolmers Park | 1 Nov 2002 | 3 Aug 2023 | 11 |
| Hartham Leisure centre | 24 Jun 2019 | 24 Jun 2019 | 1 |
| Hartham Common Weir | 21 Jun 2018 | 21 Jun 2018 | 1 |
| Hartham Common | 24 Oct 2002 | 21 Jun 2018 | 15 |
| Fishers Green barbel investigation | 3 Nov 2017 | 3 Nov 2017 | 1 |
| Kings Weir | 11 Jun 1992 | 2 Jun 2015 | 2 |
| Batford | 16 Apr 2008 | 19 Jun 2014 | 2 |
| Kings Weir Back Loop | 14 May 2013 | 29 May 2014 | 2 |
| Essendon | 11 Sept 2003 | 26 Jun 2013 | 9 |
| Waterend | 17 Apr 2008 | 17 Apr 2008 | 1 |
| Bush hall | 27 Nov 2007 | 27 Nov 2007 | 1 |
| Bayford | 7 Nov 2003 | 27 Oct 2006 | 4 |
| Hertford County Hall AS | 28 Nov 2003 | 28 Nov 2003 | 1 |
| Walthamstow Resevoirs | 2 Mar 1993 | 2 Mar 1993 | 1 |
| River Lynch | 13 Oct 1992 | 13 Oct 1992 | 1 |
| Hertford Football Ground | 29 Mar 1978 | 29 Mar 1978 | 1 |
| Water Hall Farm | 22 Mar 1978 | 22 Mar 1978 | 1 |
| Downstream Cecil Saw Mills | 15 Mar 1978 | 15 Mar 1978 | 1 |
Choose a point or table row to see the location. More survey visits can mean more records, but not necessarily more fish.
1978–2026
Survey records by year
Each bar shows how many survey visits recorded chub that year.
Fish measured by surveyors
Measured length distribution
See how the 12,299 measured fish were spread across different length ranges.
- Smallest
- 2 cm
- Lower quarter
- 12.1 cm
- Median
- 16.3 cm
- Upper quarter
- 22.1 cm
- Largest
- 57.5 cm
Lengths are direct survey measurements rather than anglers’ catches.
More fish in this river
Explore the River Lee
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 →