Individual EA measurements
Largest measured gudgeon
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 |
|---|---|---|---|
| 21.4 cm | 21 May 2013 | Geddington Ford | 136922 |
| 17 cm | 27 Jan 1989 | Downstream Harrowden Weir | 54375 |
| 16 cm | 7 Feb 1989 | Upstream Harrowden Weir | 54374 |
| 16 cm | 7 Feb 1989 | Upstream Harrowden Weir | 54374 |
| 16 cm | 27 Jan 1989 | Downstream Harrowden Weir | 54375 |
| 15.5 cm | 21 Sept 1993 | Cogenhoe Back Channel | 54057 |
| 15.5 cm | 27 Jan 1989 | Downstream Harrowden Weir | 54375 |
| 15.5 cm | 27 Jan 1989 | Downstream Harrowden Weir | 54375 |
| 15.5 cm | 27 Jan 1989 | Downstream Harrowden Weir | 54375 |
| 15.3 cm | 21 Jul 1989 | Downstream Cotterstock | 54044 |
Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.
Explore the river
Where gudgeon were found
Each point marks a survey location with at least one gudgeon 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 gudgeon |
|---|---|---|---|
| Castor Mill Channel | 22 Sept 2011 | 30 Oct 2024 | 4 |
| Alwalton Backchannel | 22 Sept 2009 | 19 Sept 2018 | 2 |
| Yarwell Mill Back Channel | 9 Sept 1981 | 17 Sept 2018 | 17 |
| Barnwell Back Channel DS Oundle Mill | 14 Sept 2018 | 14 Sept 2018 | 1 |
| Wansford Lock Back Channel | 13 Sept 2018 | 13 Sept 2018 | 1 |
| Thrapston | 3 Jul 1995 | 25 Jun 2015 | 6 |
| Downstream Wansford Lock | 19 Jul 1989 | 22 Jun 2015 | 9 |
| Cogenhoe Back Channel | 6 Jul 1983 | 4 Jun 2015 | 7 |
| Downstream Warkton bridge | 26 Jan 1989 | 19 May 2015 | 10 |
| Finedon Road Bridge | 8 Feb 1989 | 6 May 2015 | 4 |
| Upstream Earl's Barton Lock | 25 Oct 2013 | 25 Oct 2013 | 1 |
| Wadenhoe Backchannel | 21 Sept 2009 | 16 Oct 2013 | 2 |
| Geddington Ford | 10 Apr 1995 | 21 May 2013 | 2 |
| Downstream Clifford Hill lock | 22 Jun 1989 | 12 Sept 2012 | 4 |
| Downstream Hardwater Lock | 3 May 1989 | 23 Aug 2012 | 2 |
| Ailsworth BC 1 | 17 Jan 2012 | 17 Jan 2012 | 1 |
| Downstream Fotheringhay | 19 Jun 1984 | 5 Jul 2010 | 8 |
| Barnwell Back Channel | 11 Jul 1989 | 7 Jun 2010 | 7 |
| Irthlingborough Backchannel | 18 Sept 2009 | 18 Sept 2009 | 1 |
| Ailsworth Upstream of BC weir | 12 Aug 2009 | 12 Aug 2009 | 1 |
| Downstream Wadenhoe Lock | 9 Oct 1989 | 16 Jul 2009 | 5 |
| Ailsworth | 4 Aug 1989 | 17 Jun 2009 | 6 |
| Wellingborough Back Channel | 16 May 1989 | 9 Jun 2009 | 6 |
| Downstream Oundle North Road Bridge | 20 Jul 1989 | 20 Sept 2007 | 6 |
| Cogenhoe Main Channel | 17 Sept 1979 | 11 Jul 2007 | 10 |
| Yarwell M/C | 22 Jun 1984 | 22 Jun 2006 | 8 |
| Downstream Harrowden Weir | 27 Jan 1989 | 4 May 2006 | 6 |
| Ise Brook Cottage | 6 Feb 1989 | 22 Sept 2005 | 4 |
| Downstream Irthlinborough | 23 Jun 2005 | 23 Jun 2005 | 1 |
| Upstream Wellingborough | 10 Aug 1995 | 14 Sept 2004 | 3 |
| Ferry Meadows | 3 Jul 1984 | 30 Sept 2002 | 4 |
| Wellingborough 2 | 5 Feb 1992 | 16 Jul 1998 | 2 |
| Upstream Harrowden Weir | 7 Feb 1989 | 9 Jul 1998 | 3 |
| Burton Latimer | 10 Feb 1992 | 1 Jul 1998 | 3 |
| Rushton | 11 Jan 1989 | 10 Jun 1998 | 4 |
| Billing Aquadrome | 8 May 1989 | 4 Oct 1995 | 2 |
| Upstream White Mills | 10 Sept 1995 | 10 Sept 1995 | 1 |
| Hardwater Back Channel | 8 Sept 1995 | 8 Sept 1995 | 1 |
| Downstream White Mills | 4 Sept 1995 | 4 Sept 1995 | 1 |
| Upstream Hardwater Lock | 24 Aug 1995 | 24 Aug 1995 | 1 |
| Upstream Wollaston Lock | 24 May 1989 | 23 Aug 1995 | 2 |
| Ditchford Back Channel | 6 Sept 1989 | 15 Aug 1995 | 2 |
| Upstream Ditchford Lock | 23 May 1989 | 7 Aug 1995 | 2 |
| A45 opposite RPC | 30 May 1989 | 3 Aug 1995 | 2 |
| Downstream Upper Ringstead | 12 Oct 1989 | 1 Aug 1995 | 2 |
| Stanwick Back Channel | 4 Jul 1989 | 21 Jul 1995 | 2 |
| Downstream Stanwick | 20 Jul 1995 | 20 Jul 1995 | 1 |
| Thorpe Channel | 3 Oct 1989 | 17 Jul 1995 | 2 |
| Nassington Back Channel | 11 Jul 1995 | 11 Jul 1995 | 1 |
| Lilford Park | 10 Oct 1989 | 10 Jul 1995 | 2 |
| Upstream Lower Barnwell Lock | 12 Jul 1989 | 26 Jun 1995 | 2 |
| Downstream Cotterstock | 21 Jul 1989 | 21 Jun 1995 | 3 |
| Upstream Elton Lock | 20 Jun 1995 | 20 Jun 1995 | 1 |
| Upstream Fotheringhay | 26 Jul 1993 | 9 Jun 1995 | 2 |
| Bedford Gravels | 8 Aug 1989 | 25 May 1995 | 3 |
| Elton Back Channel | 23 Apr 1995 | 23 Apr 1995 | 1 |
| Barford Bridge | 7 Apr 1995 | 7 Apr 1995 | 1 |
| Stanground Back Channel | 15 Sept 1989 | 21 Jul 1993 | 2 |
| Denford Mid Channel | 30 Jun 1989 | 15 Jul 1993 | 2 |
| White Mills Back Channel | 14 Jul 1993 | 14 Jul 1993 | 1 |
| Fotheringhay | 15 Feb 1989 | 9 Mar 1992 | 2 |
| Upstream Wickstead | 1 Feb 1989 | 30 Jan 1992 | 2 |
| A6 Desborough | 10 Jan 1989 | 21 Jan 1992 | 2 |
| Woodford No1 | 18 Oct 1989 | 18 Oct 1989 | 1 |
| Lilford Upstream | 4 Oct 1989 | 4 Oct 1989 | 1 |
| Aldwincle Channel | 2 Oct 1989 | 2 Oct 1989 | 1 |
| Stibbington | 25 Sept 1989 | 25 Sept 1989 | 1 |
| Peterborough Embankment | 14 Sept 1989 | 14 Sept 1989 | 1 |
| Upstream Milton Ferry | 1 Aug 1989 | 1 Aug 1989 | 1 |
| Nassington | 27 Jul 1989 | 27 Jul 1989 | 1 |
| Cogenhoe | 25 Jul 1989 | 25 Jul 1989 | 1 |
| Upstream Elton Road Bridge | 14 Jul 1989 | 14 Jul 1989 | 1 |
| A45 (2) | 29 Jun 1989 | 29 Jun 1989 | 1 |
| Upstream Higham Lock | 26 Jun 1989 | 26 Jun 1989 | 1 |
| Wellingborough 1 | 22 May 1989 | 22 May 1989 | 1 |
| River Ise Confluence | 22 May 1989 | 22 May 1989 | 1 |
| 13 Arches | 18 May 1989 | 18 May 1989 | 1 |
| Wellingborough Embankment | 12 May 1989 | 12 May 1989 | 1 |
| Upstream Weston Favell | 9 May 1989 | 9 May 1989 | 1 |
| Wollaston Back Channel | 5 May 1989 | 5 May 1989 | 1 |
| Downstream Rushmills | 7 Apr 1989 | 7 Apr 1989 | 1 |
| Rushmills | 6 Apr 1989 | 6 Apr 1989 | 1 |
Choose a point or table row to see the location. More survey visits can mean more records, but not necessarily more fish.
1979–2024
Survey records by year
Each bar shows how many survey visits recorded gudgeon that year.
Fish measured by surveyors
Measured length distribution
See how the 5,539 measured fish were spread across different length ranges.
- Smallest
- 3.1 cm
- Lower quarter
- 7.8 cm
- Median
- 8.6 cm
- Upper quarter
- 10.2 cm
- Largest
- 21.4 cm
Lengths are direct survey measurements rather than anglers’ catches.
More fish in this river
Explore the River Nene
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 →