Gudgeon · Gobio gobio

Gudgeon in the Lee Navigation

Largest measured gudgeon: 14 cm

The largest gudgeon measured in Environment Agency surveys of the Lee Navigation was 14 cm, recorded at Ware Priory on 20 August 2009.

Across 576 measured gudgeon, the median measured length was 8.2 cm.

RiverFish uses Environment Agency survey measurements rather than rod-and-line angling records. These figures show fish measured during EA surveys of the Lee Navigation.

See gudgeon records across England →

Most recent observation16 September 2025Upstream Carthagena Lock · 3 fish

Largest measured gudgeon: 14 cm
Median length: 8.2 cm
Fish measured: 576
Survey locations: 14

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
14 cm	20 Aug 2009	Ware Priory	118437
13.9 cm	20 Aug 2009	Ware Priory	118437
13.1 cm	8 Sept 2006	Picketts Lock	101518
13 cm	20 Aug 2009	Ware Priory	118437
13 cm	20 Aug 2009	Ware Priory	118437
13 cm	20 Aug 2009	Ware Priory	118437
12.9 cm	1 Aug 2007	Enfield Lock (OAP Fishing Match)	106199
12.9 cm	22 Nov 1978	Waltham Abbey Marsh	116732
12.8 cm	20 Aug 2009	Ware Priory	118437
12.8 cm	8 Sept 2006	Picketts Lock	101518

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
Upstream Carthagena Lock	16 Sept 2025	16 Sept 2025	1
Ponders End	29 Nov 1978	21 Aug 2024	5
Hertford Basin	27 Aug 2019	27 Aug 2019	1
Picketts Lock	3 Sept 2004	12 Aug 2019	10
Dobbs Weir	8 Jul 2013	8 Jul 2013	1
Rye House to Stanstead Lock	29 Jun 2011	29 Jun 2011	1
Ware Priory	10 Oct 2002	20 Aug 2009	5
Enfield Lock (OAP Fishing Match)	1 Aug 2007	1 Aug 2007	1
Enfield Lock	22 Oct 2002	23 Jan 2004	2
Small Lee, Prince of Wales fields	2 Feb 1993	2 Feb 1993	1
Waltham Abbey Marsh	22 Nov 1978	22 Nov 1978	1
Rye House	26 Apr 1978	26 Apr 1978	1
Fieldes Weir to Dobbs Weir	19 Apr 1978	19 Apr 1978	1
Stanstead Lock Upstream	5 Apr 1978	5 Apr 1978	1

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

1978–2025

Survey records by year

Each bar shows how many survey visits recorded gudgeon that year.

578

079

080

081

082

083

084

085

086

087

088

089

090

091

092

193

094

095

096

097

098

099

000

001

302

103

304

105

206

307

108

209

210

211

012

213

014

015

016

017

018

219

020

021

022

023

124

125

Fish measured by surveyors

Measured length distribution

See how the 576 measured fish were spread across different length ranges.

Smallest: 3 cm
Lower quarter: 7.3 cm
Median: 8.3 cm
Upper quarter: 9.8 cm
Largest: 14 cm

0–99 mm

440

100–199 mm

136

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Lee Navigation

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

Roach Perch Pike Chub Bleak Tench

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 →