RiverFish

Tench · Tinca tinca

Tench in the Lee Navigation

Largest measured tench: 47.5 cm

The largest tench measured in Environment Agency surveys of the Lee Navigation was 47.5 cm, recorded at Enfield Lock on 27 July 2011.

Across 101 measured tench, the median measured length was 16.7 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 tench records across England →

Most recent observation16 September 2025Upstream Carthagena Lock · 5 fish
Largest measured tench
47.5 cm
Median length
16.7 cm
Fish measured
101
Survey locations
19

Individual EA measurements

Largest measured tench

The largest individual measurements in this river and species dataset. Equal measurements are retained as separate surveyed fish.

LengthSurvey dateSurvey locationSurvey ID
47.5 cm27 Jul 2011Enfield Lock127139
47.4 cm25 Jul 2012Enfield Lock133913
46.8 cm10 Jul 2014Picketts Lock141682
46 cm21 Aug 2024Ponders End166574
45.4 cm23 Jul 2009Picketts Lock118116
43.4 cm5 Aug 2009Enfield Lock (OAP Fishing Match)118309
41.6 cm3 Oct 2003Picketts Lock77285
41.4 cm23 Feb 1993Hardmead (Amwell End)116015
41.1 cm21 Aug 2024Ponders End166574
40.4 cm19 Jan 1993Ponders End116682

Lengths are direct survey measurements. RiverFish does not estimate fish weights from length.

Explore the river

Where tench were found

Each point marks a survey location with at least one tench 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 surveyedFirst recordedLast recordedVisits finding tench
Upstream Carthagena Lock16 Sept 202516 Sept 20251
Enfield Lock26 Sept 20037 Aug 20259
Ponders End19 Jan 19935 Aug 20258
Picketts Lock3 Oct 200310 Jul 20257
Enfield Lock TowPath27 Sept 201827 Sept 20181
Enfield Lock ReedBeds27 Sept 201827 Sept 20181
u/s Springfield Marina3 Oct 20133 Oct 20131
Rye House to Fieldes Weir30 Jun 201130 Jun 20111
Fieldes Weir to Dobbs Weir lock30 Jun 201130 Jun 20111
Rye House to Stanstead Lock29 Jun 201129 Jun 20111
Enfield Lock (OAP Fishing Match)5 Aug 20095 Aug 20091
Dobbs Weir12 Oct 200712 Oct 20071
Springwell Marina10 Oct 200710 Oct 20071
Amwell Magna24 Feb 199324 Feb 19931
Hardmead (Amwell End)23 Feb 199323 Feb 19931
Fieldes Weir to Dobbs Weir19 Apr 197818 Feb 19932
Crown Fishery (Dobb's Lock + Carthagena)5 Feb 19935 Feb 19931
Waltham Abbey Marsh22 Nov 197826 Nov 19922
Ware Priory5 Nov 19925 Nov 19921

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 tench that year.

Fish measured by surveyors

Measured length distribution

See how the 101 measured fish were spread across different length ranges.

Smallest
5 cm
Lower quarter
13 cm
Median
16.7 cm
Upper quarter
22 cm
Largest
47.5 cm

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 Common bream

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 →