RiverFish

Dace · Leuciscus leuciscus

Dace in the Lee Navigation

Largest measured dace: 24.8 cm

The largest dace measured in Environment Agency surveys of the Lee Navigation was 24.8 cm, recorded at Marshgate Drive (Dicker Mill Stream) on 17 September 1992.

Across 461 measured dace, the median measured length was 11.4 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 dace records across England →

Most recent observation16 September 2025Upstream Carthagena Lock · 1 fish
Largest measured dace
24.8 cm
Median length
11.4 cm
Fish measured
461
Survey locations
14

Individual EA measurements

Largest measured dace

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

LengthSurvey dateSurvey locationSurvey ID
24.8 cm17 Sept 1992Marshgate Drive (Dicker Mill Stream)115993
24.1 cm1 Oct 1992Amwell Quarry116012
22.9 cm1 Oct 1992Amwell Quarry116012
21.6 cm1 Oct 1992Amwell Quarry116012
21.5 cm20 Jul 2009Hertford Basin118226
21.3 cm17 Sept 1992Marshgate Drive (Dicker Mill Stream)115993
20.8 cm5 Nov 1992Ware Priory115996
20.6 cm17 Sept 1992Marshgate Drive (Dicker Mill Stream)115993
20.5 cm17 Sept 1992Marshgate Drive (Dicker Mill Stream)115993
20.3 cm23 Sept 2003Ware Priory77073

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

Explore the river

Where dace were found

Each point marks a survey location with at least one dace 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 dace
Upstream Carthagena Lock16 Sept 202516 Sept 20251
Picketts Lock3 Oct 200310 Jul 20255
Hertford Basin15 Dec 19928 Jul 202513
Ponders End29 Nov 197821 Aug 20243
Enfield Lock23 Jan 200413 Aug 20245
Hertford Lock to Ware Lock28 Jun 201128 Jun 20111
Enfield Lock (OAP Fishing Match)6 Aug 20084 Aug 20103
Ware Priory5 Nov 199220 Aug 20096
Small Lee, Prince of Wales fields2 Feb 19932 Feb 19931
Amwell Quarry1 Oct 19921 Oct 19921
Marshgate Drive (Dicker Mill Stream)17 Sept 199217 Sept 19921
New Gauge4 Jul 19784 Jul 19781
Rye House26 Apr 197826 Apr 19781
Stanstead Lock Upstream5 Apr 19785 Apr 19781

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 dace that year.

Fish measured by surveyors

Measured length distribution

See how the 461 measured fish were spread across different length ranges.

Smallest
3.8 cm
Lower quarter
9.8 cm
Median
11.4 cm
Upper quarter
15.4 cm
Largest
24.8 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 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 →