Common carp · Cyprinus carpio

Common carp in the Grand Union Canal

Largest measured common carp: 58.5 cm

The largest common carp measured in Environment Agency surveys of the Grand Union Canal was 58.5 cm, recorded at Upstream Coppermill Lock to Springwell Lock on 4 June 2013.

Across 22 measured common carp, the median measured length was 44.1 cm.

Surveyors recorded weights for 21 common carp. The median was 4 lb 13.8 oz (2.21 kg) and the largest recorded weight was 10 lb 0.5 oz (4.55 kg).

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

See common carp records across England →

Most recent observation4 June 2013Upstream Coppermill Lock to Springwell Lock · 1 fish

Largest measured common carp: 58.5 cm
Median length: 44.1 cm
Fish measured: 22
Survey locations: 5

Individual EA measurements

Largest measured common carp

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
58.5 cm	4 Jun 2013	Upstream Coppermill Lock to Springwell Lock	136266
52.5 cm	8 Mar 1988	Stockers Farm	116413
51.4 cm	23 Mar 1988	Victoria Park	116189
51.3 cm	8 Mar 1988	Stockers Farm	116413
50.4 cm	9 Mar 1988	Cassiobury Park u/s Lock	116407
49.3 cm	8 Mar 1988	Stockers Farm	116413
48.4 cm	8 Mar 1988	Stockers Farm	116413
47 cm	8 Mar 1988	Stockers Farm	116413
46 cm	8 Mar 1988	Stockers Farm	116413
45.7 cm	9 Mar 1988	Cassiobury Park u/s Lock	116407

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

Explore the river

Where common carp were found

Each point marks a survey location with at least one common carp 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 common carp
Upstream Coppermill Lock to Springwell Lock	4 Jun 2013	4 Jun 2013	1
Hunton Bridge	21 Apr 1988	21 Apr 1988	1
Victoria Park	23 Mar 1988	23 Mar 1988	1
Cassiobury Park u/s Lock	9 Mar 1988	9 Mar 1988	1
Stockers Farm	8 Mar 1988	8 Mar 1988	1

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

1988–2013

Survey records by year

Each bar shows how many survey visits recorded common carp that year.

488

089

090

091

092

093

094

095

096

097

098

099

000

001

002

003

004

005

006

007

008

009

010

011

012

113

Fish measured by surveyors

Measured length distribution

See how the 22 measured fish were spread across different length ranges.

Smallest: 26 cm
Lower quarter: 41 cm
Median: 44.1 cm
Upper quarter: 49.1 cm
Largest: 58.5 cm

200–299 mm

300–399 mm

400–499 mm

500–599 mm

Lengths are direct survey measurements rather than anglers’ catches.

Fish weighed by surveyors

Measured weight summary

Recorded weights were available for 21 common carp. This is a subset of the measured fish and may not represent the whole population.

Lightest: 1 lb 3.1 oz (0.542 kg)
Lower quarter: 3 lb 14.8 oz (1.78 kg)
Median: 4 lb 13.8 oz (2.21 kg)
Upper quarter: 6 lb 8.1 oz (2.95 kg)
Heaviest: 10 lb 0.5 oz (4.55 kg)

These are direct individual weights recorded by Environment Agency surveyors. Combined bulk weights are not included.

More fish in this river

Explore the Grand Union Canal

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

Perch Roach Pike Common bream Gudgeon European eel

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 →