Common carp · Cyprinus carpio

Common carp in the Grand Union Canal

Largest measured common carp: 68.3 cm

The largest common carp measured in Environment Agency surveys of the Grand Union Canal was 68.3 cm, recorded at Three Locks on 19 March 1990.

Across 66 measured common carp, the median measured length was 17.3 cm.

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 observation24 November 1993Ivinghoe Lock · 51 fish

Largest measured common carp: 68.3 cm
Median length: 17.3 cm
Fish measured: 66
Survey locations: 3

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
68.3 cm	19 Mar 1990	Three Locks	28785
59.8 cm	19 Mar 1990	Three Locks	28785
55.3 cm	19 Mar 1990	Three Locks	28785
54.8 cm	15 Mar 1990	Leighton Buzzard Canal	28784
53.8 cm	19 Mar 1990	Three Locks	28785
52.8 cm	19 Mar 1990	Three Locks	28785
50.3 cm	13 Mar 1990	Ivinghoe Lock	28782
48.3 cm	13 Mar 1990	Ivinghoe Lock	28782
47.8 cm	13 Mar 1990	Ivinghoe Lock	28782
47.3 cm	13 Mar 1990	Ivinghoe Lock	28782

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
Ivinghoe Lock	13 Mar 1990	24 Nov 1993	2
Three Locks	19 Mar 1990	19 Mar 1990	1
Leighton Buzzard Canal	15 Mar 1990	15 Mar 1990	1

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

1990–1993

Survey records by year

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

390

091

092

193

Fish measured by surveyors

Measured length distribution

See how the 66 measured fish were spread across different length ranges.

Smallest: 14.3 cm
Lower quarter: 16.3 cm
Median: 17.3 cm
Upper quarter: 19.2 cm
Largest: 68.3 cm

100–199 mm

300–399 mm

400–499 mm

500–599 mm

600–699 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Grand Union Canal

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

Perch Common bream Gudgeon Roach Ruffe Pike

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 →