RiverFish

Gudgeon · Gobio gobio

Gudgeon in the River Cookham - Boulters

Largest measured gudgeon: 13.2 cm

The largest gudgeon measured in Environment Agency surveys of the River Cookham - Boulters was 13.2 cm, recorded at Odney Weir Stream, Cookham. on 7 September 2004.

Across 96 measured gudgeon, the median measured length was 10.1 cm.

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

See gudgeon records across England →

Most recent observation28 July 2023Cliveden Island · 2 fish
Largest measured gudgeon
13.2 cm
Median length
10.1 cm
Fish measured
96
Survey locations
3

Individual EA measurements

Largest measured gudgeon

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

LengthSurvey dateSurvey locationSurvey ID
13.2 cm7 Sept 2004Odney Weir Stream, Cookham.82531
13 cm2 Sept 2003Cliveden Island76962
13 cm2 Sept 2003Cliveden Island76962
12.9 cm7 Sept 2004Odney Weir Stream, Cookham.82531
12.5 cm10 Sept 2002Odney Weir Stream, Cookham.68620
12.5 cm1 Sept 2000Odney Weir Stream, Cookham.121565
12.5 cm1 Sept 2000Odney Weir Stream, Cookham.121565
12.5 cm1 Sept 2000Odney Weir Stream, Cookham.121565
12.5 cm1 Sept 2000Odney Weir Stream, Cookham.121565
12.5 cm1 Sept 2000Cliveden Island121563

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 surveyedFirst recordedLast recordedVisits finding gudgeon
Cliveden Island1 Sept 199828 Jul 202313
Odney Weir Stream, Cookham.1 Sept 20002 Sept 201310
Hedsor Weir Stream Cookham to Boulters1 Sept 20051 Sept 20051

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

1998–2023

Survey records by year

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

Fish measured by surveyors

Measured length distribution

See how the 96 measured fish were spread across different length ranges.

Smallest
7.4 cm
Lower quarter
9.2 cm
Median
10.1 cm
Upper quarter
11.5 cm
Largest
13.2 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Cookham - Boulters

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

Bleak Roach Perch Pike European eel Dace

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 →