Perch · Perca fluviatilis

Perch in the Thorney River Inc Counter Drain

Largest measured perch: 22.5 cm

The largest perch measured in Environment Agency surveys of the Thorney River Inc Counter Drain was 22.5 cm, recorded at Dog-in-a-Doublet Pumping Station on 14 April 1997.

Across 63 measured perch, the median measured length was 9 cm.

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

See perch records across England →

Most recent observation14 April 1997Dog-in-a-Doublet Pumping Station · 36 fish

Largest measured perch: 22.5 cm
Median length: 9 cm
Fish measured: 63
Survey locations: 3

Individual EA measurements

Largest measured perch

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
22.5 cm	14 Apr 1997	Dog-in-a-Doublet Pumping Station	54645
21.5 cm	14 Apr 1997	Dog-in-a-Doublet Pumping Station	54645
19.5 cm	14 Apr 1997	Dog-in-a-Doublet Pumping Station	54645
19 cm	14 Apr 1997	Dog-in-a-Doublet Pumping Station	54645
18 cm	14 Apr 1997	Dog-in-a-Doublet Pumping Station	54645
17.5 cm	13 Apr 1994	Dog-in-a-Doublet Pumping Station	54621
17 cm	14 Apr 1997	Dog-in-a-Doublet Pumping Station	54645
17 cm	14 Apr 1997	Dog-in-a-Doublet Pumping Station	54645
17 cm	14 Apr 1997	Dog-in-a-Doublet Pumping Station	54645
16 cm	14 Apr 1997	Dog-in-a-Doublet Pumping Station	54645

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

Explore the river

Where perch were found

Each point marks a survey location with at least one perch 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 perch
Stone Bridge	14 Apr 1997	14 Apr 1997	1
Dog-in-a-Doublet Pumping Station	13 Apr 1994	14 Apr 1997	2
Bassnimoor Farm	23 May 1994	23 May 1994	1

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

1994–1997

Survey records by year

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

294

095

096

297

Fish measured by surveyors

Measured length distribution

See how the 63 measured fish were spread across different length ranges.

Smallest: 2 cm
Lower quarter: 8.5 cm
Median: 9 cm
Upper quarter: 15 cm
Largest: 22.5 cm

0–99 mm

100–199 mm

200–299 mm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the Thorney River Inc Counter Drain

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

Pike Roach Tench Silver 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 →