RiverFish

Perch · Perca fluviatilis

Perch in the River Blackwater

Largest measured perch: 39.2 cm

The largest perch measured in Environment Agency surveys of the River Blackwater was 39.2 cm, recorded at Kelvedon Coalyard on 7 September 2011.

Across 3,250 measured perch, the median measured length was 13.9 cm.

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

See perch records across England →

Most recent observation8 November 2023Dorewards Hall · 14 fish
Largest measured perch
39.2 cm
Median length
13.9 cm
Fish measured
3,250
Survey locations
24

Individual EA measurements

Largest measured perch

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

LengthSurvey dateSurvey locationSurvey ID
39.2 cm7 Sept 2011Kelvedon Coalyard127897
38.2 cm17 Sept 2002Dorewards Hall65120
38 cm5 Apr 1990Covenbrook Hall14103
37.8 cm18 Sept 2008Saint Marys Road115026
37.2 cm21 Oct 2009Kelvedon Coalyard120712
37.2 cm3 Sept 2008Dorewards Hall113872
37.2 cm9 Sept 2005Bradwell Bridge86485
36.5 cm12 Oct 2023Smallands Hall163907
36.5 cm26 Sept 2005Kelvedon Coalyard86439
36.5 cm29 Aug 1996Rye Mill14159

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 surveyedFirst recordedLast recordedVisits finding perch
Dorewards Hall19 Jul 19848 Nov 202312
Pointwell Mill24 Jul 198426 Oct 202312
Smallands Hall2 May 199012 Oct 20239
Braxted FGS6 Aug 198411 Oct 202315
Upstream Braxted Hall27 Apr 19907 Oct 20237
Saint Marys Road27 Jul 19843 Oct 202311
Stock Hall30 Apr 19871 Oct 20239
Blue Mills9 Aug 198428 Sept 202320
Kelvedon Coalyard31 Jul 198423 Sept 202319
Greys Mill20 Jul 198426 Sept 201710
Coggeshall18 Jul 198419 Sept 201717
Bradwell Hall23 Jul 198414 Sept 201711
Stisted FGS13 Jul 19844 Sept 201416
Upstream Langford Intake26 Jul 201326 Jul 20131
Langford5 May 19879 Oct 20088
Downstream Braxted Hall7 Aug 198430 Sept 20088
Ashmans Farm3 Aug 198419 Sept 20083
Feeringbury Hall26 Jul 198415 Sept 20088
Covenbrook Hall7 May 198710 Sept 20087
West Mill9 Apr 19908 Sept 20087
Bradwell Bridge12 Jul 19845 Sept 20087
Lyons Hall (River Blackwater)10 Jul 19842 Sept 20089
Hobbs Meadow11 Jul 19841 Sept 20089
Rye Mill19 Apr 199030 Sept 20025

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

1984–2023

Survey records by year

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

Fish measured by surveyors

Measured length distribution

See how the 3,250 measured fish were spread across different length ranges.

Smallest
4.2 cm
Lower quarter
11 cm
Median
13.9 cm
Upper quarter
19 cm
Largest
39.2 cm

Lengths are direct survey measurements rather than anglers’ catches.

More fish in this river

Explore the River Blackwater

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

Roach Chub Gudgeon European eel Dace 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 →