ARAnglerRadar evidence & rules

Historic monitoring evidence · Environment Agency

Blue Mills

East Anglia · survey site

This page records ecological survey evidence. It is not proof of current fish presence, abundance, fishing quality, access, permission or safety at this location.

20survey events
9 Aug 1984first recorded survey
28 Sept 2023latest recorded survey
17observed taxa shown

Separate-signal passport

What this record proves — and what it does not.

No blended quality score. Identity, monitoring, freshness, access and rules stay as separate signals so one strong fact cannot hide a missing one.

01 · Identity

Stable monitoring site

AnglerRadar ID
ea-fish-site:804
EA waterbody ID
GB105037041160
Waterbody
River Blackwater
Catchment
Blackwater Catchment
02 · Observed evidence

Dated survey record

Scope
freshwater
Survey events
20
Positive taxa shown
17
Recorded methods
AC ELECTRIC FISHING · PDC ELECTRIC FISHING
03 · Freshness

Latest survey about 3 years ago

Coverage runs from 9 Aug 1984 to 28 Sept 2023. This is historic monitoring, never a live presence or catch forecast.

04 · Trip constraints

Access remains unresolved

The survey carries no fishing-rights boundary, permission, opening status or safety notice. Check the owner, rod licence, current byelaws and conditions separately.

Location protection: AnglerRadar does not print the survey coordinate on this page, and nearby API results use coarsened survey areas rather than exact species-linked points.

Observed taxa

What monitoring recorded here

Taxa are ordered by latest survey date. Counts and records reflect monitoring events, not an angling forecast.

Dace

Leuciscus leuciscus
First record
9 Aug 1984
Latest record
28 Sept 2023
Survey events
20

Gudgeon

Gobio gobio
First record
9 Aug 1984
Latest record
28 Sept 2023
Survey events
20

Roach

Rutilus rutilus
First record
9 Aug 1984
Latest record
28 Sept 2023
Survey events
20

Perch

Perca fluviatilis
First record
9 Aug 1984
Latest record
28 Sept 2023
Survey events
20

Chub

Leuciscus cephalus
First record
9 Aug 1984
Latest record
28 Sept 2023
Survey events
19

European eels > elvers

Anguilla anguilla
First record
9 Aug 1984
Latest record
28 Sept 2023
Survey events
19

Minnow

Phoxinus phoxinus
First record
9 Aug 1984
Latest record
28 Sept 2023
Survey events
18

Pike

Esox lucius
First record
3 Jun 1993
Latest record
28 Sept 2023
Survey events
17

Bullhead

Cottus gobio
First record
27 Apr 1987
Latest record
28 Sept 2023
Survey events
13

Stone loach

Barbatula barbatula
First record
27 Apr 1987
Latest record
28 Sept 2023
Survey events
11

3-spined stickleback

Gasterosteus aculeatus
First record
29 Sept 2004
Latest record
28 Sept 2023
Survey events
4

European elvers

Anguilla anguilla
First record
25 Sept 2014
Latest record
25 Sept 2014
Survey events
1

Ruffe

Gymnocephalus cernuus
First record
27 Apr 1987
Latest record
11 Oct 2011
Survey events
13

Common bream

Abramis brama
First record
1 May 1990
Latest record
6 Oct 2010
Survey events
7

Mirror carp

Cyprinus carpio
First record
1 May 1990
Latest record
31 Aug 2001
Survey events
2

Roach x common bream hybrid

Rutilus rutilus x Abramis brama
First record
17 Sept 1996
Latest record
31 Aug 2001
Survey events
2

Rudd

Scardinius erythrophthalmus
First record
27 Apr 1987
Latest record
27 Apr 1987
Survey events
1

Rules and access

Check before you travel.

Environment Agency ecology records do not carry fishing-rights boundaries or live restrictions. Confirm the fishery owner, permission, local byelaws, seasonal rules, safety notices and current conditions before setting out.

Check live freshwater fishing rules

Provenance

Source, licence and boundary

Open the official dataset

More evidence nearby

Other surveyed waters in East Anglia.

1,913 survey sites in this ecology region carry recorded taxa. Each keeps its own dates and source.

Browse East Anglia survey sites →