ARAnglerRadar evidence & rules

Historic monitoring evidence · Environment Agency

Panshanger quarry

Hertfordshire and North London · 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.

18survey events
15 Jun 2006first recorded survey
2 Sept 2025latest 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:20800
EA waterbody ID
GB106038033270
Waterbody
Mimram
Catchment
Lee
02 · Observed evidence

Dated survey record

Scope
freshwater
Survey events
18
Positive taxa shown
17
Recorded methods
ELECTRIC FISHING · PDC ELECTRIC FISHING
03 · Freshness

Latest survey about 1 year ago

Coverage runs from 15 Jun 2006 to 2 Sept 2025. 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.

Brown / sea trout

Salmo trutta
First record
15 Jun 2006
Latest record
2 Sept 2025
Survey events
18

Bullhead

Cottus gobio
First record
15 Jun 2006
Latest record
2 Sept 2025
Survey events
18

Grayling

Thymallus thymallus
First record
15 Jun 2006
Latest record
2 Sept 2025
Survey events
10

Dace

Leuciscus leuciscus
First record
13 Sept 2007
Latest record
2 Sept 2025
Survey events
9

Pike

Esox lucius
First record
15 Jun 2006
Latest record
2 Sept 2025
Survey events
6

Brook lamprey > ammocoete

Lampetra planeri
First record
24 Oct 2017
Latest record
2 Sept 2025
Survey events
5

Stone loach

Barbatula barbatula
First record
15 Jun 2006
Latest record
20 Aug 2024
Survey events
17

Pike varieties

Esox lucius
First record
8 Oct 2008
Latest record
20 Aug 2024
Survey events
2

3-spined stickleback

Gasterosteus aculeatus
First record
15 Jun 2006
Latest record
7 Sept 2023
Survey events
14

Brook lamprey ammocoetes

Lampetra planeri
First record
24 Oct 2017
Latest record
7 Sept 2023
Survey events
3

Rudd

Scardinius erythrophthalmus
First record
26 Apr 2007
Latest record
11 Oct 2018
Survey events
3

Roach

Rutilus rutilus
First record
26 Apr 2007
Latest record
7 Oct 2014
Survey events
2

Brook lamprey

Lampetra planeri
First record
26 Apr 2007
Latest record
21 Sept 2011
Survey events
2

Rudd varieties

Scardinius erythrophthalmus
First record
13 Sept 2007
Latest record
21 Sept 2010
Survey events
3

Bleak

Alburnus alburnus
First record
21 Sept 2010
Latest record
21 Sept 2010
Survey events
1

Common carp varieties

Cyprinus carpio
First record
4 Sept 2009
Latest record
4 Sept 2009
Survey events
1

European eel

Anguilla anguilla
First record
26 Apr 2007
Latest record
13 Sept 2007
Survey events
2

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 Hertfordshire and North London.

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

Browse Hertfordshire and North London survey sites →