Historic monitoring evidence · Environment Agency
Springwell Lane
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.
Observed taxa
What monitoring recorded here
Taxa are ordered by latest survey date. Counts and records reflect monitoring events, not an angling forecast.
Chub
Leuciscus cephalus- First record
- 11 Feb 1986
- Latest record
- 15 Jun 2026
- Survey events
- 25
Barbel
Barbus barbus- First record
- 18 Oct 2001
- Latest record
- 15 Jun 2026
- Survey events
- 24
Dace
Leuciscus leuciscus- First record
- 11 Feb 1986
- Latest record
- 15 Jun 2026
- Survey events
- 24
Gudgeon
Gobio gobio- First record
- 11 Feb 1986
- Latest record
- 15 Jun 2026
- Survey events
- 24
Roach
Rutilus rutilus- First record
- 11 Feb 1986
- Latest record
- 15 Jun 2026
- Survey events
- 24
Perch
Perca fluviatilis- First record
- 11 Feb 1986
- Latest record
- 15 Jun 2026
- Survey events
- 23
Bullhead
Cottus gobio- First record
- 11 Feb 1986
- Latest record
- 15 Jun 2026
- Survey events
- 20
Minnow
Phoxinus phoxinus- First record
- 11 Feb 1986
- Latest record
- 15 Jun 2026
- Survey events
- 19
Brown / sea trout
Salmo trutta- First record
- 18 Oct 2001
- Latest record
- 15 Jun 2026
- Survey events
- 18
European eels > elvers
Anguilla anguilla- First record
- 17 Jul 2003
- Latest record
- 15 Jun 2026
- Survey events
- 2
Pike
Esox lucius- First record
- 22 Nov 2001
- Latest record
- 12 Jun 2025
- Survey events
- 21
Tench
Tinca tinca- First record
- 17 Jul 2003
- Latest record
- 12 Jun 2025
- Survey events
- 12
Mirror carp
Cyprinus carpio- First record
- 20 Jun 2024
- Latest record
- 20 Jun 2024
- Survey events
- 1
Bleak
Alburnus alburnus- First record
- 22 Nov 2001
- Latest record
- 22 Jun 2023
- Survey events
- 20
Stone loach
Barbatula barbatula- First record
- 11 Feb 1986
- Latest record
- 22 Jun 2023
- Survey events
- 7
3-spined stickleback
Gasterosteus aculeatus- First record
- 17 Jul 2003
- Latest record
- 22 Jun 2023
- Survey events
- 4
Ruffe
Gymnocephalus cernuus- First record
- 5 Jul 2017
- Latest record
- 1 Aug 2022
- Survey events
- 2
Tench varieties
Tinca tinca- First record
- 5 Jul 2017
- Latest record
- 5 Jul 2017
- Survey events
- 1
Brook lamprey
Lampetra planeri- First record
- 30 May 2012
- Latest record
- 30 May 2012
- Survey events
- 1
European eel
Anguilla anguilla- First record
- 11 Feb 1986
- Latest record
- 26 May 2009
- Survey events
- 7
Common bream
Abramis brama- First record
- 22 Nov 2001
- Latest record
- 27 Jul 2006
- Survey events
- 2
Roach x common bream hybrid
Rutilus rutilus x Abramis brama- First record
- 9 Aug 2005
- Latest record
- 9 Aug 2005
- Survey events
- 1
Roach x silver bream hybrid
Rutilus rutilus x Abramis bjoerkna- First record
- 22 Nov 2001
- Latest record
- 22 Nov 2001
- Survey events
- 1
Pike varieties
Esox lucius- First record
- 11 Feb 1986
- Latest record
- 11 Feb 1986
- 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 rulesProvenance
Source, licence and boundary
- SourceEnvironment Agency Ecology & Fish Data
- LicenceOpen Government Licence v3.0
- Source copy retrieved23 Jul 2026
- Terms checked23 Jul 2026
- CoverageHistoric monitoring evidence, separately dated per record
- Not assertedCurrent presence, access, permission, fishing quality or safety