Historic monitoring evidence · Environment Agency
Denham Country Park
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.
Perch
Perca fluviatilis- First record
- 6 May 1999
- Latest record
- 7 Nov 2000
- Survey events
- 3
Bullhead
Cottus gobio- First record
- 6 May 1999
- Latest record
- 7 Nov 2000
- Survey events
- 3
Minnow
Phoxinus phoxinus- First record
- 6 May 1999
- Latest record
- 7 Nov 2000
- Survey events
- 3
Stone loach
Barbatula barbatula- First record
- 6 May 1999
- Latest record
- 7 Nov 2000
- Survey events
- 3
3-spined stickleback
Gasterosteus aculeatus- First record
- 6 May 1999
- Latest record
- 7 Nov 2000
- Survey events
- 2
Chub
Leuciscus cephalus- First record
- 7 Nov 2000
- Latest record
- 7 Nov 2000
- Survey events
- 1
Dace
Leuciscus leuciscus- First record
- 7 Nov 2000
- Latest record
- 7 Nov 2000
- Survey events
- 1
Pike varieties
Esox lucius- First record
- 6 May 1999
- Latest record
- 27 Jun 2000
- Survey events
- 2
European eel
Anguilla anguilla- First record
- 6 May 1999
- Latest record
- 27 Jun 2000
- 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 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