Historic monitoring evidence · Environment Agency
Twickenham
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
- 12 Sept 2017
- Latest record
- 17 Sept 2019
- Survey events
- 3
Dace
Leuciscus leuciscus- First record
- 12 Sept 2017
- Latest record
- 17 Sept 2019
- Survey events
- 3
Gudgeon
Gobio gobio- First record
- 12 Sept 2017
- Latest record
- 17 Sept 2019
- Survey events
- 3
Roach
Rutilus rutilus- First record
- 12 Sept 2017
- Latest record
- 17 Sept 2019
- Survey events
- 2
Rudd
Scardinius erythrophthalmus- First record
- 17 Sept 2019
- Latest record
- 17 Sept 2019
- Survey events
- 1
Pike
Esox lucius- First record
- 17 Sept 2019
- Latest record
- 17 Sept 2019
- Survey events
- 1
European eels > elvers
Anguilla anguilla- First record
- 8 Oct 2018
- Latest record
- 8 Oct 2018
- 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