Historic monitoring evidence · Environment Agency
Boulters Weir U/S Fry
Thames · 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.
Minnow
Phoxinus phoxinus- First record
- 26 Aug 2003
- Latest record
- 4 Sept 2025
- Survey events
- 18
Dace
Leuciscus leuciscus- First record
- 7 Sept 2004
- Latest record
- 4 Sept 2025
- Survey events
- 13
Bleak
Alburnus alburnus- First record
- 26 Aug 2003
- Latest record
- 4 Sept 2025
- Survey events
- 13
Chub
Leuciscus cephalus- First record
- 7 Sept 2004
- Latest record
- 4 Sept 2025
- Survey events
- 11
Perch
Perca fluviatilis- First record
- 26 Aug 2003
- Latest record
- 4 Sept 2025
- Survey events
- 8
Bullhead
Cottus gobio- First record
- 30 Aug 2005
- Latest record
- 4 Sept 2025
- Survey events
- 8
Stone loach
Barbatula barbatula- First record
- 7 Sept 2004
- Latest record
- 4 Sept 2025
- Survey events
- 4
Roach
Rutilus rutilus- First record
- 26 Aug 2003
- Latest record
- 30 Aug 2023
- Survey events
- 12
Gudgeon
Gobio gobio- First record
- 26 Aug 2003
- Latest record
- 30 Aug 2023
- Survey events
- 9
3-spined stickleback
Gasterosteus aculeatus- First record
- 7 Sept 2004
- Latest record
- 20 Aug 2018
- Survey events
- 3
Barbel
Barbus barbus- First record
- 27 Aug 2013
- Latest record
- 20 Aug 2018
- Survey events
- 2
Pike
Esox lucius- First record
- 22 Aug 2017
- Latest record
- 22 Aug 2017
- Survey events
- 1
Common [wild] carp
Cyprinus carpio- First record
- 31 Aug 2006
- Latest record
- 31 Aug 2006
- 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