Historic monitoring evidence · Environment Agency
Mountwood Ford
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.
Brown / sea trout
Salmo trutta- First record
- 1 Dec 1987
- Latest record
- 7 Oct 2025
- Survey events
- 17
Bullhead
Cottus gobio- First record
- 1 Dec 1987
- Latest record
- 7 Oct 2025
- Survey events
- 17
Minnow
Phoxinus phoxinus- First record
- 18 May 2004
- Latest record
- 7 Oct 2025
- Survey events
- 15
Stone loach
Barbatula barbatula- First record
- 1 Dec 1987
- Latest record
- 7 Oct 2025
- Survey events
- 13
3-spined stickleback
Gasterosteus aculeatus- First record
- 18 May 2004
- Latest record
- 7 Oct 2025
- Survey events
- 12
Grayling
Thymallus thymallus- First record
- 15 May 2007
- Latest record
- 7 Oct 2025
- Survey events
- 8
Rainbow trout
Oncorhynchus mykiss- First record
- 1 Dec 1987
- Latest record
- 20 Sept 2017
- Survey events
- 2
Feral [brown] goldfish
Carassius auratus- First record
- 24 Sept 2015
- Latest record
- 24 Sept 2015
- Survey events
- 1
Golden goldfish
Carassius auratus- First record
- 24 Sept 2015
- Latest record
- 24 Sept 2015
- Survey events
- 1
European eels > elvers
Anguilla anguilla- First record
- 24 Sept 2015
- Latest record
- 24 Sept 2015
- Survey events
- 1
Perch
Perca fluviatilis- First record
- 15 May 2007
- Latest record
- 12 Sept 2013
- Survey events
- 4
European eel
Anguilla anguilla- First record
- 1 Dec 1987
- Latest record
- 15 May 2007
- Survey events
- 2
10-spined stickleback
Pungitius pungitius- First record
- 18 May 2004
- Latest record
- 18 May 2004
- Survey events
- 1
Atlantic salmon
Salmo salar- First record
- 1 Dec 1987
- Latest record
- 1 Dec 1987
- 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