Historic monitoring evidence · Environment Agency
Treverbyn
Devon and Cornwall and the Isles of Scilly · 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.
Separate-signal passport
What this record proves — and what it does not.
No blended quality score. Identity, monitoring, freshness, access and rules stay as separate signals so one strong fact cannot hide a missing one.
Stable monitoring site
- AnglerRadar ID
- ea-fish-site:8413
- EA waterbody ID
- GB108048007650
- Waterbody
- Main Fowey
- Catchment
- Fowey
Dated survey record
- Scope
- freshwater
- Survey events
- 25
- Positive taxa shown
- 8
- Recorded methods
- DC ELECTRIC FISHING · ELECTRIC FISHING · PDC ELECTRIC FISHING
Latest survey about 16 years ago
Coverage runs from 19 Apr 1977 to 2 Aug 2010. This is historic monitoring, never a live presence or catch forecast.
Access remains unresolved
The survey carries no fishing-rights boundary, permission, opening status or safety notice. Check the owner, rod licence, current byelaws and conditions separately.
Location protection: AnglerRadar does not print the survey coordinate on this page, and nearby API results use coarsened survey areas rather than exact species-linked points.
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
- 19 Apr 1977
- Latest record
- 2 Aug 2010
- Survey events
- 25
Atlantic salmon
Salmo salar- First record
- 19 Apr 1977
- Latest record
- 2 Aug 2010
- Survey events
- 25
Bullhead
Cottus gobio- First record
- 19 Apr 1977
- Latest record
- 2 Aug 2010
- Survey events
- 24
European eels > elvers
Anguilla anguilla- First record
- 19 Apr 1977
- Latest record
- 2 Aug 2010
- Survey events
- 14
Minnow
Phoxinus phoxinus- First record
- 19 Apr 1977
- Latest record
- 28 Aug 2009
- Survey events
- 12
European eel
Anguilla anguilla- First record
- 24 Jun 1977
- Latest record
- 28 Jul 2008
- Survey events
- 10
European elvers
Anguilla anguilla- First record
- 9 May 1979
- Latest record
- 10 Aug 2000
- Survey events
- 5
Salmonid species
- First record
- 17 Apr 1978
- Latest record
- 17 Apr 1978
- 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
More evidence nearby
Other surveyed waters in Devon and Cornwall and the Isles of Scilly.
1,766 survey sites in this ecology region carry recorded taxa. Each keeps its own dates and source.
Browse Devon and Cornwall and the Isles of Scilly survey sites →