Devon and Cornwall and the Isles of Scilly · Environment Agency surveys
What fish are in the Main Yealm?
Monitoring has recorded 12 species across 33 surveyed sites on this water, between 2002 and 2025. These are survey records with dates. They do not establish what is present today, that the water is fishable, or that you have permission to fish it.
Recorded species
What monitoring has found here
Ordered by how many sites on this water recorded the species. A species not listed has not been recorded by these surveys — which is not the same as being absent.
- Brown / sea troutSalmo trutta32 siteslatest 28 Aug 2025
- Atlantic salmonSalmo salar29 siteslatest 28 Aug 2025
- BullheadCottus gobio20 siteslatest 28 Aug 2025
- European eelAnguilla anguilla18 siteslatest 23 Aug 2012
- European eels > elversAnguilla anguilla18 siteslatest 28 Aug 2025
- European elversAnguilla anguilla11 siteslatest 28 Aug 2025
- MinnowPhoxinus phoxinus8 siteslatest 28 Aug 2025
- Brook lampreyLampetra planeri3 siteslatest 6 Jul 2009
- Brook lamprey ammocoetesLampetra planeri3 siteslatest 18 Aug 2023
- FlounderPlatichthys flesus2 siteslatest 14 Aug 2024
- 3-spined sticklebackGasterosteus aculeatus1 sitelatest 7 Aug 2018
- Lamprey sp. > ammocoetePetromyzontidae1 sitelatest 22 Jul 2010
Surveyed sites on this water
33 shown, newest survey first
Treby Ham
- Survey events
- 17
- Observed taxa
- 9
- Latest survey
- 28 Aug 2025
Putta Pool
- Survey events
- 18
- Observed taxa
- 6
- Latest survey
- 15 Aug 2025
Challonsleigh
- Survey events
- 3
- Observed taxa
- 4
- Latest survey
- 24 Sept 2024
Woodburn Farm
- Survey events
- 2
- Observed taxa
- 3
- Latest survey
- 24 Sept 2024
Yealmbridge
- Survey events
- 2
- Observed taxa
- 5
- Latest survey
- 28 Aug 2024
Yealmpton
- Survey events
- 2
- Observed taxa
- 4
- Latest survey
- 28 Aug 2024
D/S Puslinch Br
- Survey events
- 2
- Observed taxa
- 7
- Latest survey
- 14 Aug 2024
Puslinch Bridge
- Survey events
- 14
- Observed taxa
- 11
- Latest survey
- 14 Aug 2024
D/S Potsons Wood
- Survey events
- 2
- Observed taxa
- 4
- Latest survey
- 5 Aug 2024
Potsons Wood
- Survey events
- 15
- Observed taxa
- 10
- Latest survey
- 5 Aug 2024
D/S Putta Pool
- Survey events
- 2
- Observed taxa
- 4
- Latest survey
- 18 Jul 2024
D/S South Hele
- Survey events
- 2
- Observed taxa
- 4
- Latest survey
- 18 Jul 2024
U/S Treby Ham
- Survey events
- 2
- Observed taxa
- 4
- Latest survey
- 18 Jul 2024
South Hele
- Survey events
- 11
- Observed taxa
- 5
- Latest survey
- 8 Aug 2022
Downstream Hitchcombe Unidentified Outfall
- Survey events
- 1
- Observed taxa
- 3
- Latest survey
- 17 Sept 2014
Downstream Strashleigh Hams Landfill Site
- Survey events
- 1
- Observed taxa
- 4
- Latest survey
- 17 Sept 2014
Upstream Hitchcombe Tributary
- Survey events
- 1
- Observed taxa
- 5
- Latest survey
- 17 Sept 2014
Upstream Lee Mill STW Pumping Station
- Survey events
- 1
- Observed taxa
- 5
- Latest survey
- 17 Sept 2014
Upstream Mackarell Parks Wood Stream
- Survey events
- 1
- Observed taxa
- 2
- Latest survey
- 17 Sept 2014
Yealmpton Mill
- Survey events
- 4
- Observed taxa
- 5
- Latest survey
- 2 Sept 2014
u/s Dendles Wood
- Survey events
- 3
- Observed taxa
- 2
- Latest survey
- 27 Aug 2014
Southwood Wood
- Survey events
- 3
- Observed taxa
- 6
- Latest survey
- 5 Aug 2014
200m u/s Long Brook confluence
- Survey events
- 1
- Observed taxa
- 4
- Latest survey
- 6 Aug 2012
20m d/s Yealm Bridge
- Survey events
- 1
- Observed taxa
- 3
- Latest survey
- 6 Aug 2012
50m d/s Lotherton Bridge
- Survey events
- 1
- Observed taxa
- 3
- Latest survey
- 6 Aug 2012
50m u/s Yealmpton Mill EF site
- Survey events
- 1
- Observed taxa
- 3
- Latest survey
- 6 Aug 2012
70m d/s Yealmpton Mill EF site
- Survey events
- 1
- Observed taxa
- 3
- Latest survey
- 6 Aug 2012
U/s Worston Mill Footbridge
- Survey events
- 1
- Observed taxa
- 3
- Latest survey
- 6 Aug 2012
u/s Blachford Lake
- Survey events
- 3
- Observed taxa
- 5
- Latest survey
- 14 Oct 2010
Dendles Wood
- Survey events
- 3
- Observed taxa
- 3
- Latest survey
- 6 Aug 2009
Fernfires Wood
- Survey events
- 1
- Observed taxa
- 1
- Latest survey
- 15 Aug 2008
Woodburn
- Survey events
- 1
- Observed taxa
- 3
- Latest survey
- 3 Aug 2006
d/s Blachford Lake
- Survey events
- 2
- Observed taxa
- 3
- Latest survey
- 3 Aug 2006
Provenance
Source and licence
- SourceEnvironment Agency Ecology & Fish Data
- LicenceOpen Government Licence v3.0
- Source copy retrieved23 Jul 2026
- Waterbody nameAs published by the Environment Agency
- Not assertedCurrent presence, access, permission, fishing quality or safety