The Tresillian River is a picturesque tidal estuary in Cornwall, stretching 5.5km through varied habitat offering a genuine saltwater and brackish fishing experience. The tidal nature creates dynamic fishing conditions with regular flow changes that concentrate fish in productive zones. This characterful water provides opportunities for both conventional freshwater species and marine visitors attracted by the estuary environment.
The statutory close season on Tresillian River runs No close season (tidal waters). No coarse fishing is permitted during this period. Beyond the rod licence, fishing rights on Tresillian River are typically held by local angling clubs — check with the relevant club or day ticket provider before visiting.
Water level data from the Environment Agency Real Time Flood Monitoring API. Nearest gauging station. Always verify conditions on arrival.
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Tresillian River holds sea trout, brown trout, flounder, mullet, bass, pollack, mackerel.
An EA rod licence is required by law to fish Tresillian River. Club membership or a day ticket is also required on most stretches.
To fish Tresillian River, you need a valid EA rod licence, available online from gov.uk. Annual, day and 8-day licences are available. In addition to the rod licence, you will need club membership or a day ticket from the controlling angling club or riparian owner for most stretches of Tresillian River.
Always check conditions before you visit. Water quality, access and rules can change seasonally. The EA's Catchment Data Explorer provides up-to-date water quality information for Tresillian River.
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