The River Cassley is a spate river in Sutherland, northern Scotland, known for its fast-flowing runs and rocky character that attracts salmon and sea trout anglers, particularly during autumn and winter months when water levels rise. The river offers an exciting and challenging fishing experience with good pools interspersed with turbulent sections, though success is heavily dependent on recent rainfall. Access is generally by arrangement with local estates and ghillies, with most fishing controlled by private beats requiring permits and often professional guidance.
River Cassley observes the standard close season: 15 March – 15 June (rivers, England & Wales). Always check local byelaws before your visit. A rod licence alone does not grant access — most stretches require club membership or a day ticket in addition.
Water level data from the Environment Agency Real Time Flood Monitoring API. Nearest gauging station. Always verify conditions on arrival.
Filter by water type, species and access. View River Cassley and thousands of other UK fishing venues on the interactive map.
River Cassley holds atlantic salmon, sea trout, brown trout.
An EA rod licence is required by law to fish River Cassley. Club membership or a day ticket is also required on most stretches.
To fish River Cassley, 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 River Cassley.
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 River Cassley.
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