The Cardington Artificial Slalom Course (CASC), located on the River Great Ouse within Priory Country Park just outside Bedford, is the first man-made whitewater course in the UK, opened in 1982.

The 120-metre S-shaped channel is gravity-fed by the natural drop in the river and requires no pumping, also serving as a flood relief channel in partnership with the Environment Agency.

Movable boulders fixed to the base allow different course configurations, with a maximum drop of 1. 7 metres. The course carries a JS Grade B rating, indicating slightly moving water with eddy lines and small drops.

CASC is the home venue of Viking Kayak Club, which organises national ranking canoe slalom events here, and hosts the annual Inter Clubs Slalom Finals — the largest canoe slalom event by participation in the UK.

Camping and caravanning are available on site within Priory Country Park, which is noted for wildlife including deer, otters, foxes, and diverse bird species.