Playspot

In kayaking, a playspot is a place where there are favorable stationary features on rivers, in particular standing waves (which may be breaking or partially breaking), 'holes' and 'stoppers', where water flows back on itself creating a retentive feature (these are often formed at the bottom of small drops or weirs), or eddy lines (the boundary between slow moving water at the rivers' edge, and faster water).
Playspots exist both in natural and artificial whitewater.
Playboating.
Playboating is sometimes performed on dynamic moving features such as haystacks (large boils) and whirlpools, or on flat water (this is often referred to as flatwheeling). Playspots are found on natural whitewater, on artificial weirs, on artificial whitewater courses, and occasionally on tidal races in the sea.
Popular Playspots.
Natural year-round playspots.
Europe
North America
Further natural year-round playspots
High volume rivers.
Many high-volume rivers are often run for their playspots:
Africa
North America
Tidal races.
Europe
North America
Others.
The Tryweryn in Wales, the Dee near Llangollen in Wales, the Washburn in England, and Hambledon Weir on the Thames have been modified (by moving boulders on the river bed, or in the case of Hambledon by installing pneumatic kicker ramps on the river bed) to create better playspots.
Construction has been completed on Brennan's Wave a project in Missoula, USA, that is converting a broken diversion dam into a playpark for kayakers.