a deep section of water on a river, noted for fish and sometimes noted for danger or treacherous water; perhaps used for swimming in conjunction with bankside picnics or outings; sometimes also a pocket valley in a mountainous area: as in the Blue Hole (Sherwood).

The hollow area on the downstream side of a boulder or ledge and upstream side of a stopper wave.

(also POCKET) Solidly between the 1-3 pins for right-handers and between the 1-2 for left-handers.

A reversal. This term is generally applied to reversals of less than river wide width. See Souse Hole.

also known as a hydraulic or a reversal, usually forming on the downstream side of good-sized rock. Fast water passing around the obstacle and headed downstream is pulled back to fill the vacuum behind the rock. Generally the bigger the drop and faster the current, the more violent the "infilling" action.

a place in a river where the river level drops sharply

The strike pocket.

A water feature where water moving downstream is countered by water rushing back upstream to meet it.

A dangerous and turbulent river feature, usually formed behind large rocks or other obstructions. Normally to be avoided, a hole can suck a kayak beneath the water and hold it there. Playboaters, on the other hand, often seek out holes where they can pop "enders". See Enders.

Where water flowing over a rock or other obstacle flows down, then back onto itself in an eruption of whitewater

A depression in the river caused by reverse water flow. Also may be called a hydraulic.

A swirling vortex of water where the river pours over an obstacle and drops toward the river bottom, leaving a pocket behind the obstacle into which an upstream surface current flows.

A vertical reversal of water flow. The pressure of the current falling over a gradient (such as a rock or dam) causes the channel water at the base of the gradient to be forced downward into a loop and back up to the surface. At this point some of the water continues downstream, and some flows back upstream to the base of the gradient. See Hydraulic

The cards that are dealt to you face down (also Pocket)

Same as pocket.

normally formed on the downstream side of a rock or underwater obstruction, there is usually a stopper on the downstream side of a hole.

a hole is created when the river current drops over a rock or ledge and circulates instead of continues its downstream flow. A significant feature because it either offers play opportunities or danger of trapping, depending on the power of the hole.

hueco—kayaking

Holes, often referred to as "souse-holes", or "stoppers", are formed when water pours over the top of a submerged object, causing the water downstream to flow back over the top of the water which rushes over the submerged object. Holes can be particularly dangerous: a boater may become stuck in the recirculating water. In high volume water, holes will dramatically aerate the water, possibly to the point where it may even lose the capacity to carry any water crafts.