text: While travelling down river, kayaking and canoeing paddlers will often stop and playboat in standing waves and hydraulic jumps. The standing waves and shock fronts of hydraulic jumps make for popular locations for such recreation.
  Similarly, kayakers and surfers have been known to ride tidal bores up rivers.
  Hydraulic jumps have been used by glider pilots in the Andes and Alps and to ride Morning Glory effects in Australia.