Comparison of stepped and smooth spillway effects on stream reaeration

Aras E. , Berkun M.

WATER SA, vol.36, no.3, pp.309-313, 2010 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 36 Issue: 3
  • Publication Date: 2010
  • Title of Journal : WATER SA
  • Page Numbers: pp.309-313


The oxygen transfer at a hydraulic structure happens by self-aeration through the spillway and by flow aeration in the hydraulic jump downstream of the hydraulic structure. Spillways with their water-air controlling mechanisms are important not only for their structural properties but also for their effects on stream ecology. Spillway types also affect the efficiency of aeration. Decisions on the types of spillway should be made by taking the environmental conditions and flow rates into consideration.