Geo-Marine Letters

, Volume 7, Issue 4, pp 217–222 | Cite as

Magnitude-frequency relationship of coastal sand delivery by a southern California stream

  • Douglas W. Stow
  • Howard H. Chang


Coastal sand delivery by a stream in southern California is estimated based on a numerical model which stimulates unsteady flow, sediment transport, and the associated channel adjustments for a stream-delta system. An average annual sediment yield of 51,400 m3/yr is estimated for the San Dieguito River, which drains a semiarid watershed controlled by dams. Of the total sand delivery by the stream, 20.5 percent is contributed from floods greater than the 100-year flood; 17.6 percent from those between the 50- and 100-year events; 28.4 percent from those between the 25- and 50 year floods; and 33.5 percent from those smaller than the 25-year flood.


Numerical Model Sediment Transport Sediment Yield Unsteady Flow Annual Sediment 
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Copyright information

© Springer-Verlag New York Inc 1987

Authors and Affiliations

  • Douglas W. Stow
    • 1
  • Howard H. Chang
    • 1
  1. 1.San Diego State UniversitySan Diego

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