HY8:USBR Type III Stilling Basin

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The only input variable required for this calculation is the following:

  • Basin Width


Variables from the figure

  • W1 — width of the chute blocks
  • W2 — space between chute blocks
  • h1 — height of the chute blocks
  • W3 — width of the chute blocks
  • W4 — space between chute blocks
  • h3 — height of the baffle blocks
  • h4 — height of the end sill
  • LB — Length of the bottom of the basin
  • y2 — Conjugate depth