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Stage-discharge equations list

Equation Default discharge coefficient Available in
Broad-crested weir / Orifice (Cemagref-D) 0.4 Parallel Structures
Broad-crested weir / sluice gate (Cemagref-V) 0.6 Parallel Structures
Broad-crested weir / orifice (Cunge) 0.6 Parallel Structures, Cross walls, Downwall
Free flow sluice gate 0.6 Parallel Structures
Submerged sluice gate 0.8 Parallel Structures
Free flow sharp-crested weir (Poleni) 0.4 Parallel Structures, Free flow weir stage-discharge laws
Deeply submerged sharp-crested weir (Rajaratnam) 0.9 Parallel Structures
Submerged slot (Larinier) 0.75 Parallel Structures, Cross walls, Downwall
Sharp-crested weir (Kindsvater-Carter + Villemonte) \(\alpha\)=0.4, \(\beta\)=0.001 Parallel Structures
Triangular weir sharp-crested (Villemonte) and broad-crested (Bos) 1.36 Parallel Structures, Free flow weir stage-discharge laws, Cross walls, Downwall
Truncated triangular weir (Villemonte) 1.36 Parallel Structures, Free flow weir stage-discharge laws, Cross walls, Downwall
Submerged orifice (Bernoulli) 0.7 Parallel Structures, Cross walls, Downwall
Free flow orifice (Bernoulli) 0.7 Parallel Structures
Sharp-crested weir (Villemonte) 0.4 Parallel Structures, Cross walls, Downwall
Regulated notch (Villemonte) 0.4 Downwall
Regulated submerged slot (Larinier) 0.75 Downwall

Table: Stage-discharge equations list