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The primary volumetric capacity of an uncontrolled ogee spillway is governed by the specialized weir flow formula:

Beichley and A. J. Peterka; Hyd-445 dated April 28, 1961, by A. J. Peterka; Hyd-446 dated April 18, 1960, by G. L. Beichley and A. Bureau of Reclamation (.gov) (PDF) Ogee Spillway Profile: Spreadsheet - ResearchGate ogee spillway designxls install

, or overflow spillway, is a critical hydraulic structure used primarily with gravity dams to release excess floodwater safely. Its characteristic S-shaped profile is designed to mimic the lower nappe of a freely falling water jet, ensuring the water maintains contact with the structure to prevent cavitation and sub-atmospheric pressure. Modern engineering relies on Excel-based tools (XLS) to automate the complex iterative calculations required for these profiles. 2. Core Design Principles The primary volumetric capacity of an uncontrolled ogee

The primary volumetric capacity of an uncontrolled ogee spillway is governed by the specialized weir flow formula:

Beichley and A. J. Peterka; Hyd-445 dated April 28, 1961, by A. J. Peterka; Hyd-446 dated April 18, 1960, by G. L. Beichley and A. Bureau of Reclamation (.gov) (PDF) Ogee Spillway Profile: Spreadsheet - ResearchGate

, or overflow spillway, is a critical hydraulic structure used primarily with gravity dams to release excess floodwater safely. Its characteristic S-shaped profile is designed to mimic the lower nappe of a freely falling water jet, ensuring the water maintains contact with the structure to prevent cavitation and sub-atmospheric pressure. Modern engineering relies on Excel-based tools (XLS) to automate the complex iterative calculations required for these profiles. 2. Core Design Principles