Windows often blocks downloaded .xlsm files.

The installation and use of Ogee Spillway Design.xls represent a practical application of digital tools to classical hydraulic engineering. By following the steps outlined—extracting the file, enabling macros, installing Solver, and verifying units—an engineer can rapidly produce a hydraulically efficient ogee crest profile. However, the spreadsheet is a means, not an end. The professional must remain aware of its assumptions, validate outputs against published design charts (e.g., USBR Design of Small Dams), and never rely solely on a single file for final construction plans. When used responsibly, this spreadsheet transforms a tedious iterative calculation into an efficient, transparent, and repeatable engineering process—embodying the best of modern computational aids in civil infrastructure design.

Design spreadsheets are typically distributed as .xls or compressed .zip files through engineering communities and academic repositories.

Do not assume it works simply because it opened. Enter standard test values:

: Computes the flow rate using the standard weir equation: .

: Use the standard power-law equation for the downstream quadrant: