Ogee Spillway Designxls Better !full! Jun 2026

Q=CLeHd1.5cap Q equals cap C cap L sub e cap H sub d to the 1.5 power : Design discharge (volume per unit time).

The design focuses on creating a profile that matches the lower nappe of a fully ventilated weir. : is discharge, is the discharge coefficient, Lecap L sub e is the effective length, and Hecap H sub e is the head over the crest. Discharge Coefficient (

Do you need assistance setting up the specific or Goal Seek steps for the rating curve calculations? Share public link

: These calculate the water profile (upper nappe) and spillway shape (lower nappe) based on USBR standards. ogee spillway designxls better

Ensures that pressures are above the threshold for cavitation. 4. Best Practices for Developing Your XLS Tool

). An ideal ogee profile minimizes energy loss, allowing a high discharge rate at a lower water head compared to other shapes [1]. The profile is generally divided into two main parts:

An ogee spillway features an S-shaped (or ogee) profile. The top curve mirrors the natural underside of a water sheet flowing over a sharp-crested weir. This specific geometry ensures that flowing water remains in constant contact with the concrete structure. Why the Shape Matters Eliminates negative pressure zones. Q=CLeHd1

Once the "ogee spillway design XLS" tool has generated the optimal

Q=C⋅L⋅He1.5cap Q equals cap C center dot cap L center dot cap H sub e to the 1.5 power = Total discharge capacity (

Using an Excel-based template for ogee spillway design offers distinct advantages over proprietary software or manual calculation methods. 1. Instant Iteration and Parametric Feedback Discharge Coefficient ( Do you need assistance setting

Constructing a spillway requires transferring coordinate tables to drafting tools like AutoCAD or Civil 3D. Excel formats coordinate data directly into

across a wide spectrum of water surface elevations, outputting a precise rating curve essential for reservoir routing calculations. Feature Comparison: Excel vs. Commercial Software Feature Vector Excel Spreadsheet ( .xls ) Specialized Hydraulic Software Instantly accessible Long installation & license activation Formula Auditability Open-source, cell-by-cell verification Closed-source, hidden calculations Parametric Optimization Extremely fast using native Excel Solver Slow, manual geometry rebuilding Output Flexibility Native copying to Word/PDF reports Rigid, pre-formatted PDF exports Cost Profile Free (Leverages existing office suite) Expensive recurring annual licensing Best Practices for Building a Robust Design Sheet

Use Excel for what it is good for:

Q=CLeHe3/2cap Q equals cap C cap L sub e cap H sub e raised to the 3 / 2 power : Discharge coefficient, typically around for ogee crests at design head. Lecap L sub e : Effective length, adjusted for contractions from piers ( Kpcap K sub p ) and abutments ( Kacap K sub a