Compound Rating Curve (Backwater & Control Changes) — Tools for Engineers

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Advanced Water Surface Profile Anti‑Scour / Scour Depth – Multi‑Formula Tool Anti‑Scour / Scour Depth – Theory & Design Notes Boussinesq Vertical Stress Distribution Boussinesq Vertical Stress Distribution Broad-Crested & Sharp-Crested Weir (Full Suite) CALCULATION OF DISCHARGE Cofferdam Seepage & Uplift Checks Compound Rating Curve (Backwater & Control Changes) Culvert / Outlet Sizing – Orifice, Weir & Manning Darcy–Weisbach Headloss DISCHARGE & CRITICAL DEPTH DISCHARGE & NORMAL DEPTH Draft Tube Submergence – Cavitation Check THOMA σ DS Stilling Basin – Water Level & Rating Curve Embankment / Guide Bund Cross‑Section & Stability – Quick Check Flood Embankment / Levee Crest Level & Freeboard – Quick Tool Flow Duration → Annual Energy Yield Gravity Dam Foundation Uplift & Seepage GVF Profile (Rectangular / Trapezoidal) Headworks Nav Headworks Stilling Basin Checker & Preliminary Design Hydraulic Jump & Stilling Basin – Quick Design Hydraulic Jump & Stilling Basin – Theory & Design Notes Hydro Energy from Flow Duration Hydropower Headworks – Design Workflow & Toolbox Hydropower Net Head & Power Estimator Auto-calc Share Link PDF Hydrostatic Pressure + Resultant (Vertical Wall) Khosla Seepage & Uplift Tool (End Piles + Optional Intermediate Pile) Open Channel Flow – Manning (Rectangular & Trapezoidal) Penstock Saddle Support Design & Spacing Penstock Wall Thickness & Stress Check Pump Power & NPSH Calculator Rational Method – Peak Discharge Tool Reservoir / Detention Basin Routing – Modified Puls Riprap & Launching Apron Design – Quick Tool Riprap & Launching Apron Design – Theory & Notes Scour / Anti‑Scour Depth & Velocity – Multi‑Formula Tool SCS Curve Number – Runoff Depth & Volume Tool Seepage Analysis Tool Sharp‑Edged Orifice (Free & Submerged – Advanced) Slope Stability Analysis Geotechnical Engineering Stilling Basin Type Selector (IS / USBR) – Advanced Tool Surge Tank Sizing (Advanced) Advanced Design Surge Tank Sizing (Advanced) Advanced Design Surge Tank – Simple Sizing Mass Oscillation Tool Disclaimer USBR Stilling Basin Dimensioning – Advanced Tool Water Hammer / Surge Pressure – Quick Check Water Surface Profile (Advanced GVF) Water Surface Profile (Advanced GVF) Weir Rating & Water Level Solver (US Standards) Weir Rating (Bottom Intake + Overflow) — TEL Match Weir Rating Curve Builder & Shift Manager Weir Rating — Compound (Auto Cd + WL Solver) Weirs & Orifices

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