Trapezoidal Channel Manning Normal & Critical Depth Energy Calculator

Use this endpoint when you need precise hydraulic computations for a trapezoidal open channel cross-section, specifically when both normal depth and critical depth are needed simultaneously along with energy and flow regime classification. Prefer this over generic fluid dynamics tools when the channel geometry is explicitly trapezoidal and Manning's equation is the governing flow model.

• Discharge too low or too high (outside 0.000001–1,000,000 range) returns validation error
• Bottom width outside 0.01–10,000 m range returns schema error
• Manning's n outside 0.001–1 range returns invalid input error
• Bed slope at or below 1e-8 or above 0.5 triggers range validation failure
• Side slope above 10 or below 0 returns invalid parameter error
• Gravity outside 0.1–100 range returns validation error
• Non-convergence of iterative normal depth solver may return computation error