HydroCore: Hydraulics Calc

Fast, accurate hydrology and hydraulics calculations for civil engineers, water resources engineers, students, and site professionals — no spreadsheets required.

HydroCore Calculator replaces repetitive manual math and error-prone spreadsheets with instant, reliable results for design checks, field verification, and classroom work. Built specifically for real civil engineering workflows, using the formulas you already know and trust.

Core Formulas Included:
- Manning's Equation — open channel and pipe flow
- Rational Method — peak runoff estimation
- Hazen-Williams Equation — head loss and flow rate
- Colebrook-White Equation — friction factor calculations
- Weir Flow — discharge calculations
- Orifice Flow — discharge and velocity

Built for Professional Use:
- Dual unit systems: SI (Metric) and US (Imperial)
- Export results directly to PDF for reports and field records
- Material presets for Manning roughness coefficient (n)
- Return period factor support in Rational Method calculations
- Built-in warnings flag unusual or unrealistic input ranges before they become costly mistakes
- Clean, field-friendly interface — no unnecessary complexity, just the results you need
- 100% offline — works without signal on remote sites

Who Uses HydroCore:
- Civil engineers
- Hydraulics and water resources engineers
- Drainage and stormwater designers
- Construction and site engineers
- Engineering students and educators

Whether you're checking a design in the office, verifying conditions in the field, or working through coursework, HydroCore Calculator gives you consistent, repeatable results in seconds instead of minutes — without opening a spreadsheet.

Important: This app is intended for preliminary calculations, educational use, and quick engineering checks. Always verify final design decisions using applicable codes, standards, project requirements, and professional engineering judgment.

Searching for a reliable Manning's equation calculator, Rational Method runoff calculator, Hazen-Williams calculator, or open channel flow calculator? HydroCore covers all of it in one offline tool — built for engineers, by engineers.

What's New (Version 1.0.1)
- Initial public release of HydroCore Calculator
- Added Manning, Rational, Hazen-Williams, Colebrook-White, Weir, and Orifice calculations
- Added SI and US unit support
- Added PDF export for calculation results
- Added smart warning messages and improved input validation
- Performance and UI improvements for fast engineering workflows