Delta Hydro Studio
FreemiumVerified
Browser-based hydrology and hydraulics calculators for practising engineers — no install, report-ready output.
5 tools · Topic
Open Channel Flow Calculators & Solvers
Normal depth, critical depth, gradually varied flow profiles and channel design — the bread and butter of hydraulic engineering. Listed here: HEC-RAS for water-surface profiles, the FHWA Hydraulic Toolbox for channel calculations, HY-8 for culvert crossings, and Delta Hydro Studio, which runs Manning’s equation and other open-channel checks in the browser.
FHWA Hydraulic Toolbox
Gov-Public
A free bundle of FHWA drainage calculators: channels, weirs, curb & gutter, riprap, detention and more.
HEC-RAS
FreeVerified
The world's most used hydraulic model: free 1D/2D river analysis, sediment, water quality and flood mapping.
HY-8
Gov-PublicVerified
FHWA's free culvert analysis program — the reference implementation of HDS-5 culvert hydraulics.
RIVIA
Open Source
A modern Python interface for HEC-RAS project parsing, simulation automation, and result visualization.