Delta Hydro Studio
Browser-based hydrology and hydraulics calculators for practising engineers — no install, report-ready output.
The US land-development standard for TR-55/TR-20 hydrographs and detention pond design.
by HydroCAD Software Solutions
HydroCAD is the tool a huge share of US site-civil drainage reports are built in: SCS/NRCS hydrology (TR-55/TR-20 procedures), rational method, hydrograph routing through ponds and reaches, outlet-structure hydraulics with composite rating curves, and clean report output reviewers recognise on sight.
Its focus is the land-development detention workflow — model the site, size the pond, tune the outlet, print the package — and within that focus it is extremely efficient. It is Windows-only commercial software with a free sampler edition for evaluation.
Ranked by the topics, categories and workflow stages they share with HydroCAD.
Browser-based hydrology and hydraulics calculators for practising engineers — no install, report-ready output.
Storm and foul water drainage design and 1D hydraulic modelling software for UK and Irish civil engineers.
Hydrologic modeling software for urban and rural stormwater management, master drainage planning, and pond design.
NRCS's official implementation of TR-55 small-watershed hydrology: peaks, hydrographs and storage.
CDM Smith's free rainfall statistics and STORM-method screening model — IDF analysis, disaggregation, CSO planning.
EPA's free tool for estimating site runoff reduction from green infrastructure, with climate scenarios.