What is Tc Calculator?
Time of concentration using multiple published approaches including Kirpich, Bransby-Williams, SCS lag, Kerby, Giandotti, and helpers tied to flowpaths.
When would you use this?
- When you need defensible, documented hydrology or hydraulics inside a browser workflow.
- When spreadsheets and desktop GIS are slowing down QA and client deliverables.
How Delta Hydro Studio handles it
- Tc: covered in the Delta Hydro Studio workspace for this tool.
- Kirpich: covered in the Delta Hydro Studio workspace for this tool.
- SCS lag: covered in the Delta Hydro Studio workspace for this tool.
How to use it
- 1
Open the tool inside Delta Hydro Studio and create or select a project.
- 2
Follow the guided inputs — maps, tables, and defaults reduce manual data entry.
- 3
Run the calculation and review plots, diagnostics, and intermediate checks.
- 4
Export Word, Excel, or GIS outputs for your report appendices.
Methodology & references
Full equations, assumptions, and literature references appear inside the in-app methodology panels for this tool, aligned with South African guidance (SANRAL TRH, SANCOLD, DWS technical manuals) and international references (USDA NRCS, FHWA HDS) where applicable.
Outputs & exports
Export professional Word and Excel report packs, tabulated results, and GIS-friendly layers depending on the tool. Screenshots in marketing materials are refreshed as the UI evolves — the studio always reflects the latest layout.
Ready to run Tc Calculator?
Free tier available — no credit card required to explore.