Safety

RMF Calculator — regional maximum flood envelope estimates

Regional maximum flood estimates for extreme-event checks using envelope-style approaches applied in South African practice.

What is RMF Calculator?

Regional maximum flood estimates for extreme-event checks using envelope-style approaches applied in South African practice.

When would you use this?

  • You need an independent envelope check against statistical flood frequency.
  • Extreme flood screening for high-consequence structures.

How Delta Hydro Studio handles it

  • Clear assumptions and reproducible parameters.
  • Designed to sit alongside FFA and PMP workflows.

How to use it

  1. 1

    Enter catchment descriptors required by the RMF methodology.

  2. 2

    Review envelope estimates against your other flood hypotheses.

  3. 3

    Document parameters for third-party review.

  4. 4

    Export summary tables for reporting.

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 RMF Calculator?

Free tier available — no credit card required to explore.

FAQ

Do I need a desktop GIS install to use RMF Calculator? +
No. Delta Hydro Studio runs in the browser — upload inputs, run calculations, and export professional outputs without local GIS installs for most workflows.
Is there a free tier? +
You can start free on the Stream plan with credits to explore tools. Several hydraulic and delineation tools remain accessible without a paid subscription.
Where are my data and calculations stored? +
Projects live in your Delta Hydro Studio workspace. Export Word, Excel, and GIS formats when you need offline archives or submittals.

Related tools

Ship compliant studies faster

Create your workspace on the Stream plan, then open RMF Calculator when you are ready to run production calculations.