The FEH statistical method, with QMED locked to WINFAP 5 within 1.2% across 97 validation tests. Pooling, growth curves and climate change allowances, computed in seconds and presented as a decision tree. The modern platform UK flood risk professionals have been waiting for.
Flood risk professionals deserve better than legacy desktop tools, manual Excel workflows, and opaque pricing.
Windows-only tools from the 2000s. WINFAP crashes mid-analysis. ReFH2 has no undo. Nothing runs on Mac or web.
Copy-paste results between WINFAP, ReFH2, and FEH Web Service. Format tables by hand. Repeat for every project.
Multi-thousand pound annual licences. Per-seat fees. No public pricing - you have to phone for a quote.
Emailing .xml files around. No version history. No way to share an analysis or review a colleague's work.
The FEH statistical method and climate change allowances in one platform, verified against WINFAP 5 - run them in parallel and compare results instantly. Rainfall-runoff models are in active development.
QMED, donor adjustment, pooling, growth curves and design flows - plus climate change allowances. Rainfall-runoff models (ReFH, SCS, IOH 124) are in active development.
The statistical pathway runs end to end - QMED, growth curves, design flows and climate scenarios - computed in ~15 seconds.
Built on the current SM2025 equations. QMED locked to WINFAP 5 within 1.2% across 97 validation tests - updated descriptors, donor adjustment and pooling.
Rule-based hints flag discordant pooling stations, heterogeneity and outliers. A read-only assistant explains your analysis - you decide.
Vector tile maps with 1,500+ NRFA stations. Catchment boundaries, LiDAR overlays, spatial search.
D3-powered growth curves, hydrographs, and L-moment diagrams. Export-ready for FEH technical notes.
Drag and drop .xml files. Edit catchment boundaries on-map. Import descriptors automatically.
FEH technical notes generated from your analysis. Graphs, tables, methodology - no more copy-paste.
What used to take hours of switching between tools now takes seconds.
Search 1,500+ NRFA stations by name, river, or grid reference. Or import a .xml catchment boundary for ungauged sites.
QMED (SM2025), donor adjustment, pooling groups, growth curves and climate change - all in ~15 seconds.
See every pathway explored, every alternative considered. Select your preferred method and generate a complete FEH technical note.
See how Hydrometric compares to the traditional workflow.
Hydrometric is in preview ahead of launch in October 2026. Join the waitlist for 5 free assessments.
Every assessment Hydrometric runs in the browser is also available to any LLM harness, on the same frozen dataset and the same audited method. The hydrologist stays in control: agents get the default route, and every adopted choice is recorded.
Method Space via API: compare any result - including a competitor's - against the Hydrometric default and the full method space, £20 per run.
Developer docs{
"mcpServers": {
"hydrometric": {
"url": "https://www.hydrometric.io/api/mcp",
"headers": {
"Authorization": "Bearer hm_live_…"
}
}
}
}The calculation engine is open source. Every formula, every coefficient, every assumption is auditable. No black boxes. Trust but verify.
Every formula is open source and auditable.
QMED locked within 1.2% across 97 validation tests.
Built by practitioners, for practitioners.
Join the preview ahead of launch in October 2026. The hydrologist stays in control - every default is visible, every override recorded.