Stormweir: Runoff Lab

iOS app by Shadowfetch · App Store ID 6792826802 · iOS

Stormweir: Runoff Lab is a focused, fully on-device app. Civil stormwater workbench for Rational Method runoff, NRCS curve-number screening, detention routing, orifice/weir discharge, Manning channels, and storm scenarios.

Key Features

Rational and curve-number screens
Editable inflow/outflow routing
Orifice and storage metrics
Site-photo evidence
Editable sample data and CSV import
Side-by-side scenario comparison
Local PDF evidence export
Fifty-three original offline reference plates

One-Time And Private

One paid download; no subscription or in-app purchase
No account, advertising, analytics, tracking, or developer-operated backend
Core features and bundled content work offline
Work remains on device unless you deliberately share or export it through an Apple system interface

Hydraulic estimates are planning aids and do not predict flood safety. Verify survey data, rainfall criteria, local regulations, tailwater, blockage, and professional design review.

Get it. Stormweir: Runoff Lab is on the App Store for iPhone and iPad.

Privacy and support

Privacy information for Stormweir: Runoff Lab · Support for Stormweir: Runoff Lab

Questions: shadowfetchapps@gmail.com

Stormweir: Runoff Lab · App Store ID 6792826802 · Published by Shadowfetch · shadowfetch.com