Aqualf
Midwest Wetland Delineations
About
This app streamlines wetland determination fieldwork by replacing paper forms with a digital workflow. It automates calculations for various tests and indicators, pulls site data from GPS coordinates, and generates official PDF reports. Your data is stored locally for privacy.
What's New in Aqualf
1.1.0
November 9, 2026
New: Pull Site Data. Tap one button on a new sample point (or on an existing plot’s Summary tab) to auto-fill PLSS, soil map unit, NWI classification, and MLRA from your current GPS location - pulled from public USDA, USFWS, and BLM data services. New: Terms & Conditions. A one-time acceptance screen on first launch, also available anytime from the Help tab. Fixed: Hydric soil wasn’t registering “Yes” in the Summary or PDF when only a Problematic Hydric Soil Indicator (including “Other”) was checked. Fixed: The keyboard was covering Remarks fields instead of scrolling them into view. Improved: Vegetation species and soil horizons can now be tapped to edit in place, instead of only delete-and-re-enter. Duplicating a plot now offers to open the copy directly.
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FAQ
What is Aqualf?
Aqualf is a mobile application designed to replace the paper USACE Midwest Region Wetland Determination Data Form. It provides a structured, on-device workflow for field data collection and analysis.
Does Aqualf have ads?
No, Aqualf is ad-free. The application does not contain any advertisements, allowing for an uninterrupted user experience during fieldwork.
What calculations does Aqualf automate?
Aqualf automatically calculates the Dominance test, Prevalence Index, FAC-neutral test, and hydric soil indicators as you enter data, providing real-time determination insights.
What data sources does Aqualf use for site data?
When you pull site data, Aqualf uses your GPS coordinates to auto-suggest information sourced from BLM, USFWS, and USDA public data services, including PLSS location, soil map unit, NWI classification, and MLRA.
How is my data handled in Aqualf?
Your project and plot data are stored locally on your device. Aqualf does not use servers, telemetry, or require an account, ensuring your data remains private and secure.
What standards does Aqualf follow?
Aqualf is built on current standards, with hydric soil indicators following USDA-NRCS Field Indicators of Hydric Soils, Version 9.3 (2026), and hydrology indicators following the USACE Midwest Region Regional Supplement, Version 2.0.
Can I export my data from Aqualf?
Yes, Aqualf allows you to export a clean PDF of your wetland determination data that mirrors the official USACE layout, ready for inclusion in permit applications or project reports.
What devices is Aqualf compatible with?
Aqualf is available for iPhone, iPad, and iPod devices, making it accessible for a wide range of iOS users in the field.
