# Aqualf — Midwest Wetland Delineations > Digital wetland delineation form for USACE Midwest Region professionals. (iPhone/iPad app by Jason DeMoss.) - Source: https://appshunter.io/ios/app/aqualf/id6767928419 (this page in markdown: same URL + `.md`) - Developer: [Jason DeMoss](https://appshunter.io/developer/1895216165) - Category: Productivity, Reference - Price: Free - Rating: 5.00/5 from 1 App Store ratings - Age rating: 4+ - Requires: iOS 15.1 · 34 MB - Languages: English - Released: 2026-05-12 - Data updated: 2026-07-06 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/aqualf/id6767928419/reviews.md ## What is Aqualf? Aqualf is a professional field data entry app specifically for completing the USACE Midwest Region Wetland Determination Data Form (Version 2.0). Built by a Professional Wetland Scientist for environmental consultants and agencies on a budget! It replaces paper forms with a structured digital workflow designed to work entirely offline. No account, no internet, and no data ever leaving your device. WHAT AQUALF DOES -Project Management: Create projects and manage multiple sample plots per site. -Structured Entry: Enter field data across four tabs per plot: Hydrology, Vegetation, Soils, and Summary. -Auto-Calculations: Instant dominance test, prevalence index, and FAC-neutral test results as you enter vegetation data. -Hydric Soil Engine: Suggests hydric soil indicators (A1–F21) based on horizon data, evaluated against USDA NRCS Field Indicators of Hydric Soils v9.0 (2024). -Field Warnings: Flags complex indicators (A18, S6, F8, F12, F21) that require specific field confirmation, landform context, or regional testing before application. -Official PDF Export: Generates a multi-page PDF that mirrors the official USACE Midwest v2.0 form layout, ready for report attachment or permit application. -Seamless Sharing: Export via AirDrop, Files, email, or any standard iOS share sheet destination. PLANT DATABASE -Primary: 2,860-species Midwest National Wetland Plant List (USACE, 2022 edition). -Fallback: 37,109-species USDA PLANTS database for species not found on the regional NWPL (defaults to UPL). SOIL INDICATOR ENGINE -Suggestions are evaluated against USDA NRCS v9.3 (2026) criteria for the Midwest region, covering A, S, and F indicators. Tap any info button for the full criteria and technical field notes. FORM COVERAGE Full coverage of the Midwest v2.0 data form: -Project and site header (including Section, Township, and Range/PLSS). -All hydrology primary and secondary indicators with specific depth fields. -All four vegetation strata. -Detailed soil profiles with up to 12 horizons including matrix and redox data. -All standard and problematic hydric soil indicators. -Summary of findings and final determination. PRIVACY No backend, no account, and no telemetry. All field data is stored locally in SQLite on your device and is never transmitted to external servers. Only standard Apple App Store analytics (crash reports and performance) are collected. SCOPE & DISCLAIMER This version covers the USACE Midwest Region only. iOS only. For professional use by qualified wetland scientists. Aqualf has not been reviewed, approved, or endorsed by the U.S. Army Corps of Engineers, USDA-NRCS, or any other federal or state agency; no such review or approval has been sought or is implied. It is a field data entry tool and does not replace professional judgment or constitute a formal wetland delineation. The user assumes all responsibility for the accuracy and appropriate use of exported data. ## Key features - Offline data entry - Automated dominance and prevalence index calculations - Hydric soil indicator suggestions - Field warnings for complex indicators - Official PDF export - Extensive plant and soil databases ## Frequently asked questions about Aqualf ### What is Aqualf? Aqualf is a professional field data entry app designed for completing the USACE Midwest Region Wetland Determination Data Form (Version 2.0). It replaces paper forms with a structured digital workflow that operates entirely offline. ### Does Aqualf work offline? Yes, Aqualf is designed to work entirely offline. No account, internet connection, or data transfer is required, ensuring your field data stays on your device. ### What kind of calculations does Aqualf perform? Aqualf performs instant dominance test, prevalence index, and FAC-neutral test results as you enter vegetation data. It also suggests hydric soil indicators based on horizon data. ### Can I export my data from Aqualf? Yes, Aqualf generates an official multi-page PDF that mirrors the USACE Midwest v2.0 form layout. This PDF can be seamlessly shared via AirDrop, Files, email, or any standard iOS share sheet destination. ### What is the scope of Aqualf's coverage? This version of Aqualf covers the USACE Midwest Region only and is available exclusively for iOS devices. It is intended for professional use by qualified wetland scientists. ### How frequently is Aqualf updated? Aqualf was last updated on May 25, 2026, with version 1.0.1. The app is designed to support the latest USDA NRCS Field Indicators of Hydric Soils v9.0 (2024) and USDA NRCS v9.3 (2026) criteria. ### Is Aqualf suitable for beginners? Aqualf is intended for professional use by qualified wetland scientists. While it offers helpful suggestions and warnings, it does not replace professional judgment or constitute a formal wetland delineation. ### Does Aqualf have ads? No, Aqualf does not contain advertisements. The app is free to use and does not include any in-app purchases or ads. ## Version history (last 2 releases) ### 1.0.1 — 2026-05-25 What's New in Aqualf 1.0.1 - Plot Duplication - Long-press any sample plot on the project screen to duplicate or delete it. Duplicating copies all vegetation, soil profile, hydrology indicators, and summary data into a new plot. Rename it from the Summary tab and edit whatever differs. Useful for adjacent plots with similar vegetation or soil conditions. - PLSS Bulk Edit - Section, Township, and Range now flows from the project level down to individual plots automatically. Enter it once on the project and all new plots inherit it. The Edit Project screen also includes a new "Apply to All Plots" button to push the value to existing plots in one tap. - New App Icon - Fresh icon for v1.0.1. - Hydric Soil Engine Update - Indicator logic updated to USDA-NRCS Field Indicators of Hydric Soils v9.3 (2026). The A18 (Iron Monosulfides) suggestion trigger has been tightened to more accurately reflect the published field criteria. Other Problematic Hydric Indicator - "Other (Explain in Remarks)" has been added to the Problematic Hydric Soil Indicators checklist, with a reference modal explaining the documentation requirements for unlisted problematic indicators. PDF Fix - Corrected a formatting issue that caused a duplicate "Sampling Point" label to appear in the Hydrology section header on exported PDFs. ### 1.0 — 2026-05-12 No release notes. ## More apps by Jason DeMoss - [Aquod](https://appshunter.io/ios/app/aquod/id6763209904) All apps by Jason DeMoss: https://appshunter.io/developer/1895216165 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-06.*