# Aquod — USACE NCNE Wetland Delineation

> Offline field data entry app for USACE NCNE wetland delineation. (iPhone/iPad app by Jason DeMoss.)

- Source: https://appshunter.io/ios/app/aquod/id6763209904 (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 5 App Store ratings
- Age rating: 4+
- Requires: iOS 15.1 · 33 MB
- Languages: English
- Released: 2026-04-28
- Data updated: 2026-07-04
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/aquod/id6763209904/reviews.md

## What is Aquod?

Aquod is a field data entry app for completing the USACE Northcentral and Northeast Region Wetland Determination Data Form (Version 2.0). Built by a Professional Wetland Scientist for wetland professionals on a budget! It replaces paper forms with a structured digital workflow that works entirely offline - no account, no internet, no data leaving your device.

WHAT AQUOD DOES
- Create projects and add multiple sample plots per site
- Enter field data across four tabs per plot: Hydrology, Vegetation, Soils, and Summary
- Auto-calculates dominance test, prevalence index, and FAC-neutral test from entered vegetation data
- Suggests hydric soil indicators (A1–F22) based on entered horizon data, evaluated against USDA NRCS Field Indicators of Hydric Soils v9.2 (2025)
- Flags warning indicators (A17, A18, S6, S8, F8, F10, F12, F19, F21, F22) that require field confirmation, landform context, or regional restriction verification before use
- Generates a multi-page PDF that mirrors the official USACE NCNE v2.0 form layout, ready to attach to a Joint Permit Application or project report
- Export via AirDrop, Files, email, or any share sheet destination

PLANT DATABASE
Primary: 2,860-species NCNE National Wetland Plant List (USFWS, 2024 edition), with Great Lakes subregion adjustments. Fallback: 37,109-species USDA PLANTS database. Species not on the NCNE NWPL default to UPL.

SOIL INDICATOR ENGINE
Hydric soil indicator suggestions are evaluated against USDA NRCS v9.2 (2025) criteria, covering all applicable A, S, and F indicators for loamy, clayey, sandy, and organic textures. Indicators requiring visual confirmation, landform context, regional restriction, or confirmatory field tests are flagged with a warning rather than auto-checked. Tap any info button for full v9.2 criteria and field notes.

FORM COVERAGE
Full coverage of the NCNE v2.0 data form: project and site header, all hydrology primary and secondary indicators with depth fields, all four vegetation strata, all soil profile fields (up to 12 horizons with matrix and redox data), all standard and problematic hydric indicators, summary of findings, and final wetland determination.

PRIVACY
No backend. No account. No telemetry. All field data is stored locally in SQLite on your device and is never transmitted anywhere. The only data collected from Aquod is standard Apple App Store analytics — crash reports, performance diagnostics, and download counts — handled entirely by Apple's platform. Work completely offline with confidence that your data stays on your device.

SCOPE & DISCLAIMER
This version covers the USACE Northcentral and Northeast Region (NCNE) only. iOS only. For professional use by qualified wetland scientists.

Aquod has not been reviewed, approved, or endorsed by the U.S. Army Corps of Engineers, USDA NRCS, or any other federal or state agency, and no such review or approval has been sought or is implied. Aquod is a field data entry tool and does not replace professional judgment or constitute a formal wetland delineation. Aquod is not responsible or liable for the manner in which information is collected, stored, distributed, relied upon, or otherwise used by the user or any third party after it is exported from the app.

## Key features

- Offline field data entry
- Project and plot management
- Automated dominance and prevalence index calculations
- Hydric soil indicator suggestions
- Generates official USACE PDF reports
- Extensive plant and soil databases
- Data export via share sheet


## Frequently asked questions about Aquod

### What is Aquod used for?

Aquod is a field data entry app designed for completing the USACE Northcentral and Northeast Region Wetland Determination Data Form (Version 2.0). It replaces paper forms with a structured digital workflow for wetland professionals.

### Can I use Aquod offline?

Yes, Aquod works entirely offline. No account or internet connection is required, and your data stays on your device.

### Does Aquod calculate wetland determination tests automatically?

Yes, Aquod auto-calculates the dominance test and prevalence index from entered vegetation data. It also suggests hydric soil indicators based on entered horizon data.

### What kind of reports can Aquod generate?

Aquod generates a multi-page PDF that mirrors the official USACE NCNE v2.0 form layout. This report is ready to be attached to Joint Permit Applications or project reports.

### How large are the plant and soil databases in Aquod?

The app includes the 2,860-species NCNE National Wetland Plant List (USFWS, 2024 edition) and the 37,109-species USDA PLANTS database as a fallback. Hydric soil indicator suggestions are evaluated against USDA NRCS Field Indicators of Hydric Soils v9.2 (2025).

### Is my data secure with Aquod?

Aquod prioritizes privacy with no backend, no account, and no telemetry. All field data is stored locally on your device and is never transmitted anywhere.

### What devices does Aquod support?

Aquod is an iOS-only application and supports iPhone, iPad, and iPod devices.

### How often is Aquod updated?

The latest version of Aquod is 1.0.5, last updated on May 25, 2026. Updates typically address bug fixes and feature enhancements.

## Version history (last 3 releases)

### 1.0.5 — 2026-05-25

What's New in v1.0.5
- Hydric soil indicator references updated to Version 9.3 (2026) throughout the app
- PLSS now auto-fills from the project when creating a new plot - edit individual plots afterward for any exceptions
- New "Apply to All Plots" button on the Edit Project screen - use this to push a corrected Section, Township, and Range value down to all existing plots at once
- Long-press any plot on the project screen to duplicate or delete it - duplicates copy all vegetation, soil, and hydrology data and append "_copy" to the plot ID

### 1.0.4 — 2026-05-11

What's New in v1.0.4
This update improves PDF accuracy, fixes a vegetation calculation error, fixes a UI error, refines a hydric soil indicator recommendation, and adds per-plot Section/Township/Range entry for projects that span multiple PLSS sections.

Per-Plot PLSS - Section, Township, and Range can now be set independently for each sample plot. The field auto-populates from your project-level entry but is fully editable — useful for larger projects crossing multiple sections or townships.

PDF Form Updates - The exported PDF now matches the current ENG FORM 6116-8 (Sep 2024) header layout, including the OMB control number box. The footer, condition row formatting, and summary remarks spacing have also been corrected to more closely match the official form.

Prevalence Index Fix - The Prevalence Index calculation now correctly includes all recorded species regardless of cover percentage, consistent with USACE methodology. Previously, only species with ≥2% cover were included.

Edit Project UI Header - The Edit Project screen accidentally showed the app folder structure at the top of the screen and that has been fixed/removed.

Hydric Soil Engine Refinements - The A5 (Stratified Layers) suggestion now requires at least one thin layer with qualifying dark or organic color/texture before flagging, reducing false positives on mineral profiles.

### 1.0.2 — 2026-04-28

No release notes.

## More apps by Jason DeMoss

- [Aqualf](https://appshunter.io/ios/app/aqualf/id6767928419)

All apps by Jason DeMoss: https://appshunter.io/developer/1895216165

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*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 2026-07-04.*