# Gauge Scout — Real-Time River Flow Forecasts

> Real-time river flow data and forecasts for whitewater paddlers. (iPhone/iPad app by Shawn Sullivan.)

- Source: https://appshunter.io/ios/app/gauge-scout/id6754664063 (this page in markdown: same URL + `.md`)
- Developer: [Shawn Sullivan](https://appshunter.io/developer/1849519524)
- Category: Sports, Weather
- Price: Free with in-app purchases
- Rating: 5.00/5 from 2 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 18.0 · 227 MB
- Languages: English
- Released: 2026-03-15
- Data updated: 2026-08-05
- Monetization: freemium
- User reviews in markdown: https://appshunter.io/ios/app/gauge-scout/id6754664063/reviews.md

## What is Gauge Scout?

Gauge Scout gives whitewater paddlers real-time river flow data, smart alerts, and 48-hour forecasts — everything you need to catch your favorite runs at the right level.

REAL-TIME MONITORING
• Live USGS flow and stage data for rivers across the US
• Flow trend analysis showing rising, falling, stable, or volatile conditions
• 24-hour flow history chart with basin precipitation series (Pro)
• Current weather conditions at each gauge location (Pro)

KNOW WHEN IT'S RUNNABLE
• Set custom flow and stage ranges for each gauge to define your ideal conditions
• Get notified the moment a river enters your runnable window

BUILT FOR PADDLERS
• Add and monitor any USGS gauge in the US
• Favorite your go-to runs for quick access
• Custom gauge names so you see "Demshitz" instead of a gauge number or river name
• Links to American Whitewater for run information

HOME SCREEN WIDGETS
• Glance at your gauges without opening the app
• Small, medium, and large widget sizes
• Shows flow, trend, runnable status, and weather at a glance

GAUGE SCOUT PRO
• Unlock weather conditions, forecasts, and predictions with a monthly subscription
• All purchases through the App Store — cancel anytime

GAUGE WATERSHED WEATHER (Pro)
• Full weather data for gauge location
• Basin distributed precipitation samples for Average/Max/Min precipitation estimates

48-HOUR FLOW PREDICTIONS (Pro)
• Predictive alerts tell you when a gauge is forecast to become runnable
• Machine learning models trained on real hydrological data forecast river flows up to 48 hours out
• Basin-wide precipitation sampling shows rainfall variability across the watershed
• NOAA MRMS radar precipitation overlay on interactive maps
• Next 48-Hr NWS precipitation forecast overlay with tap-to-read values 
• Confidence-gated alerts wait for multiple forecast cycles to agree, reducing false alarms 

iPAD EXPERIENCE (Pro)
• Full-screen interactive map with split-view gauge list and detail panel
• Basin watershed polygons showing drainage area

Apple Watch Companion App (Pro)
• Concise view of gauge status, with complication support

LIVE ACTIVITIES (Pro)
• When a gauge is approaching runnable state (user defined) Dynamic Island alert displays

iCLOUD SYNC
• Your gauge selections and preferences sync across your Apple devices


Gauge Scout uses public data from the U.S. Geological Survey (USGS), NOAA Multi-Radar Multi-Sensor (MRMS) system, and Apple WeatherKit. No account required. No ads. No tracking.

Privacy Policy: https://connriverdesign.github.io/rivergauges-site/privacy.html
Terms of Use: https://connriverdesign.github.io/rivergauges-site/terms.html

## Key features

- Real-time USGS flow data
- 48-hour flow forecasts
- Customizable runnable alerts
- Flow trend analysis
- Home screen widgets
- Pro weather and prediction features

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Flow Prediction Pro | $2.99 | per month |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/gauge-scout/id6754664063/reviews.md

### 5/5 — Favorite Gauge App

*2026-03-22*

This is my favorite app to monitor river levels. Clean and functional interface with good options to customize and set alerts.

## Frequently asked questions about Gauge Scout

### What is Gauge Scout?

Gauge Scout provides whitewater paddlers with real-time river flow data, 48-hour forecasts, and smart alerts to help them find optimal paddling conditions. It uses public data from USGS and NOAA.

### Is Gauge Scout free to use?

The core features of Gauge Scout, including real-time flow data and basic monitoring, are free. Advanced features like weather forecasts and 48-hour predictions are available through a monthly subscription called Flow Prediction Pro.

### What devices does Gauge Scout support?

Gauge Scout is available for iPhone and iPad, offering a seamless experience across your Apple devices with iCloud sync.

### Does Gauge Scout have ads?

No, Gauge Scout is ad-free and does not track user data, ensuring an uninterrupted experience for paddlers.

### How often is Gauge Scout updated?

Gauge Scout was last updated on March 25, 2026, to version 1.10. The app is actively maintained to provide reliable data and features.

### Can I customize alerts in Gauge Scout?

Yes, you can set custom flow and stage ranges for each gauge to define your ideal runnable conditions and receive notifications when a river enters that window.

### What are the benefits of Gauge Scout Pro?

Gauge Scout Pro unlocks detailed weather conditions, basin-wide precipitation estimates, 48-hour flow predictions using machine learning, and an enhanced iPad experience with interactive maps.

### How do I cancel my Gauge Scout Pro subscription?

Subscriptions for Gauge Scout Pro are managed through the App Store, and you can cancel your subscription at any time.

## Version history (last 5 releases)

### 1.16 — 2026-07-31

bug fixes

### 1.15 — 2026-07-17

Bug fixes and prep for iOS 27

### 1.14 — 2026-05-14

bug fixes

### 1.13 — 2026-04-24

Quieter, smarter forecast alerts.                                                                                         
• Alerts now wait for multiple forecasts to agree before buzzing you — fewer false alarms, more trust when they fire.
• New Next 48-Hr Precipitation overlay. Tap any band to read the forecast inches.                                         
• Flow History chart now plots basin rainfall alongside flow — watch the storm land, then the river rise.
• Denser basin sampling so precip numbers reflect the whole watershed, not just the gauge point.                          
• Steadier widgets, Live Activities, and background refresh.

### 1.12 — 2026-04-06

Apple Watch companion app, minor ui refinements, fix some data refresh issues.

---

*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 2026-08-05.*