RiverTrax: River Levels & Flow

RiverTrax: River Levels & Flow

Water Conditions & Forecast

7 ratings
2 reviews
Free

Details

Released
March 28, 2026
Updated
November 3, 2026
RiverTrax: River Levels & Flow screenshot #1 for iPhone
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About

This app provides real-time and forecasted water conditions for rivers and streams, including flow, discharge, and flood stages. It covers official gauges, live-only sensors, and modeled estimates for un-gauged waterways, offering detailed charts and alerts for anglers and paddlers.

✓Real-time river level and discharge data
✓Official NWS forecasts and modeled estimates
✓Flood stage thresholds marked on charts
✓Water clarity and temperature reporting
✓Customizable alerts for ideal flow ranges
✓River camera access and timelapses
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What's New in RiverTrax

1.10

November 3, 2026

This update brings together everything since 1.8. • River cameras: the latest photo and a timelapse from USGS river cameras at 700+ gauges, right on the gauge page. • Your range: set the flow or level you like on any gauge. It's shaded on the chart, shown on your favorites, and RiverTrax tells you when the forecast moves in or out of it. • Water clarity: on gauges with a turbidity sensor, see the water in plain words (Clear, Stained, Muddy, Blown out), with a clarity chart and alerts. Measured now, never forecast. • River journal, reworked: add photos, rate the day from Poor to Epic, share an entry as a card, and browse everything by month. • Flood of record: see a gauge's record flow, plus a "highest since…" note when the river beats recent years. • Map: new locate button and legend, and Search this area is always available. • Widgets now show the same reading as the app, with the time it was taken. • Under the hood: moved to USGS's new data service ahead of the old one's retirement.

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User reviews

Simply the best

No other app combines this many sites in such an easy to use and view format.

Response from developer

Thank you — that's great to hear. An update just went live (1.10) that adds river cameras at 700+ gauges, water clarity on the gauges that have a turbidity sensor, and the ability to set your own good-flow range so it's shaded right on the chart. Thanks again for taking the time to review.

Great features

Great USGS water data app, tons of helpful features. The river journal, multiple types of flow alerts, instantly being able to jump up or down river from within a gauge are all so helpful and valuable. As a fishing guide, avid angler, and boater the only thing it is severely missing is water temps. Please add water temps and graphs where available ASAP!
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Response from developer

Thanks for using the app and taking the time to review, I really appreciate it. I'm adding water temps for gages for the next release, I'm testing right now. Current temp will be on the favorite card right below flow and gage height so it's easy to find and also on the detail page along with a chart showing last 5 days of water temp history. Hopefully this works for you once it's released. Thanks again for the feedback.

Developer apps

FAQ

What is RiverTrax?

RiverTrax provides real-time and forecasted water conditions for rivers and streams. It shows live levels, discharge, flood stages, and trends, covering official gauges, live-only sensors, and modeled estimates.

Does RiverTrax have ads?

No, RiverTrax is ad-free, allowing users to access all its features without interruption from advertisements.

What devices does RiverTrax support?

RiverTrax is currently supported on iPhone devices.

How often is RiverTrax updated?

The app was last updated on November 3, 2026, with version 1.10. Updates typically include new features and performance improvements.

What is the age rating for RiverTrax?

RiverTrax has an age rating of 4+, making it suitable for a wide range of users.

How does RiverTrax handle uncertainty in its data?

When data is less certain, RiverTrax provides a range instead of a single number and will explicitly state 'estimate unavailable' if the model's output cannot be trusted.

Can I set alerts for specific water conditions in RiverTrax?

Yes, you can set 'Sweet Spot Alerts' for your ideal flow or gauge height range, and RiverTrax will notify you when conditions are expected to align.

What kind of information is available for un-gauged creeks in RiverTrax?

For un-gauged waterways, RiverTrax provides estimates modeled by NOAA, updated hourly, including estimated flow and trend, and water temperature where reported.