# RiverTrax: River Levels & Flow — Water Conditions & Forecast > Live river conditions, alerts, and historical data for outdoor enthusiasts and property owners. (iPhone/iPad app by TraxLabs LLC.) - Source: https://appshunter.io/ios/app/rivertrax-river-levels-and-flow/id6745478475 (this page in markdown: same URL + `.md`) - Developer: [TraxLabs LLC](https://appshunter.io/developer/1812432887) - Category: Weather, Navigation - Price: Free - Rating: 4.60/5 from 5 App Store ratings · 1 written reviews indexed - Age rating: 4+ - Requires: iOS 16.0 · 160 MB - Released: 2026-03-28 - Data updated: 2026-09-06 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/rivertrax-river-levels-and-flow/id6745478475/reviews.md ## What is RiverTrax? Rivers and streams can change by the hour. RiverTrax tells you what yours is doing right now — and what it's about to do. Live readings from thousands of USGS and NOAA gauges — water level, discharge, flood stage, and trend direction. And now, for the vast majority of rivers and creeks that have no gauge, an estimate modeled by NOAA — updated hourly. Just like you don't need a weather station in your backyard to get a forecast, the same is true for rivers. NEW — RIVER STRETCHES Only about 12,000 rivers in the U.S. have a sensor in the water. Everything else — the creek behind your house, the section below the dam, the gorge run — has had nothing. Until now. Tap any river or creek on the map. Name it your way: "Below the dam," "The gorge section." See its estimated flow right now, which way it's trending, and a 10-day outlook. Save it next to your favorite gauges and watch it the same way. Stretch conditions come from NOAA's National Water Model, the federal system that simulates flow on every river and creek in the country. Estimates are always labeled Estimated, attributed to NOAA, and marked with ≈. WE TELL YOU WHEN WE'RE LESS SURE A big river running steadily gets a number. A small creek, or water a storm is pushing around, gets a range — what the model can honestly support there. And when the model's output can't be trusted, RiverTrax says "estimate unavailable" instead of showing you a confident wrong number. FOR ANGLERS When steelhead push in on a fall rain, the question is always the same: has it dropped back into shape yet? Watch discharge and trend on your tributaries, set your fishable range, and let Sweet Spot Alerts tell you the day it comes back down, instead of driving out to look. FOR KAYAKERS & RAFTERS See current discharge and whether it's rising or falling. Set your ideal flow range and let Sweet Spot Alerts tell you when conditions are lining up — before you drive to the put-in. Set a good range on a stretch and see it shaded right on the 10-day chart. FEATURES Every Gauge, Right Now Water level in feet, discharge in CFS, flood stage classification, and trend direction — all updated continuously. Charts You Can Actually Read Observed discharge plotted alongside official NWS forecasts on a clean timeline. Flood stage thresholds — Major, Moderate, Minor, and Action — are marked right on the chart. Tap once for the extended 10-day outlook. Sweet Spot Alerts Set your ideal flow or gauge height range for any station. RiverTrax watches the forecast and notifies you when your window is coming — days in advance, not the morning of. Get Warned Before It Happens Per-station alerts for flood stage, discharge in CFS, or gauge height in feet. RiverTrax monitors in the background and notifies you when thresholds are hit. Your Rivers on Your Home Screen Pin favorite gauges to your iPhone home screen. Live discharge, gauge height, and trend at a glance — no app open required. Follow the River Navigate directly to upstream and downstream gauges from any station, and see every USGS gauge on the same waterway as a stretch. River Journal — Only on RiverTrax Write a note on any gauge or stretch and RiverTrax stamps it with the exact conditions at that moment — discharge, gauge height, and rate of change. Build a personal record of what flows fished or paddled well. How This Works A plain-language explainer built into the app: where every number comes from, what a gauge measures, how a stretch is estimated, and how much to trust each one. Up and Running in Minutes No account required. No setup. Find your water, save your favorites, and go. River data provided by USGS and NOAA. Estimates and extended outlooks are model output, not official forecasts. Not intended for navigation or safety-of-life decisions. Always consult official sources and use good judgment. ## Key features - Live USGS/NOAA gauge readings - Home screen widgets for quick access - Interactive discharge and forecast charts - Customizable 'Sweet Spot' flow alerts - Flood stage and threshold notifications - Upstream/downstream gauge navigation - River journaling with condition stamps ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/rivertrax-river-levels-and-flow/id6745478475/reviews.md ### 4/5 — Great features *2026-09-04* 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! ## Frequently asked questions about RiverTrax ### What is RiverTrax? RiverTrax provides live river conditions from thousands of USGS and NOAA gauges, including water level, discharge, and flood stage. It also offers personalized alerts and a journaling feature to track river events. ### Is RiverTrax free to use? Yes, RiverTrax is completely free to download and use. It does not have any in-app purchases or advertisements, offering a seamless experience for all users. ### What devices does RiverTrax support? RiverTrax is currently available for iPhone. Future support for other devices may be considered based on user demand and development resources. ### How often is RiverTrax updated? RiverTrax was last updated on July 12, 2026, with version 1.4. The app receives regular updates to ensure data accuracy and introduce new features based on user feedback. ### What age rating does RiverTrax have? RiverTrax has an age rating of 4+. This indicates that the content is generally suitable for all ages, with no mature themes or potentially concerning material. ### Can I set alerts for specific river conditions with RiverTrax? Yes, RiverTrax allows you to set customizable alerts for flood stages, specific discharge (CFS), or gauge height (feet). You can also set 'Sweet Spot' alerts for your ideal flow ranges. ### Does RiverTrax require an account to use? No, RiverTrax does not require an account to use. You can find your river, save favorites, and start using its features immediately upon downloading the app. ### What kind of data does RiverTrax display? RiverTrax displays live readings such as water level in feet, discharge in CFS, flood stage classification, and trend direction. It also shows official NWS forecasts and historical data through its charting and journaling features. ## Version history (last 5 releases) ### 1.6 — 2026-09-05 This update is housekeeping. But if you're new here — or haven't opened RiverTrax since early summer — here's what landed recently. RIVER STRETCHES — conditions for the water that has no gauge Only about 12,000 rivers in the U.S. have a sensor in the water. The creek behind your house, the section below the dam, the gorge run — nothing. Now you can tap any river or creek on the map, name it your way, and save it next to your favorite gauges. You get its estimated flow, trend, and 10-day outlook, modeled by NOAA's National Water Model and updated hourly. • Save and name any stretch — "Below the dam," "The gorge section" • Estimated flow, trend direction, and a 10-day outlook on water with no sensor • Honest uncertainty: a number where the model is solid, a range where it isn't, and "estimate unavailable" rather than a confident wrong answer • Pin a reference gauge to translate the estimate into the height that gauge would read — with its real measurement right beside it • Set a good range and see it shaded on the 10-day chart • See every USGS gauge on the same waterway from any stretch • Journal entries on stretches, condition-stamped automatically • Rivers turn blue on the map up close — tap any of them, gauged or not HOW THIS WORKS A plain-language explainer covering where every number comes from, what a gauge actually measures, how a stretch is estimated, and how much to trust each one. In About, and from any gauge or stretch. Notice something off with a gauge reading or a forecast? Let me know at traxlabsllc.com/rivertrax. RiverTrax is built by one person, and every report gets read. ### 1.5 — 2026-09-01 RIVER STRETCHES — conditions for the water that has no gauge Tap any river or creek on the map, name it your way, and save it next to your favorite gauges. RiverTrax shows its estimated flow, trend, and 10-day outlook, modeled by NOAA's National Water Model and updated hourly. • Save and name any stretch of river — "Below the dam," "The gorge section" • Estimated flow, trend direction, and a 10-day outlook on water with no sensor • Honest uncertainty: a number where the model is solid, a range where it isn't, and "estimate unavailable" rather than a confident wrong answer • Pin a reference gauge to translate the estimate into the height that gauge would read — with its real measurement right beside it • Set a good range and see it shaded on the 10-day chart • See every USGS gauge on the same waterway from any stretch • Journal entries on stretches, condition-stamped automatically HOW THIS WORKS A new plain-language explainer covering where every number comes from, what a gauge actually measures, how a stretch is estimated, and how much to trust each one. Reachable from About and from any gauge or stretch. ALSO IN THIS RELEASE • Rivers on the map now turn blue up close — tap any of them, gauged or not • Find a river in search and land on the map with it already highlighted • Reorder your favorites — drag them into the order you actually check them • Clearer rate-of-change indicators on gauge and stretch detail • More reliable data loading and refresh ### 1.4 — 2026-07-12 What's New in Version 1.4 This update makes finding and tracking your rivers faster and more reliable. Better Search Station search is fixed and more accurate — search by state, river, or place name and get the gauge you're looking for. Refreshed Station Data We rebuilt our station database from the latest NWS/USGS sources, adding new gauges and updating metadata across the country. The app is also noticeably smaller and quicker to install. Redesigned Journal Logging a trip or observation is cleaner now: a single focused entry screen, a new tap-to-rate star control, and visible tags so you can organize your notes your way. We also fixed a few rough edges, including an occasional "-0.00" reading and a bug that could overwrite a note after editing. Fixes & Polish Fixed the alert configuration button on the station screen Improved the shareable station card General stability and performance improvements As always, thanks for using RiverTrax. Send feedback anytime — we read all of it. ### 1.3 — 2026-06-23 - Widget improvements for faster, more reliable gauge updates - Performance enhancements across the app for smoother navigation - Bug fixes and stability improvements ### 1.2 — 2026-06-06 Home Screen Widgets Pin your favorite rivers to your iPhone home screen. See live discharge, gauge height, and trend at a glance — no app open required. Tap any widget to jump straight to full details. Extended 10-Day Outlook Toggle the chart between the official NWS forecast and an extended 10-day outlook when you're planning further ahead. Official data is always clearly labeled. Smarter Alerts Flood and Sweet Spot alerts now keep working when NWS hasn't issued an official forecast, falling back to extended outlook data so you stay informed during quiet weather. Estimated alerts are clearly labeled. Refreshed Welcome A streamlined onboarding flow helps new users get to their favorite rivers faster. Plus alert reliability fixes, smoother widget refresh, and general polish. ## Related topics [river app- river levels](https://appshunter.io/ios/topics/river-app-river-levels) · [usgs river data](https://appshunter.io/ios/topics/usgs-river-data) --- *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 2026-09-06.*