USGS WaterFlow
Available on the App Store
WaterFlow turns every USGS streamgauge in the country into a pocket-sized field guide for moving water.
Real-time flow rates in cubic feet per second, gauge height, water temperature and the local NOAA forecast, drawn straight from the official sources.
- Price
- Free
- Category
- Weather
- Devices
- iPhone and iPad
- Requires
- iOS 17 or later
Screenshots
Home Screen widget 
Favorites 
Station Detail 
Station Detail, dark mode 
By State 
Map
Features
- Home Screen widget
Live flows for the gauges you watch, each with a seven-day sparkline. Small, Medium and Large sizes, plus Lock Screen widgets.
- Map
Every USGS gauge in the country on one map.
- Station Detail
Flow in cubic feet per second, gauge height, water temperature and the NOAA forecast, with charts for the last seven days.
- Flow Alerts
Set a low or high flow threshold on any gauge and get a notification when the river crosses it.
More features
- Map
Every USGS gauge in the country on one map.
- Flow Alerts
Set a low or high flow threshold on any gauge and get a notification when the river crosses it.
- By State
Pick a state and see every active gauge in it, sorted by flow, name or distance.
- Nearby
Find every gauge within a radius you choose.
- Favorites
Save the gauges you watch most, each with its current flow and the last seven days.
WaterFlow doesn't track you. No analytics, no advertising, no third-party SDKs.
Data from the U.S. Geological Survey and the National Weather Service. WaterFlow is not affiliated with either agency.