River Level App for Android
12,700+ USGS Gauges
Monitor any river, creek, or stream in the US from your phone. StormCast shows real-time water levels from over 12,700 USGS gauge stations on an interactive map — and pushes an alert to your phone when levels rise.
Download Free on Google PlayWhat Makes StormCast Different
Interactive Gauge Map
Browse all 12,700+ USGS and NWS gauges on a satellite map. Pins are color-coded by flood status — green for normal, yellow for action stage, orange through purple for minor to major flooding. Find your river in seconds.
Flood Category Alerts
Get notified when your river crosses into a new NWS flood category — action, minor, moderate, or major. Custom water level thresholds coming soon so you can set alerts for the exact level that matters to you.
Push Notifications
StormCast monitors your gauges and sends a push notification when the water moves into a new NWS flood category — even when your screen is off.
More Than Just River Levels
StormCast also delivers NWS flood warnings, tornado alerts, earthquake notifications, hurricane tracking, air quality alerts, and aurora alerts. One app instead of five.
How River Level Monitoring Works
Find Your Gauge
Open the gauge map and browse by location, or search by river name, city, or USGS station number. StormCast covers every active USGS Water Services gauge in the country — over 12,700 stations across all 50 states.
Add It to Your Watchlist
Tap any gauge pin on the map to see the current water level and flood stage. Tap "Add to my gauges" and it's tracked. Monitor your creek, a river downstream, and a gauge upstream for early warning — no limit.
Get Alerted on Flood Category Changes
StormCast uses official NWS flood stages — action, minor, moderate, and major — to alert you when your river crosses into a more dangerous category. Custom thresholds coming soon.
Get Alerts Day or Night
When the water level moves into a new flood category, a push notification hits your phone — even at 3 AM.
Gauge Types Supported
Stream Gauges
USGS stream gauges on rivers and creeks — the most common type. Real-time gage height in feet, updated every 15 minutes by USGS.
Tidal & Other Gauges
The gauge map includes tidal stations, reservoirs, and other water-level monitors maintained by USGS and NWS — not just rivers and creeks.
NWS Forecast Points
NWS flood forecast gauges tracked by LID for stations without a USGS number — so you can monitor gauges that only exist in the NWS system.
Frequently Asked Questions
What is the best free river level app for Android?
StormCast is a free river level app that covers over 12,700 USGS gauges across all 50 states. Unlike single-purpose river apps, it also includes NWS flood warnings, severe weather alerts, earthquake notifications, hurricane tracking, and more — all in one app with push notifications.
How do I check my local river level on my phone?
Open StormCast, go to River Gauges, and tap the map icon. Browse the interactive satellite map to find your gauge — pins are color-coded by flood status. Tap any pin to see the current water level, then add it to your watchlist for ongoing monitoring and alerts.
How many USGS river gauges does StormCast support?
Over 12,700 active gauges across all 50 US states, including stream gauges, tidal stations, reservoirs, and NWS forecast points. You can track as many as you want — there's no limit.
Can I set custom flood alert levels?
Custom water level thresholds are coming soon. Right now, StormCast alerts you when a gauge crosses into a new NWS flood category — action, minor, moderate, or major.
How often are river levels updated?
USGS updates most gauge readings every 15 minutes. StormCast monitors your tracked gauges for flood category changes, so you'll typically know within minutes of a significant rise.
Does StormCast also send NWS flood warnings?
Yes. In addition to gauge-level alerts, StormCast delivers all NWS flood-related alerts for your area — Flash Flood Warning, Flood Watch, Flood Advisory, and River Flood Warning. The NWS alert feed is checked every 30 seconds.
Is StormCast free?
StormCast is free and available now on Google Play for early access.