Real-time water data

Know Your Waters
Before You Go

Check real-time conditions on any river, lake, or tidal station in the US. See water levels, flow, weather, and access points — then estimate your float time before you leave the house.

15,000+
USGS Gauges
127,500+
Rivers & Lakes
43,900+
Access Sites
5,900
Whitewater Runs

Float Time Estimates

Pick two access points and get a trip duration estimate using current flow, distance, and wind.

15,000+ USGS Gauges

Live flow, stage, water temp, and flood risk — updated in real time from USGS and NOAA.

43,900+ Access Sites

Boat ramps, kayak launches, and river access points with coordinates and amenities.

Trusted Sources

Built on the best public water data in the US

How It Works

From segment to plan in seconds

Pick a Segment

Select your put-in and take-out access sites to lock in river miles.

See the Conditions

We combine gauges, wind, and tide data for a complete snapshot.

Plan Confidently

Get a float-time estimate with AI notes on pacing and safety.

Explore Major Rivers

Discover America's great waterways

24-Hour Trends

See if water levels are rising, falling, or steady. Flow, stage, and temperature tracked over the last 24 hours.

Threshold Alerts

Set a water level and get an email or text when your river crosses it. No more guessing.

AI Condition Reports

Daily AI-generated briefings that summarize conditions, flag hazards, and suggest whether it's a good day to go.

Built For People Who Check Conditions Before They Go

Fishing

Check flow, stage, and water temp on your river before driving out. See if levels are rising or falling and whether flood stage is a concern.

Paddling & Floating

Pick your put-in and take-out, see the distance, and get a float time estimate based on current flow and wind. Know what you're getting into.

Coastal & Tidal

Tide predictions, water temperature, and wave conditions for 3,400+ NOAA stations. Plan around the tides, not against them.

Know Before You Go

Monitor your spots and get email or SMS alerts when water levels hit your thresholds

Free plan includes 1 location • No credit card required