Water level monitoring & flood alerts

Know the water level. Always a step ahead.

Hydrophant tracks German river gauges in real time and alerts you when levels cross your threshold, so you can stay safe or pick the perfect moment on the water.

Free to start, no credit card required

Find your gauge

Jump straight to live data for any station.

River / waterbody

Gauging station

or explore the full map

3,000+

Gauging stations

1,300+

Rivers & waterbodies

10+

Official data sources

24/7

Real-time monitoring

Trusted data

Data from official gauging stations

We aggregate measurements directly from Germany's official hydrological authorities, the same sources used for national flood management.

LANUV NRW

Pegelonline (WSV)

HND Bayern

and more

Why Hydrophant

Stop checking. Start knowing.

Checking the gauge by hand only ever shows you a snapshot. Hydrophant turns that into continuous peace of mind.

Checking by hand

You only see the level when you remember to look
A rise overnight can go unnoticed
No warning before it turns critical

With Hydrophant

The gauge is watched for you, around the clock
Alerted the moment your threshold is crossed
Time to act before the water reaches you

How it works

Three steps to peace of mind

1Find your gauge

Search Germany's rivers and pick the gauging station closest to you.

2Set your threshold

Choose the water level that matters to you and how you want to be warned.

3Get alerted in time

We notify you the moment the level is crossed, day or night.

Features

Built around alerts, backed by the full picture

Alerting is what Hydrophant does best. But you also get real-time data, downloadable history and a nationwide map.

Core feature

Custom alerts

Set a threshold for any gauge and Hydrophant watches it around the clock, warning you the moment the level is crossed so you can act in time.

Thresholds set per gauge
Automatic monitoring, 24/7
Up to 5 alerts on Premium

Set up an alert

Real-time levels

Live measurements, refreshed as often as the official sensors report.

Historical trends

Interactive charts of how levels developed over hours and days.

Download the data

Export measurements for your own records and analysis.

Nationwide map

Browse gauging stations across Germany on one map.

Multiple gauges

Keep every river that matters to you in one place.

Official sources

Data from public hydrological authorities you can trust.

Who it is for

Built for everyone near the water

Homeowners near rivers

Protect your property. Get warned before the water reaches you.

Anglers & paddlers

Plan trips around the right conditions and stay safe on the water.

Farmers & landowners

Keep fields, livestock and equipment safe from rising water.

Communities & operators

Keep an eye on the local gauges that matter for your area.

Pricing

Start free. Upgrade when you need alerts.

Viewing real-time levels, the gauge map and trends is free. Premium adds continuous alerting for the gauges you care about.

14-day trial

Free

Plan lengthAccess for 14 days

Best forTrying out Premium features

Start free trial

Monthly subscription

4.90 EUR/ month

Plan lengthMonthly, cancel anytime

Best forMaximum flexibility

Start subscription

Yearly subscription Most popular

39.90 EUR/ year

Over 30% cheaper than monthly

Plan length12 months, cancel anytime

Best forYear-round safety at the best price

Start yearly subscription

Enterprise

Need API access or live data feeds?

Unified API access and real-time data messaging for products, teams and integrations. Tell us your use case and we'll get you set up.

FAQ

Frequently asked questions

Directly from official German hydrological authorities such as LANUV NRW, Pegelonline (WSV) and HND Bayern, and more across most German states.

Stay ahead of the next high water

Set up your first gauge alert in minutes.

Set up an alert Browse all gauges