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HydraAtlas

HydraAtlas

Flood Awareness and Safety

2 ratings
1 review
🔧 Utilities
☀️ Weather
Free

Details

  • Released
  • Updated
  • September 9, 2025
  • October 11, 2025

Features

Developer

Kevin Bullock
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HydraAtlas screenshot #1 for iPhone
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About

This app provides detailed flood risk information for any US location using official FEMA data. It offers real-time updates on stream gauges, weather alerts, and radar, helping users make informed decisions about potential flood hazards.

✓FEMA flood zone mapping
✓USGS stream gauge readings
✓National Weather Service alerts
✓Interactive weather radar
✓Save monitored locations
✓Emergency preparedness info
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What's New in HydraAtlas

1.07

October 11, 2025

Bug fix to remove duplicate notifications, sorry about that! (we just want you to be safe)

User reviews

Most RecentHighest RatedLowest Rated

5-Stars! New App! 🤩

Hydra Atlas gives me real peace of mind. The flood risk maps are clear, easy to read, and update quickly. I feel so much more prepared knowing I can check my area anytime. It’s simple, accurate, and exactly what I needed for safety.
My favorite features, so far, are the weather alerts, the weather layers and the legends that teach about the different flood zones and the Annual Flood Return Period. Looking forward to using this app as it evolves!
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FAQ

What is HydraAtlas?

HydraAtlas is a utility app designed to inform users about flood risks using official US government data, including FEMA flood zones and USGS stream gauges.

Is HydraAtlas available outside the United States?

Currently, HydraAtlas primarily uses US government open data, making it most applicable within the United States for now.

What kind of data does HydraAtlas provide?

HydraAtlas provides real-time data from official sources such as FEMA flood zones, USGS stream gauges, rain gauges, live weather, and National Weather Service alerts.

Can I save locations in HydraAtlas?

Yes, HydraAtlas allows you to save important locations for ongoing monitoring of flood risk and weather conditions.

What is the age rating for HydraAtlas?

HydraAtlas has an age rating of 4+, making it suitable for a wide range of users.

How often is HydraAtlas updated?

The latest version of HydraAtlas is 1.07, and it was last updated on October 11, 2025, indicating regular maintenance and updates.

What devices support HydraAtlas?

HydraAtlas is supported on iPhones and iPads, leveraging its mapping and alert features across these Apple devices.

Does HydraAtlas have ads?

No, HydraAtlas does not contain advertisements, providing an uninterrupted user experience.