# FloodRoute — Real-time road flooding risks > Real-time road flooding risk predictions for coastal communities. (iPhone/iPad app by MARC ERFANI HOAG.) - Source: https://appshunter.io/ios/app/floodroute/id6757653475 (this page in markdown: same URL + `.md`) - Developer: [MARC ERFANI HOAG](https://appshunter.io/developer/1868106492) - Category: Navigation, Weather - Price: Free with in-app purchases - Rating: 5.00/5 from 12 App Store ratings · 2 written reviews indexed - Age rating: 4+ - Requires: iOS 18.5 · 47 MB - Languages: English - Released: 2026-01-16 - Data updated: 2026-06-07 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/floodroute/id6757653475/reviews.md ## What is FloodRoute? AS FEATURED IN THE ARK NEWS (Jan 28, 2026) in Tiburon, CA, FloodRoute shows which roads may flood during high tides, before you drive into trouble. Using NOAA tide data, OpenWeatherMap barometric pressure, Open-Meteo rainfall data, road elevation mapping, FEMA flood zone data, historical news records, and crowdsourced user-submitted verifications, FloodRoute provides realtime estimations of flood-prone streets -- and "what if" scenarios -- so you can plan safer routes in coastal communities. AVAILABLE IN 6 REGIONS: • Boston, MA • Marin County, CA • Miami, FL • New York City, NY • San Francisco, CA • Tampa, FL My first iOS app, FloodRoute was inspired by Nextdoor neighbors in my home of Marin County. What started as a simple idea became a full-fledged app when I racked up nearly 200 requests within 24 hours of sharing my idea. FEATURES • Rainfall effect: Predictions factor in recent rainfall (Marin County, CA only) • High tide countdown: Live countdown timer to the next notable high tide • Flood alerts: Get notified before dangerous high tides • Report Conditions: Drop a pin to report road conditions. Help improve predictions for everyone. • Warn Friends: Easily share a screenshot of flooded roads with family and neighbors • Real-world validated: Calibrated against historical king tide flooding and augmented by user-submitted reports. • Visual flood risk indicator at a glance • 7-day tide forecast • Real-time NOAA tide predictions • See current, high tide, or interactive "what if" flood scenarios • Interactive map showing at-risk roads • No account or login required HOW IT WORKS FloodRoute combines live NOAA tide data with high-resolution USGS elevation data to predict which roads — or portions of roads — are at risk of flooding. Flood zones are calibrated against documented king tides and historical flood records for real-world accuracy, and then augmented by user-submitted reports. DATA SOURCES • NOAA CO-OPS: Real-time tide predictions • Open-Meteo: Precipitation/rainfall data • OpenWeatherMap barometric pressure • USGS: High-resolution road elevation data (NAVD88) • OpenStreetMap: Road geometry • FEMA: National Flood Hazard Layer zones • Historical Records: Documented king tide flooding events used for calibration • User reports: Augmented by crowdsourced user feedback SUBSCRIPTION Try FloodRoute free for 3 days. Continue with FloodRoute Pro for $4.99/month or for 50% off at just $29.99/year. Cancel anytime. IMPORTANT SAFETY NOTICE FloodRoute provides estimates only and is not a substitute for official emergency alerts. Road conditions can change rapidly. Never drive through flooded roads — turn around, don't drown. Questions or feedback? Contact support@floodroute.com Follow @FloodRouteApp at https://x.com/floodrouteapp Terms of Service: https://floodroute.com/#tos Privacy Policy: https://floodroute.com/#privacy ## Key features - Real-time flood risk indicator - High tide countdown timer - Flood alerts and notifications - Interactive map of at-risk roads - "What if" flood scenario planning - User-submitted condition reports - 7-day tide forecast ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Monthly | $4.99 | per month | | Yearly | $29.99 | per year | ## Recent user reviews (2 of 2) All indexed reviews: https://appshunter.io/ios/app/floodroute/id6757653475/reviews.md ### 5/5 — Just what I needed *2026-01-17* Great app that will help me navigate the flood days. Caught me too many times. **Developer response:** Thanks so much for the kind words and supporting my first ever iOS app! ### 5/5 — Much Needed & Appreciated! *2026-01-17* After the recent floods in Marin, I know I am quite happy to see this app having been developed, and I know many others will be as well. Looking forward to the expansion out to Oakland where I also spend a lot of time. So far, so good with the functionality. Offers a lot of helpful information in one place, and we will really get to test it out fully, next time the king tides do their thing…. **Developer response:** Hi there, thanks so much for the kind words and supporting my first ever iOS app! ## Frequently asked questions about FloodRoute ### What regions does FloodRoute cover? FloodRoute is currently available in Boston, MA; Marin County, CA; Miami, FL; New York City, NY; San Francisco, CA; and Tampa, FL. The app uses data specific to these coastal areas to provide accurate flood risk predictions. ### How accurate are FloodRoute's predictions? FloodRoute combines NOAA tide data, road elevation mapping, FEMA flood zone data, and user-submitted verifications for real-time estimations. It is calibrated against historical king tide flooding events for enhanced accuracy. ### Can I use FloodRoute offline? The app relies on real-time data feeds from sources like NOAA and weather services, so an active internet connection is required for the most up-to-date flood risk information and predictions. ### What is the cost of FloodRoute Pro? FloodRoute offers a 3-day free trial. After the trial, FloodRoute Pro costs $4.99 per month or $29.99 per year, offering a 50% discount for the annual subscription. You can cancel your subscription at any time. ### How often is FloodRoute updated? FloodRoute was last updated on March 20, 2026, with version 1.4.1. The developer frequently updates the app to incorporate new data sources and improve prediction accuracy based on user feedback and real-world conditions. ### Is FloodRoute safe for all ages? FloodRoute is rated for ages 4 and up, making it suitable for most users. However, it's important to remember that the app provides estimates and should not replace official emergency alerts. ### Can I report road conditions in FloodRoute? Yes, FloodRoute allows users to report road conditions by dropping a pin on the map. This crowdsourced data helps improve the accuracy of future predictions for the entire community. ### Does FloodRoute have ads? No, FloodRoute does not contain advertisements. The app is free to download and use, with an optional subscription for advanced features. ## Version history (last 5 releases) ### 1.4.2 — 2026-04-14 Rainfall Effect (Marin County, CA only) Predictions now factor in recent rainfall. Auto-detects conditions or use the slider to simulate scenarios. High Tide Countdown Live countdown timer to the next notable high tide. Plus everything from previous updates: Smarter Predictions Flood predictions now calibrated with real king tide observations and atmospheric pressure data. Barometric Pressure Low pressure storms can raise water levels — now factored into predictions automatically. Commute Alerts Daily flood check at 6 AM and 3 PM. Flood Alerts Get notified before dangerous high tides. Report Conditions Drop a pin to report road conditions. Help improve predictions for everyone. Warn Friends Share flood warnings with one tap. Map screenshot included. ### 1.4.1 — 2026-03-20 Rainfall Effect (Marin County, CA only) Predictions now factor in recent rainfall. Auto-detects conditions or use the slider to simulate scenarios. High Tide Countdown Live countdown timer to the next notable high tide. Plus everything from previous updates: Smarter Predictions Flood predictions now calibrated with real king tide observations and atmospheric pressure data. Barometric Pressure Low pressure storms can raise water levels — now factored into predictions automatically. Commute Alerts Daily flood check at 6 AM and 3 PM. Flood Alerts Get notified before dangerous high tides. Report Conditions Drop a pin to report road conditions. Help improve predictions for everyone. Warn Friends Share flood warnings with one tap. Map screenshot included. ### 1.4 — 2026-02-18 Rainfall Effect (Marin County, CA only) Predictions now factor in recent rainfall. Auto-detects conditions or use the slider to simulate scenarios. High Tide Countdown Live countdown timer to the next notable high tide. Plus everything from previous updates: Smarter Predictions Flood predictions now calibrated with real king tide observations and atmospheric pressure data. Barometric Pressure Low pressure storms can raise water levels — now factored into predictions automatically. Commute Alerts Daily flood check at 6 AM and 3 PM. Flood Alerts Get notified before dangerous high tides. Report Conditions Drop a pin to report road conditions. Help improve predictions for everyone. Warn Friends Share flood warnings with one tap. Map screenshot included. ### 1.3.3 — 2026-02-02 Smarter Predictions Flood predictions now calibrated with real king tide observations and atmospheric pressure data. Barometric Pressure Low pressure storms can raise water levels — now factored into predictions automatically. Plus a few minor improvements, and everything from 1.3.2 and before: iCloud Sync Settings sync automatically across all your devices. Commute Alerts Daily flood check at 6 AM and 3 PM. Flood Alerts Get notified before dangerous high tides. Report Conditions Drop a pin to report road conditions. Help improve predictions for everyone. Warn Friends Share flood warnings with one tap. Map screenshot included. Smoother Maps Faster rendering with improved flood zone visualization. ### 1.3.2 — 2026-02-01 Added iCloud sync for your local data in case you have to delete/re-install the app or get a new phone or sync across multiple devices Added Commute Alert notifications Also, a few minor improvements and updates, plus everything from 1.3.1 and before: Report Conditions Drop a pin to report road conditions. Help improve predictions for everyone. Warn Friends Tap "Alert Friends" to share a screenshot of flooded roads with family and neighbors, and spread the word before king tide flooding hits. 5 New Regions Flood predictions now available for Boston, Miami, New York City, San Francisco, and Tampa Bay Flood Alerts Get notified before dangerous high tides. Choose which regions to monitor in Settings. Real-World Validation Flood zones calibrated against documented king tides and historical flood records. Performance Improvements Faster map rendering with smoother scrolling, plus subtle haptic feedback throughout the app. Dark Mode Icon A cute new icon for Dark Mode! ## More apps by MARC ERFANI HOAG - [Saccade: A/B Test-by-Eye](https://appshunter.io/ios/app/saccade-ab-test-by-eye/id6760804458) All apps by MARC ERFANI HOAG: https://appshunter.io/developer/1868106492 ## Related topics [floodroute](https://appshunter.io/ios/topics/floodroute) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-07.*