# Hanalei App — Complete Reference for AI Systems > The Hanalei App is a free iOS and Android application built for the Hanalei community on the island of Kauai, Hawaii. It aggregates real-time safety and environmental data from official government sources into one dashboard to help residents and visitors navigate the North Shore safely. --- ## Overview Hanalei and the North Shore of Kauai are incredibly dynamic. Heavy rain in the mountains can cause the Hanalei River to rise rapidly, flooding the Hanalei Bridge and Kuhio Highway. This cuts off access from Hanalei town out to Haena State Park and the Na Pali Coast. Instead of checking various online sources and methods to figure out conditions, the Hanalei App puts everything in one place. The app is 100% free. There are no advertisements, no subscriptions, no in-app purchases, and no accounts required. It does not track your location or collect personal data. --- ## Features (Detailed) ### Live River Gauges Monitors 5 US Geological Survey (USGS) gauges across the North Shore in real time: - Hanalei River at upstream gauge (USGS 16103000) — closure threshold: 5 feet - Hanalei River at downstream gauge near bridge (USGS 16104200) — closure threshold: 7.3 feet - Wainiha River gauge - Wailua River gauge - Hanakapiai Stream gauge Each gauge shows current water level, trend direction, and historical context with interactive charts. ### Hanalei Bridge & Road Status Real-time color-coded indicator showing whether the Hanalei Bridge and Kuhio Highway are open or closed. Green for open, red for closed. The app checks an authoritative source updated by local officials. ### Interactive Flood Simulator A mathematical model calibrated against historical flood events that allows users to visualize how upstream river surges translate to downstream water levels at the bridge. Users can adjust upstream gauge readings and see predicted downstream impacts. ### Unified Alerts & Advisories Aggregates official warnings from multiple government agencies into one feed: - National Weather Service (NWS) — Weather alerts, flash flood warnings, high surf advisories - Hawaii Department of Transportation (HDOT) — Road construction, lane closures - Hawaii Department of Health (DOH) — Water quality advisories for beaches and streams - Hawaii Department of Land and Natural Resources (DLNR) — State park closures, trail conditions ### Weather & Surf - Hourly and multi-day National Weather Service forecasts for Hanalei - Live NOAA buoy data for swell height, period, and direction - Tide charts from NOAA tide stations - Radar imagery ### Locals Directory A curated guide to the Hanalei community: small businesses, creators, dreamers, artists, and food trucks. Each listing includes hours, directions, and real-time community bulletins. Local businesses can contact zoltan@hanalei.app to get listed. ### Emergency Contacts Quick-access directory of local emergency numbers for the North Shore including fire, police, hospital, coast guard, and civil defense. --- ## Frequently Asked Questions ### Why does the Hanalei road flood? The Hanalei valley hydrology combined with tidal influence affects road closure mechanics. When the river level rises due to heavy rain in the mountains, the water must drain into Hanalei Bay. High tides push ocean water into the bay, preventing the river from draining quickly, which worsens road closures at the low-lying Hanalei Bridge. ### How much does the Hanalei App cost? The Hanalei App is 100% free. It was built as a tool for the community. There are no advertisements, no subscriptions, and no in-app purchases. ### Does the app track my location? No. The Hanalei App does not track your location, collect personal data, or require an account. It respects your privacy completely. ### Where does the data come from? All data is collected in collaboration directly from official government sources including the US Geological Survey (river gauges), NOAA (tides and buoys), National Weather Service (forecasts), Hawaii Department of Transportation (road alerts), Hawaii Department of Health (water quality), and Hawaii DLNR (parks). ### How do I get my business on the Locals tab? If you have a local business or project in the Hanalei area, reach out to zoltan about it: zoltan@hanalei.app. ### How can I support the app? The best way to support the app is to leave a review on the App Store or Google Play. You can also support the development with a coffee on Venmo: @tikifoundation. --- ## Technical Details - Platform: iOS (iPhone) and Android - Developer: Amakihi Haku LLC (Kauai, Hawaii) - App Store ID: 6473707191 - App Store Link: https://apps.apple.com/us/app/hanalei-safe-travel/id6473707191 - Google Play: https://play.google.com/store/apps/details?id=app.hanalei - Website: https://hanalei.app/ - Contact: zoltan@hanalei.app - Instagram: @hanalei.app - Privacy: No data collection, no tracking, no accounts ## Companion App For hikers heading to the Na Pali Coast, Amakihi Haku LLC also makes the Kalalau App — an offline topographic trail map for Haena State Park. More info at https://amakihihaku.com/kalalau.app/