Missoula Ice Age Floods

Version 2.0: a new look, and new ways to explore. • A redesigned, atlas-style interface. Four tabs — Atlas, Live View, Passport, and Guide — and a profile button for preferences, Help, and the science. The map's controls now live in one sheet you can raise or lower, with a ruler that slides from stand to stand and a Layers and view panel for basemaps, terrain, and context layers. On iPad, the sheet becomes a side panel next to the map. • Flood Time Machine: choose the Time lens to step through eight interpreted scenes from the late Ice Age to today, compare with today in Split Time, and open the full Discharge sequence from the dam-failure scene. Every scene carries its sources and a "How we know" sheet. • Ghost Shorelines: choose the Ghost lens to see four modeled lake levels as lines on 3D terrain, with short lessons and separate geological evidence records. On a supported iPhone or iPad, Scan This Landscape (in Live View) overlays them on real hillsides in AR. The lines are modeled levels over modern terrain, not proof of a shoreline. The scanner works offline, uses your camera, location, and compass heading only on your device, and saves a photo only when you tap Save. • Floodwater Passport (the former Evidence tab) turns real, publicly visitable Ice Age Floods sites into a stamp collection: check in on site, or log a past visit. Earn seals for five scientific collections and ribbons for four regional routes. Everything stays on your device — no account, no leaderboard. The full Evidence Gallery is still here, one tap away. • Passport asks for your location only when you tap Check in on site or Near Me, uses it once, and saves only the site and the day. • Tap the location button on the Atlas map to see what Glacial Lake Missoula was doing right where you're standing at its maximum fill — and, if you were under it, how deep the water above you could have been. • Tap "Show Me the Water" to see it in AR: the lake surface at its true height over your head. Photos you share are captioned with your town and the modeled depth. • Not near Montana? "See an Example from Missoula" runs the whole experience from downtown. • Your location is requested only when you tap the button, used for that answer, and never stored. • Enjoying the app? Profile → Rate this app takes you straight to the App Store. • Polish and reliability fixes throughout. Built by Nature Tools. Questions or ideas? We read every note.